GB537346A - Improvements in or relating to electromagnetic apparatus such as electromagneticallyoperated relays, contactors and switches - Google Patents
Improvements in or relating to electromagnetic apparatus such as electromagneticallyoperated relays, contactors and switchesInfo
- Publication number
- GB537346A GB537346A GB733/40A GB73340A GB537346A GB 537346 A GB537346 A GB 537346A GB 733/40 A GB733/40 A GB 733/40A GB 73340 A GB73340 A GB 73340A GB 537346 A GB537346 A GB 537346A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- rod
- friction
- piece
- switches
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
- H01H50/645—Driving arrangements between movable part of magnetic circuit and contact intermediate part making a resilient or flexible connection
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
537,346. Electromagnetic switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan. 12, 1940, No. 733. Convention date, Jan, 12, 1939. [Class 38 (v)] Noise of operation of an electromagnetic contactor or like device is reduced by means of a friction device 81 connecting the armature 13 to a rod 80 which has a certain freedom of movement relative to the base 14. An auxiliary pole piece 71 loosely mounted in the armature 13 may also be provided. In the form shown the armature 13, which controls a main contact 40 and an auxiliary contact 64, is pivoted at 23, and the auxiliary pole piece 71 has a neck portion which projects through a narrowed portion of the recess in the armature. In action the piece 71 first strikes the attracting core 17 and the relative motion that then ensues between the piece 71 and the armature 13 together with the strong magnetic forces present provide a cushioning effect. The friction device 81 comprises a friction block connected to the rod 80 and embraced by two spring-biassed friction washers connected to the armature. The rod 80 carries two washers 82, 83 which determine the extent of its movement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US250560A US2235391A (en) | 1939-01-12 | 1939-01-12 | Electric relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB537346A true GB537346A (en) | 1941-06-18 |
Family
ID=22948249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB733/40A Expired GB537346A (en) | 1939-01-12 | 1940-01-12 | Improvements in or relating to electromagnetic apparatus such as electromagneticallyoperated relays, contactors and switches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2235391A (en) |
| GB (1) | GB537346A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE485687A (en) * | 1948-04-22 | |||
| US2827527A (en) * | 1954-12-29 | 1958-03-18 | Gen Electric | Non-bouncing magnetic contactor |
| TWI680483B (en) * | 2019-07-03 | 2019-12-21 | 百容電子股份有限公司 | Electromagnetic relay |
-
1939
- 1939-01-12 US US250560A patent/US2235391A/en not_active Expired - Lifetime
-
1940
- 1940-01-12 GB GB733/40A patent/GB537346A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2235391A (en) | 1941-03-18 |
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