GB1418011A - Water-actuated electrical actuator - Google Patents

Water-actuated electrical actuator

Info

Publication number
GB1418011A
GB1418011A GB2599772A GB2599772A GB1418011A GB 1418011 A GB1418011 A GB 1418011A GB 2599772 A GB2599772 A GB 2599772A GB 2599772 A GB2599772 A GB 2599772A GB 1418011 A GB1418011 A GB 1418011A
Authority
GB
United Kingdom
Prior art keywords
water
switch
amplifier
coil
electrodes
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
Application number
GB2599772A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walter Kidde Ltd
Kidde Inc
Original Assignee
Walter Kidde Ltd
Walter Kidde and Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Walter Kidde Ltd, Walter Kidde and Co Inc filed Critical Walter Kidde Ltd
Priority to GB2599772A priority Critical patent/GB1418011A/en
Publication of GB1418011A publication Critical patent/GB1418011A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated

Landscapes

  • Amplifiers (AREA)

Abstract

1418011 Water actuated switching circuits WALTER KIDDE CO Ltd 28 June 1973 [2 June 1972 31 Oct 1972] 25997/72 and 50217/72 Heading H2H A water actuated electrical actuator comprises spaced electrodes E 1 , E 2 , a relay including a coil C 1 enclosed in a metal screening can SC and a switch S 1 , and an amplifier T 1 , T 2 so that the relay coil is energized by the amplifier when the electrodes are immersed in water. The switch S 1 is normally open to disconnect a pyrotechnic cartridge firing element C 2 from supply lines 1, 2. When a manually operated switch SO is closed and the electrodes E 1 , E 2 are immersed in water a small current flows. This current is amplified by transistors T 1 , T 2 and energizes the coil C 1 thus closing the switch S 1 to energize the element C 2 which enables inflation of a life jacket or life raft. In a modification the amplifier comprises a single transistor.
GB2599772A 1972-06-02 1972-06-02 Water-actuated electrical actuator Expired GB1418011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2599772A GB1418011A (en) 1972-06-02 1972-06-02 Water-actuated electrical actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2599772A GB1418011A (en) 1972-06-02 1972-06-02 Water-actuated electrical actuator
GB5021772 1972-10-31

Publications (1)

Publication Number Publication Date
GB1418011A true GB1418011A (en) 1975-12-17

Family

ID=26257996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2599772A Expired GB1418011A (en) 1972-06-02 1972-06-02 Water-actuated electrical actuator

Country Status (1)

Country Link
GB (1) GB1418011A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190254A (en) * 1986-05-07 1987-11-11 Duracell Int Condition responsive switching circuit
CN112173130A (en) * 2020-09-25 2021-01-05 中国直升机设计研究所 Emergency floating control device and method for civil helicopter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190254A (en) * 1986-05-07 1987-11-11 Duracell Int Condition responsive switching circuit
CN112173130A (en) * 2020-09-25 2021-01-05 中国直升机设计研究所 Emergency floating control device and method for civil helicopter

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees