GB671050A - Improvements in inertia-operated electrical switches - Google Patents

Improvements in inertia-operated electrical switches

Info

Publication number
GB671050A
GB671050A GB15181/49A GB1518149A GB671050A GB 671050 A GB671050 A GB 671050A GB 15181/49 A GB15181/49 A GB 15181/49A GB 1518149 A GB1518149 A GB 1518149A GB 671050 A GB671050 A GB 671050A
Authority
GB
United Kingdom
Prior art keywords
inertia
june
crash
electrical switches
switch
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
GB15181/49A
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.)
Dowty Equipment Ltd
Original Assignee
Dowty Equipment Ltd
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 Dowty Equipment Ltd filed Critical Dowty Equipment Ltd
Priority to GB15181/49A priority Critical patent/GB671050A/en
Priority to US166719A priority patent/US2622163A/en
Publication of GB671050A publication Critical patent/GB671050A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed

Abstract

671,050. Inertia switches. DOWTY EQUIPMENT, Ltd., and SNELL, M. S. June 2, 1950.. [June 7, 1949] No. 15181/49. Class 38 (v). A switch specially suitable for use as a crash switch on aircraft, comprises a spring- controlled element 12, 13 adapted to bend when a certain acceleration is exceeded so that it engages a fixed element 11 to which it is magnetically attracted. In the form shown the element 12 is a magnet mounted on a stem 13 of springy brass and surrounded by a soft iron cylinder 11. A transparent disc 24 is arranged above the magnet and an adjustable cap 30 with markings on it enables the direction of the crash to be indicated. The casing 11, contains a damping liquid.
GB15181/49A 1949-06-07 1949-06-07 Improvements in inertia-operated electrical switches Expired GB671050A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB15181/49A GB671050A (en) 1949-06-07 1949-06-07 Improvements in inertia-operated electrical switches
US166719A US2622163A (en) 1949-06-07 1950-06-07 Electrical switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15181/49A GB671050A (en) 1949-06-07 1949-06-07 Improvements in inertia-operated electrical switches

Publications (1)

Publication Number Publication Date
GB671050A true GB671050A (en) 1952-04-30

Family

ID=10054445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15181/49A Expired GB671050A (en) 1949-06-07 1949-06-07 Improvements in inertia-operated electrical switches

Country Status (2)

Country Link
US (1) US2622163A (en)
GB (1) GB671050A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238662A (en) * 1989-11-29 1991-06-05 Breed Automotive Tech Crash sensors

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744177A (en) * 1952-08-06 1956-05-01 Knock A Bar Inc Liquid level signalling device
US2791653A (en) * 1955-07-12 1957-05-07 Ernest R Haberland Sensitive impact switch with magnetic hold
US2938973A (en) * 1957-03-27 1960-05-31 English Electric Co Ltd Mass-actuated electric switching devices
US2976378A (en) * 1958-06-03 1961-03-21 Lockheed Aircraft Corp Acceleration responsive devices
US3183321A (en) * 1960-07-08 1965-05-11 Aerodyne Controls Corp Gravity responsive switch
FR2296257A1 (en) * 1974-12-27 1976-07-23 Thomson Csf Shock operated electric switch - has pendulous mass annular magnet and microswitch to release contactor
US5415026A (en) * 1992-02-27 1995-05-16 Ford; David Vibration warning device including mercury wetted reed gauge switches

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1055153A (en) * 1911-03-06 1913-03-04 Donald B Ferguson Sounding device.
US1870347A (en) * 1926-09-10 1932-08-09 Thomas M Roberts Mass-movement detector
US1846966A (en) * 1929-12-27 1932-02-23 Temme Mfg Co Alarm for automobiles
GB446230A (en) * 1935-09-02 1936-04-27 Tubest Sa Improvements in or relating to inertia-operated electric switches for use on vehicles and other moving bodies
US2302283A (en) * 1940-07-19 1942-11-17 William P Yarnall Vehicle parking signal
US2464886A (en) * 1946-08-08 1949-03-22 Royal V O'reilly Electrical control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238662A (en) * 1989-11-29 1991-06-05 Breed Automotive Tech Crash sensors

Also Published As

Publication number Publication date
US2622163A (en) 1952-12-16

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