US3174000A - Arc resistant switch - Google Patents
Arc resistant switch Download PDFInfo
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- US3174000A US3174000A US224780A US22478062A US3174000A US 3174000 A US3174000 A US 3174000A US 224780 A US224780 A US 224780A US 22478062 A US22478062 A US 22478062A US 3174000 A US3174000 A US 3174000A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
Definitions
- This invention relates to an electric switch, and more particularly to a high power capacity electric switch.
- the primary object of this invention is to provide a new and useful electrical switch.
- An important object is provision of a new and useful electric switch for controlling arcing during operation of the switch.
- a more specific object is provision of a new and useful high power capacity electric switch having a high are resistant contact electrically connected with a high conductive contact, and mounted in operative assembly in a simple and practical manner.
- FIGURE 1 is a facial view of an embodiment of an electric switch incorporating features of the invention
- FIGURE 2 is an enlarged, fragmentary sectional view taken generally along the line 22 of FIGURE 1;
- FIGURE 3 is a fragmentary sectional view taken generally along the line 33 of FIGURE 2;
- FIGURE 4 is a fragmentary sectional view taken generally along the line 4-4 of FIGURE 2;
- FIGURE 5 is a side view of another embodiment of an electric switch incorporating features of the invention.
- FIGURE 6 is a sectional view taken generally along the line 66 FIGURE 5.
- the invention is, in brief, directed to a practical solution to the problem of contact arcing during operation of high power capacity electric switches. This problem is solved by providing cooperating contacts in a switch including a high are resistant contact electrically connected with a high conductive contact in such a manner as to provide a simple and durable commercially practical switch assembly.
- a rotary electric switch has a threaded hub 10 for mounting the switch in a suitably apertured panel, or the like.
- a rotary switch operating shaft 11 is journalled in hub 10 and mounts a switch rotor 12 received within a central opening 13 of a switch stator 14.
- a ball detent-type indexing assembly 15 3,1743% Patented Mar. 16, 1965 "ice includes a plate 16 fixedly secured to hub 10 in any suitable manner as by a rolled connection 17, and plate 16 fixedly secured to stator 14 in any suitable manner as by diametrically opposed bolts 18 which may be telescoped through sleeves (not shown) between plate 16 and stator 14.
- Indexing assembly 15 also includes a small plate 19 telescoped on shaft 11 and held against axial movement along the shaft toward rotor 12 by staked shaft portions 20, thus holding shaft 11 against movement through hub 10 in a direction to the right as viewed in FIGURE 2.
- a C-Wash 21 received in a circumferential groove in shaft 11 prevents movement of the shaft in an opposite direction.
- Stator 14 has a non-conductive body 25 of any suitable material, for example, a ceramic, and this body has opposite parallel faces 26 and 27, with resilient jaw contacts 28a and 2817 on opposite faces 26 and 27, respectively, of the stator and connected by electrically conductive fasteners such as rivets 29 to define pairs of contacts.
- the resilient jaws of the pair of contacts 28a and 28b are positioned in a path for engagement with contacts 35 and 36 on opposite parallel faces 37 and 38, respectively, of a non-conductive body 39 of rotor 12.
- Contact 35 is part of a contact ring 40 extending slightly outwardly from rotor body face 37 so that it may be received between resilient jaws of a stator contact 41.
- rotor contact 36 is part of a contact ring 42 on rotor face 38 and extends slightly outwardly from rotor body 39 and is received between resilient jaws of a stator contact 43.
- Rings 40 and 42 are mounted on opposite faces of rotor body 39 and are electrically connected with each other by means of a rivet 44 extending through the rings and rotor body.
- Stator contacts 41 and 43 are mounted on opposite faces of stator body 25 and electrically connected with each other as by rivets 45, in a manner similar to the connection of pairs of contacts 28.
- contacts 28b, and rotor ring 42 and including its contact 36 all of the other contact structures previously described are preferably of a high electrically conductive material thus providing a low contact resistance for carrying normal electrical loads, and a suitable material for this purpose is com silver.
- Contacts 28b and rotor ring 42 are of a high arc resistant material such as silver-cadmium alloy or silver-nickel alloy, and contact 36 is wider around a circumferential path of movement about the axis of shaft 11 than is rotor contact 35, so that as pairs of contacts 28a and 281) are engaged by the rotor contacts, rotor contact 36 engages its.
- cooperating contact 28b of the pair before high conductance rotor contact 35 engages its stator contact 2801.
- a circuit is completed from contact 43 through contact 36 to contact 28b of the pair of contacts before a circuit is completed from stator contact 41 through contact 35 to the other contact 28a of the pair of contacts, preventing arcing between cooperating normal load carrying contacts 28a and 35 of high current conductive material, upon closing of cooperating contacts.
- high conductance rotor contact 35 disengages its cooperating stator contact 2dr: before high are resistant rotor contact 36 disengages its rotor contact 28]), again preventing arcing which would damage the high conductive contacts.
- Contacts 28b and rotor ring 42 may be made of high conductive material, in which event they absorb arcing until the contact 36 is burned to the same width as contact 35.
- a slide-type switch wherein a non-conductive base 50 carries a series of pairs of contacts 51a and 51b which are connected together.
- Contacts 51a and 51b may both be of high conductive material in order to facilitate economic manufacture of the switch, or contacts 51a may preferably be of high arc resistant material, and the same consideration applies to the foregoing embodiment.
- the contacts of a each pair are opposed to each other along opposite edge portions of the base, and secured to the base in any suitable manner.
- a slide 52 has a relatively short high conductive contact 53 movable in a path for engaging contacts 51a along one edge of base 50, and a relatively long contact 54, longer than contact 53 and mounted for movement on slide 52 to engage the contacts 51b along the other edge of base 50.
- Contact 54 may be made of high conductive material but is preferably of high are resistant material for the same reasons as previously discussed. Contacts 53 and 54 are connected to each other in a suitable manner as by connectors 55 and are mounted on the slide as by tabs 56 so that high are resistant contact 54 engages its cooperating contact 51b of the respective pair of contacts prior to engagement of high conductive conductive contact 53 with its cooperating contact 51a of the respective pair. As previously described, high are resistant contact 54 disengages its cooperating contact 51b of the respective pair of contacts after high conductive contact 53 has disengaged its cooperating contact 51a of the respective pair of contacts.
- a non-conductive base for controlling arcing during operation of the switch: a non-conductive base; a plurality of pairs of contacts disposed in a path; electrical conductive means, one connected with the contacts of each pair of contacts; means mounting the pairs of contacts on said base; a non-conductive member movable along said path, with a high conductive contact and a high are resistant contact mounted on said member, said high arc resistant contact being longer along said path than said high conductive contact, and electrical conductive means connected with the member contacts whereby the member contacts selectively engage said pairs of contacts upon movement of said member along said path with said high conductive contact engaging one contact of the selected pair of contacts and said high are resistant contact engaging the other contact of the selected pair prior to said engagement of said high conductive contact, and with said high are resistant contact disengaging said other contact after disengagement of said high conductive contact from said one contact of the selected pair; and means mounting said member for movement along said path and said member contacts in said path.
- a base for controlling arcing during operation of the switch: a base; a pair of contacts mounted on said base and electrically connected with each other, one of said contacts being a high conductive contact and the other contact being a high are resistant contact; a member movable in a given path with respect to said base and in consistent spaced relationship with respect to said base; a high conductive contact and a high are resistant contact on said member movable into and out of engagement with said high conductive base contact and said high are resistant base contact, respectively, said high are resistant member contact having a greater span of engagement with its base contact than said high conductive member contact has with its base contact; and means mounting the member contacts for releasable engagement with their respective base contacts upon movement of said member along said path with said high are resistant contact engaging its base contact prior to engagement of said high conductive contact with its base contact, and with said high are resistant contact disengaging its base contact after disengagement of said high conductive contact from its base contact; and means mounting said member for movement of said member contacts in said path.
- a base for controlling arcing during operation of the switch: a base; a pair of contacts mounted on said base and electrically connected with each other; a member movable in a given path with respect to said base and in consistent spaced relationship with respect to said base; contacts on said member, one movable into and out of engagement with each of said base contacts, a first of said member contacts having a greater span of engagement with its base contact than the other member contact has with its base contact; and means mounting the member contacts for releasable engagement with their respective base contacts upon movement of said member along said path with said first member contact engaging its base contact prior to engagement of said other member contact with its base contact, and with said first member contact disengaging its base contact after disengagement of said other member contact from its base contact; and means mounting said member for movement of said member contacts in said path.
- a non-conductive base having a face; a plurality of pairs of contacts mounted on said face in a predetermined path, each contact being electrically connected with the other contact of its pair; a non-conductive slide member movable along said path in consistent spaced relationship with respect to said base and having a face opposed to the base face; a high conductive contact and a high are resistant contact electrially connected to each other, said high are resistant contact being wider along said path than said high conductive contact, and means mounting the last said contacts on the slide face for selective engagement with said pairs of contacts upon movement of said slide along said path with said high conductive contact connecting first contacts of each of two.
- a slide-type electric switch for controlling arcing during operation of the switch: a base; a plurality of pairs of contacts mounted on said base to define a predetermined path, each contact being electrically connected with the other contact of its pair; a slide movable along said path and opposed to the base; a high conductive contact and a hi h are resistant contact electrically connected to each other, said high are resistant contact being wider along said path than said high conductive contact; and means mounting the last said contacts on said slide body for selective engagement with said pairs of contacts upon movement of said slide along said path with said high conductive contact engaging a first contact of the selected pair of contacts and said high are resistant contact engaging a second contact of the selected pair of contacts prior to said high conductive contact engaging said first contact, and said high arc resistant contact disengaging said second contact after disengagement of said high conductive contact from said first contact of the selected pair; and means mounting said slide for sliding movement with respect to said base and with said slide contacts in said path.
- a slide-type electric switch for controlling arcing during operation of the switch: a base; a pair of elec trically interconnected contacts mounted on said base and disposed in a predetermined path; a slide movable along said path and opposed to the base; a high conductive con tact and a high are resistant contact electrically connected to each other and one movable into and out of engagement with each of the base contacts, said high are resistant con tact having a greater span of engagement with its base contact than said high conductive contact has with its base contact; and means mounting the high are resistant and high conductive contacts on said slide for selective engagement with said base contacts upon movement of said slide along said path with said high are resistant contact engaging its base contact prior to engagement of said high conductive contact with its base contact and said high are resistant contact disengaging its base contact after disengagement of said high conductive contact from its base contact; and means mounting said slide for sliding movement with respect to said base with said slide contacts in said path.
- a slide-type electric switch for controlling arcing during operation of the switch: a base; a pair of electrically interconnected contacts mounted on said base and disposed in a predetermined path; a slide movable along said path and opposed to the base; a pair of contacts electrically connected to each other and one movable into and out of engagement with each of the base contacts, a first of said pair of contacts having a greater span of engagement With its base contact than the other of said pair of contacts has with its base contact; and means mounting said pair of contacts on said slide (for selective engagement with said base contacts upon movement of said slide along said path with said first contact engaging its base contact prior to engagement of said other contact with its base contact and said first contact disengaging its base contact after disengagement of said other contact from its base contact; and means mounting said slide for sliding movement with respect to said base with said slide contacts in said path.
- a stator base having a nonconductive body with opposite faces; a plurality of pairs of contacts radially disposed about an axis, the contacts of each pair being opposed to each other, one on each of said stator faces; electrical conductive fastening means extending through said stator body, one connected with the contacts of each pair of contacts and mounting the respective pair of contacts on said body; a rotor member movable in a predetermined path and in consistent spaced relationship with respect to said stator, said rotor having a non-conductive body with opposite faces; a high conduo tive contact on one of said rotor faces and a high are resistant contact on the opposite rotor face and opposed to said high conductive contact, said high are resistant contact being wider along said path than said high conductive contact; electrical conductive fastening means extending through said rotor body and connected with the rotor contacts and mounting the rotor contacts on said rotor body for selective engagement with said pairs of contacts
- a stator having a body with opposite faces, pairs of contacts disposed about an axis, one contact of each pair on each of said stator faces; means electrically connecting the contacts of each pair; a rotor movable in a predetermined path with respect to said stator, said rotor having a body with opposite faces, a high conductive contact on one of said rotor faces and a high are resistant contact on the opposite rotor face, said high are resistant contact being Wider along said path than said high conductive contact, means electrically connecting the rotor contacts; means mounting the rotor contacts on said rotor body for selective engagement with said pairs of contacts upon movement of said rotor along said predetermined path with said high conductive contact engaging one contact of the selected pair of contacts and said high are resistant contact engaging the other contact of the selected pair prior to said engagement of said high conductive contact, and with said high are resistant contact disengaging said other contact after disengagement of said high conductive contact from said one
- a stator having a body; a pair of contacts mounted on said body and electrically connected with each other; a rotor having a body movable in a predetermined path with respect to said stator; a high conductive contact and a high are resistant contact on said rotor body and one movable into and out of engagement with each of said stator contacts, said high are resistant contact having a greater span of engagement with its stator contact than said high conductive contact has with its stator contact; means mounting the rotor contacts on said rotor body for releasable engagement with said stator contacts upon movement of said rotor along said predetermined path with said high are resistant contact engaging its stator contact prior to engagement of said high conductive contact with its stator contact, and with said high arc resistant contact disengaging its stator contact after disengagement of said high conductive contact from its stator contact; and means mounting said rotor for rotation of said rotor contacts in said path.
- a stator having a body; a pair of contacts mounted on said body and electrically connected with each other; a rotor having a body movable in a predetermined path with respect to said stator; a pair of contacts on said rotor body and one movable into and out of engagement with each of said stator contacts, a first of said rotor contacts having a greater span of engagement with its stator contact than the other of said rotor contacts has with its stator contact; means mounting the rotor contacts on said rotor body for releasable engagement with said stator contacts upon movement of said rotor along said predetermined path with said first rotor contact engaging its stator contact prior to engagement of said other rotor contact with its stator contact, and with said first rotor contact disengaging its stator contact after disengagement of said first rotor contact from its stator contact; and means mounting said rotor for rotation of said rotor contacts in said path.
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- Arc-Extinguishing Devices That Are Switches (AREA)
Description
March 16, 1965 B. J. GOLBECK 3,174,000
ARC RESISTANT SWITCH Filed Sept. 19, 1962 INVENTOR.
United States Patent 3,174,000 ARC RESISTANT SWITCH Bernard J. Golbecir, Crystal Lake, 111., assignor to Oak Manufacturing (10., a corporation of Delaware Filed Sept. 19, 1962, Ser. No. 224,780 11 Claims. (Ci. 20tl-11) This invention relates to an electric switch, and more particularly to a high power capacity electric switch.
In high power capacity electric switches, arcing across switch contacts presents a major problem particularly during opening of the contacts and to some extent upon closing of the contacts. Various expedients have been suggested for overcoming such arcing problems, often by provision of low resistance contact for carrying normal electrical loads when the switch is closed and a high arc resistant contact for controlling arcing as the switch is being opened. However, such prior expedients have generally entailed complicated switch constructions, often of a basically impractical nature, or of such a nature as to substantially increase the cost of the switch.
The primary object of this invention is to provide a new and useful electrical switch.
An important object is provision of a new and useful electric switch for controlling arcing during operation of the switch.
A more specific object is provision of a new and useful high power capacity electric switch having a high are resistant contact electrically connected with a high conductive contact, and mounted in operative assembly in a simple and practical manner.
Other objects and advantages of the inveniton will become readily apparent from the following detailed description taken in connection with the accompanying drawings, in which:
FIGURE 1 is a facial view of an embodiment of an electric switch incorporating features of the invention;
FIGURE 2 is an enlarged, fragmentary sectional view taken generally along the line 22 of FIGURE 1;
FIGURE 3 is a fragmentary sectional view taken generally along the line 33 of FIGURE 2;
FIGURE 4 is a fragmentary sectional view taken generally along the line 4-4 of FIGURE 2;
FIGURE 5 is a side view of another embodiment of an electric switch incorporating features of the invention; and
FIGURE 6 is a sectional view taken generally along the line 66 FIGURE 5.
While illustrative embodiments of the invention are shown in the drawings and will be described in detail herein, the invention is susceptible of embodiment in many different forms, and it should be understood that the present disclosure is to be considered as an exemplification of the principles of the invention and is not in tended to limit the invention to the embodiments illustrated. The scope of the invention will be pointed out in the appended claims.
The invention is, in brief, directed to a practical solution to the problem of contact arcing during operation of high power capacity electric switches. This problem is solved by providing cooperating contacts in a switch including a high are resistant contact electrically connected with a high conductive contact in such a manner as to provide a simple and durable commercially practical switch assembly.
With reference to FIGURES 1 through 4 of the drawings, a rotary electric switch has a threaded hub 10 for mounting the switch in a suitably apertured panel, or the like. A rotary switch operating shaft 11 is journalled in hub 10 and mounts a switch rotor 12 received within a central opening 13 of a switch stator 14. In the illustrated embodiment a ball detent-type indexing assembly 15 3,1743% Patented Mar. 16, 1965 "ice includes a plate 16 fixedly secured to hub 10 in any suitable manner as by a rolled connection 17, and plate 16 fixedly secured to stator 14 in any suitable manner as by diametrically opposed bolts 18 which may be telescoped through sleeves (not shown) between plate 16 and stator 14. Indexing assembly 15 also includes a small plate 19 telescoped on shaft 11 and held against axial movement along the shaft toward rotor 12 by staked shaft portions 20, thus holding shaft 11 against movement through hub 10 in a direction to the right as viewed in FIGURE 2. A C-Wash 21 received in a circumferential groove in shaft 11 prevents movement of the shaft in an opposite direction.
With the exception of contacts 28b, and rotor ring 42 and including its contact 36, all of the other contact structures previously described are preferably of a high electrically conductive material thus providing a low contact resistance for carrying normal electrical loads, and a suitable material for this purpose is com silver. Contacts 28b and rotor ring 42 are of a high arc resistant material such as silver-cadmium alloy or silver-nickel alloy, and contact 36 is wider around a circumferential path of movement about the axis of shaft 11 than is rotor contact 35, so that as pairs of contacts 28a and 281) are engaged by the rotor contacts, rotor contact 36 engages its. cooperating contact 28b of the pair before high conductance rotor contact 35 engages its stator contact 2801. A circuit is completed from contact 43 through contact 36 to contact 28b of the pair of contacts before a circuit is completed from stator contact 41 through contact 35 to the other contact 28a of the pair of contacts, preventing arcing between cooperating normal load carrying contacts 28a and 35 of high current conductive material, upon closing of cooperating contacts. Similarly, high conductance rotor contact 35 disengages its cooperating stator contact 2dr: before high are resistant rotor contact 36 disengages its rotor contact 28]), again preventing arcing which would damage the high conductive contacts. Contacts 28b and rotor ring 42 may be made of high conductive material, in which event they absorb arcing until the contact 36 is burned to the same width as contact 35.
Referring to FIGURES 5 and 6, a slide-type switch is shown wherein a non-conductive base 50 carries a series of pairs of contacts 51a and 51b which are connected together. Contacts 51a and 51b may both be of high conductive material in order to facilitate economic manufacture of the switch, or contacts 51a may preferably be of high arc resistant material, and the same consideration applies to the foregoing embodiment. The contacts of a each pair are opposed to each other along opposite edge portions of the base, and secured to the base in any suitable manner. A slide 52 has a relatively short high conductive contact 53 movable in a path for engaging contacts 51a along one edge of base 50, and a relatively long contact 54, longer than contact 53 and mounted for movement on slide 52 to engage the contacts 51b along the other edge of base 50. Contact 54 may be made of high conductive material but is preferably of high are resistant material for the same reasons as previously discussed. Contacts 53 and 54 are connected to each other in a suitable manner as by connectors 55 and are mounted on the slide as by tabs 56 so that high are resistant contact 54 engages its cooperating contact 51b of the respective pair of contacts prior to engagement of high conductive conductive contact 53 with its cooperating contact 51a of the respective pair. As previously described, high are resistant contact 54 disengages its cooperating contact 51b of the respective pair of contacts after high conductive contact 53 has disengaged its cooperating contact 51a of the respective pair of contacts.
I claim:
1. In an electric switch for controlling arcing during operation of the switch: a non-conductive base; a plurality of pairs of contacts disposed in a path; electrical conductive means, one connected with the contacts of each pair of contacts; means mounting the pairs of contacts on said base; a non-conductive member movable along said path, with a high conductive contact and a high are resistant contact mounted on said member, said high arc resistant contact being longer along said path than said high conductive contact, and electrical conductive means connected with the member contacts whereby the member contacts selectively engage said pairs of contacts upon movement of said member along said path with said high conductive contact engaging one contact of the selected pair of contacts and said high are resistant contact engaging the other contact of the selected pair prior to said engagement of said high conductive contact, and with said high are resistant contact disengaging said other contact after disengagement of said high conductive contact from said one contact of the selected pair; and means mounting said member for movement along said path and said member contacts in said path.
2. In an electric switch for controlling arcing during operation of the switch: a base; a pair of contacts mounted on said base and electrically connected with each other, one of said contacts being a high conductive contact and the other contact being a high are resistant contact; a member movable in a given path with respect to said base and in consistent spaced relationship with respect to said base; a high conductive contact and a high are resistant contact on said member movable into and out of engagement with said high conductive base contact and said high are resistant base contact, respectively, said high are resistant member contact having a greater span of engagement with its base contact than said high conductive member contact has with its base contact; and means mounting the member contacts for releasable engagement with their respective base contacts upon movement of said member along said path with said high are resistant contact engaging its base contact prior to engagement of said high conductive contact with its base contact, and with said high are resistant contact disengaging its base contact after disengagement of said high conductive contact from its base contact; and means mounting said member for movement of said member contacts in said path.
3. In an electric switch for controlling arcing during operation of the switch: a base; a pair of contacts mounted on said base and electrically connected with each other; a member movable in a given path with respect to said base and in consistent spaced relationship with respect to said base; contacts on said member, one movable into and out of engagement with each of said base contacts, a first of said member contacts having a greater span of engagement with its base contact than the other member contact has with its base contact; and means mounting the member contacts for releasable engagement with their respective base contacts upon movement of said member along said path with said first member contact engaging its base contact prior to engagement of said other member contact with its base contact, and with said first member contact disengaging its base contact after disengagement of said other member contact from its base contact; and means mounting said member for movement of said member contacts in said path.
4. In a slide-type electric switch for controlling arcing during operation of the switch: a non-conductive base having a face; a plurality of pairs of contacts mounted on said face in a predetermined path, each contact being electrically connected with the other contact of its pair; a non-conductive slide member movable along said path in consistent spaced relationship with respect to said base and having a face opposed to the base face; a high conductive contact and a high are resistant contact electrially connected to each other, said high are resistant contact being wider along said path than said high conductive contact, and means mounting the last said contacts on the slide face for selective engagement with said pairs of contacts upon movement of said slide along said path with said high conductive contact connecting first contacts of each of two. selected pairs of contacts and said high are resistant contact connecting second contacts of each of the last said two selected pairs of contacts prior to said high conductive contact engaging both said first contacts, and with said high are resistant contact disengaging one of said second contacts after disengagement of said high conductive contact from one of said contacts of the selected pair; and means mounting said slide for sliding movement with respect to said base with said slide face opposed to said base face and said slide contacts in said path.
5. In a slide-type electric switch for controlling arcing during operation of the switch: a base; a plurality of pairs of contacts mounted on said base to define a predetermined path, each contact being electrically connected with the other contact of its pair; a slide movable along said path and opposed to the base; a high conductive contact and a hi h are resistant contact electrically connected to each other, said high are resistant contact being wider along said path than said high conductive contact; and means mounting the last said contacts on said slide body for selective engagement with said pairs of contacts upon movement of said slide along said path with said high conductive contact engaging a first contact of the selected pair of contacts and said high are resistant contact engaging a second contact of the selected pair of contacts prior to said high conductive contact engaging said first contact, and said high arc resistant contact disengaging said second contact after disengagement of said high conductive contact from said first contact of the selected pair; and means mounting said slide for sliding movement with respect to said base and with said slide contacts in said path.
6. In a slide-type electric switch for controlling arcing during operation of the switch: a base; a pair of elec trically interconnected contacts mounted on said base and disposed in a predetermined path; a slide movable along said path and opposed to the base; a high conductive con tact and a high are resistant contact electrically connected to each other and one movable into and out of engagement with each of the base contacts, said high are resistant con tact having a greater span of engagement with its base contact than said high conductive contact has with its base contact; and means mounting the high are resistant and high conductive contacts on said slide for selective engagement with said base contacts upon movement of said slide along said path with said high are resistant contact engaging its base contact prior to engagement of said high conductive contact with its base contact and said high are resistant contact disengaging its base contact after disengagement of said high conductive contact from its base contact; and means mounting said slide for sliding movement with respect to said base with said slide contacts in said path.
7. In a slide-type electric switch for controlling arcing during operation of the switch: a base; a pair of electrically interconnected contacts mounted on said base and disposed in a predetermined path; a slide movable along said path and opposed to the base; a pair of contacts electrically connected to each other and one movable into and out of engagement with each of the base contacts, a first of said pair of contacts having a greater span of engagement With its base contact than the other of said pair of contacts has with its base contact; and means mounting said pair of contacts on said slide (for selective engagement with said base contacts upon movement of said slide along said path with said first contact engaging its base contact prior to engagement of said other contact with its base contact and said first contact disengaging its base contact after disengagement of said other contact from its base contact; and means mounting said slide for sliding movement with respect to said base with said slide contacts in said path.
8. In a rotary-type electric switch for controlling arcing during operation of the switch: a stator base having a nonconductive body with opposite faces; a plurality of pairs of contacts radially disposed about an axis, the contacts of each pair being opposed to each other, one on each of said stator faces; electrical conductive fastening means extending through said stator body, one connected with the contacts of each pair of contacts and mounting the respective pair of contacts on said body; a rotor member movable in a predetermined path and in consistent spaced relationship with respect to said stator, said rotor having a non-conductive body with opposite faces; a high conduo tive contact on one of said rotor faces and a high are resistant contact on the opposite rotor face and opposed to said high conductive contact, said high are resistant contact being wider along said path than said high conductive contact; electrical conductive fastening means extending through said rotor body and connected with the rotor contacts and mounting the rotor contacts on said rotor body for selective engagement with said pairs of contacts upon movement of said rotor along said predetermined path with said high conductive contact engaging one contact of the selected pair of contacts and said high are resistant contact engaging the other contact of the selected pair prior to said engagement of said high conductive contact, and with said high arc resistant contact disengaging said other contact after disengagement of said high conductive contact from said one contact of the selected pair; and means mounting said rotor for rotation about said axis and said rotor contacts in said path.
9. In a rotary-type electric switch for controlling arcing during operation of the switch: a stator having a body with opposite faces, pairs of contacts disposed about an axis, one contact of each pair on each of said stator faces; means electrically connecting the contacts of each pair; a rotor movable in a predetermined path with respect to said stator, said rotor having a body with opposite faces, a high conductive contact on one of said rotor faces and a high are resistant contact on the opposite rotor face, said high are resistant contact being Wider along said path than said high conductive contact, means electrically connecting the rotor contacts; means mounting the rotor contacts on said rotor body for selective engagement with said pairs of contacts upon movement of said rotor along said predetermined path with said high conductive contact engaging one contact of the selected pair of contacts and said high are resistant contact engaging the other contact of the selected pair prior to said engagement of said high conductive contact, and with said high are resistant contact disengaging said other contact after disengagement of said high conductive contact from said one contact of the selected pair; and means mounting said rotor for rotation about said axis and said rotor contacts in said path.
10. In a rotary-type electric switch for controlling arcing during operation of the switch: a stator having a body; a pair of contacts mounted on said body and electrically connected with each other; a rotor having a body movable in a predetermined path with respect to said stator; a high conductive contact and a high are resistant contact on said rotor body and one movable into and out of engagement with each of said stator contacts, said high are resistant contact having a greater span of engagement with its stator contact than said high conductive contact has with its stator contact; means mounting the rotor contacts on said rotor body for releasable engagement with said stator contacts upon movement of said rotor along said predetermined path with said high are resistant contact engaging its stator contact prior to engagement of said high conductive contact with its stator contact, and with said high arc resistant contact disengaging its stator contact after disengagement of said high conductive contact from its stator contact; and means mounting said rotor for rotation of said rotor contacts in said path.
11. In a rotary-type electric switch for controlling arcing during operation of the switch: a stator having a body; a pair of contacts mounted on said body and electrically connected with each other; a rotor having a body movable in a predetermined path with respect to said stator; a pair of contacts on said rotor body and one movable into and out of engagement with each of said stator contacts, a first of said rotor contacts having a greater span of engagement with its stator contact than the other of said rotor contacts has with its stator contact; means mounting the rotor contacts on said rotor body for releasable engagement with said stator contacts upon movement of said rotor along said predetermined path with said first rotor contact engaging its stator contact prior to engagement of said other rotor contact with its stator contact, and with said first rotor contact disengaging its stator contact after disengagement of said first rotor contact from its stator contact; and means mounting said rotor for rotation of said rotor contacts in said path.
References Cited by the Examiner UNITED STATES PATENTS 2,168,373 8/39 Thompson 200-15 2,196,433 4/40 Allison 200-16 2,528,035 10/50 Clayton 200-16 2,554,724 5/51 Williams 200-11 2,594,190 4/52 Mastney 200-11 2,671,137 3/54 Zaug 200-16 2,902,550 9/59 Allison 200-16 2,905,773 9/59 Guillemant 200-16 2,949,511 8/60 Glueckstein et a1 200-11 BERNARD A. GILHEANY, Primary Examiner.
Claims (1)
1. IN AN ELECTRIC SWITCH FOR CONTROLLING ARCING DURING OPERATION OF THE SWITCH: A NON-CONDCTIVE BASE; A PLURALITY OF PAIRS OF CONTACTS DISPOSED IN A PATH; ELECTRICAL CONDUCTIVE MEANS, ONE CONNECTED WITH THE CONTACTS OF EACH PAIR OF CONTACTS; MEANS MOUNTING THE PAIRS OF CONTACTS ON SAID BASE; A NON-CONDUCTIVE MEMBER MOVABLE ALONG SAID PATH, WITH A HIGH CONDUCTIVE CONTACT AND A HIGH ARC RESISTANT CONTACT MOUNTED ON SAID MEMBER, SAID HIGH ARC RESISTANT CONTACT BEING LONGER SAID PATH THAN SAID HIGH CONDUCTIVE CONTACT, AND ELECTRICAL CONDUCTIVE MEANS CONNECTED WITH THE MEMBER CONTACTS WHEREBY THE MEMBER CONTACTS SELECTIVELY ENGAGE SAID PAIRS OF CONTACTS UPON MOVEMENT OF SAID MEMBER ALONG SAID PATH WITH SAID HIGH CONDUCTIVE CONTACT ENGAGING ONE CONTACT OF THE
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US224780A US3174000A (en) | 1962-09-19 | 1962-09-19 | Arc resistant switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US224780A US3174000A (en) | 1962-09-19 | 1962-09-19 | Arc resistant switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3174000A true US3174000A (en) | 1965-03-16 |
Family
ID=22842169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US224780A Expired - Lifetime US3174000A (en) | 1962-09-19 | 1962-09-19 | Arc resistant switch |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3174000A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3223794A (en) * | 1963-11-13 | 1965-12-14 | Indak Mfg Corp | Multiple position electrical switch with contact rails and dummy contact pressure stabilizers |
| US3235679A (en) * | 1963-10-18 | 1966-02-15 | Indak Mfg Corp | Lever toggle switch mechanism with lever rotation preventing means |
| US3268674A (en) * | 1965-01-29 | 1966-08-23 | Oak Electro Netics Corp | Switch section for a rotary electric switch |
| US3308248A (en) * | 1965-02-12 | 1967-03-07 | Globe Union Inc | Rotary switch with improved contact structure |
| US3343115A (en) * | 1964-12-02 | 1967-09-19 | Beckman Instruments Inc | Electrical resistance element |
| US3472975A (en) * | 1967-05-29 | 1969-10-14 | Indak Mfg Corp | Electrical switches with plural breaks |
| US3609257A (en) * | 1969-02-12 | 1971-09-28 | Ricoh Kk | Slide switch |
| US3624319A (en) * | 1970-04-16 | 1971-11-30 | Westinghouse Electric Corp | Transformer switch with improved rotary axial bridging contact structure |
| US4328401A (en) * | 1980-03-20 | 1982-05-04 | The Eastern Specialty Company | Meter test switch |
| US4959554A (en) * | 1989-05-08 | 1990-09-25 | Underwood Iv Joseph W T | Dual input-dual output electric switch |
| US5051548A (en) * | 1989-05-08 | 1991-09-24 | Wood 'n Rock, A Florida Partnership | Dual input-dual output electric switch |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2168373A (en) * | 1939-08-08 | Selector mechanism for electrical | ||
| US2196433A (en) * | 1937-12-20 | 1940-04-09 | Oak Mfg Co | Electric switch |
| US2528035A (en) * | 1946-03-07 | 1950-10-31 | Essex Wire Corp | Switch |
| US2554724A (en) * | 1948-11-10 | 1951-05-29 | Oak Mfg Co | Electric switch |
| US2594190A (en) * | 1950-03-09 | 1952-04-22 | Oak Mfg Co | Electrical apparatus |
| US2671137A (en) * | 1951-05-15 | 1954-03-02 | Telephonics Corp | Switch |
| US2902550A (en) * | 1956-03-01 | 1959-09-01 | Kenneth C Allison | Slide-type electric switch |
| US2905773A (en) * | 1956-11-16 | 1959-09-22 | Guillemant Rene Edouard | Electric switches |
| US2949511A (en) * | 1958-02-10 | 1960-08-16 | Globe Union Inc | Switches |
-
1962
- 1962-09-19 US US224780A patent/US3174000A/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2168373A (en) * | 1939-08-08 | Selector mechanism for electrical | ||
| US2196433A (en) * | 1937-12-20 | 1940-04-09 | Oak Mfg Co | Electric switch |
| US2528035A (en) * | 1946-03-07 | 1950-10-31 | Essex Wire Corp | Switch |
| US2554724A (en) * | 1948-11-10 | 1951-05-29 | Oak Mfg Co | Electric switch |
| US2594190A (en) * | 1950-03-09 | 1952-04-22 | Oak Mfg Co | Electrical apparatus |
| US2671137A (en) * | 1951-05-15 | 1954-03-02 | Telephonics Corp | Switch |
| US2902550A (en) * | 1956-03-01 | 1959-09-01 | Kenneth C Allison | Slide-type electric switch |
| US2905773A (en) * | 1956-11-16 | 1959-09-22 | Guillemant Rene Edouard | Electric switches |
| US2949511A (en) * | 1958-02-10 | 1960-08-16 | Globe Union Inc | Switches |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3235679A (en) * | 1963-10-18 | 1966-02-15 | Indak Mfg Corp | Lever toggle switch mechanism with lever rotation preventing means |
| US3223794A (en) * | 1963-11-13 | 1965-12-14 | Indak Mfg Corp | Multiple position electrical switch with contact rails and dummy contact pressure stabilizers |
| US3343115A (en) * | 1964-12-02 | 1967-09-19 | Beckman Instruments Inc | Electrical resistance element |
| US3268674A (en) * | 1965-01-29 | 1966-08-23 | Oak Electro Netics Corp | Switch section for a rotary electric switch |
| US3308248A (en) * | 1965-02-12 | 1967-03-07 | Globe Union Inc | Rotary switch with improved contact structure |
| US3472975A (en) * | 1967-05-29 | 1969-10-14 | Indak Mfg Corp | Electrical switches with plural breaks |
| US3609257A (en) * | 1969-02-12 | 1971-09-28 | Ricoh Kk | Slide switch |
| US3624319A (en) * | 1970-04-16 | 1971-11-30 | Westinghouse Electric Corp | Transformer switch with improved rotary axial bridging contact structure |
| US4328401A (en) * | 1980-03-20 | 1982-05-04 | The Eastern Specialty Company | Meter test switch |
| US4959554A (en) * | 1989-05-08 | 1990-09-25 | Underwood Iv Joseph W T | Dual input-dual output electric switch |
| US5051548A (en) * | 1989-05-08 | 1991-09-24 | Wood 'n Rock, A Florida Partnership | Dual input-dual output electric switch |
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