GB1375939A - Pressure sensitive switches - Google Patents

Pressure sensitive switches

Info

Publication number
GB1375939A
GB1375939A GB4575672A GB4575672A GB1375939A GB 1375939 A GB1375939 A GB 1375939A GB 4575672 A GB4575672 A GB 4575672A GB 4575672 A GB4575672 A GB 4575672A GB 1375939 A GB1375939 A GB 1375939A
Authority
GB
United Kingdom
Prior art keywords
pads
stack
switch
motor
lamps
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
GB4575672A
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.)
Essex International Inc
Original Assignee
Essex International 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 Essex International Inc filed Critical Essex International Inc
Publication of GB1375939A publication Critical patent/GB1375939A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H01H1/403—Contacts forming part of a printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Abstract

1375939 Road traffic signals on vehicles ESSEX INTERNATIONAL Inc 4 Oct 1972 [4 Oct 1971] 45756/72 Heading G4Q [Also in Division H1] A combined stop warning, direction signalling and hazard warning system for a motor vehicle includes a switch (see Division H1) wherein a stack of pads of non-conductive elastomer loaded with conductive particles is compressed to render the pads conductive. As shown, a motor 52 can drive a cam 82 having lobes 83 which bear against respective end plates 69, 69a of two stacks of pads 64 and 64a to subject the pads to progressively increasing compression which is suddently relieved by dwell areas 84. The pads of stack 64 are connected to right indicator lamps 1, 2, 3, 4 while stack 64a is connected to left indicator lamps 5 to 8. A control switch 9 has movable bridges 10 and 15 which normally connect both sets of rear indicator lamps 1, 2, 3 and 5, 6, 7, via diodes 27 and 34, to a brakeoperated switch 22 for simultaneous steady illumination of the said lamps while braking. When a bridge 10 or 15 is moved to its position shown by dotted lines to indicate a right or left turn the supply line 19 is connected to the appropriate stack of pads 64 or 64a and, via diode 49 or 50, to motor 52. The first three pads of each stack are of differing sensitivities such that as the cam 82 revolves the lamps 1, 2, 3 or 5, 6, 7) are lit in sequence and then extinguished together. The sensitivity of the fourth pad may be the same as any of the other three such that a front lamp 4 (or 8) is also flashed. If hazard warning switch 54 is closed supply line 62 is connected to lines 57 and 58 whereby both stacks 64 and 64a and motor 52 are energized and both right and left indicator lamps are rendered operative.
GB4575672A 1971-10-04 1972-10-04 Pressure sensitive switches Expired GB1375939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18595771A 1971-10-04 1971-10-04

Publications (1)

Publication Number Publication Date
GB1375939A true GB1375939A (en) 1974-12-04

Family

ID=22683085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4575672A Expired GB1375939A (en) 1971-10-04 1972-10-04 Pressure sensitive switches

Country Status (7)

Country Link
US (1) US3758733A (en)
JP (1) JPS5112822B2 (en)
CA (1) CA968836A (en)
DE (1) DE2248635C3 (en)
FR (1) FR2156039B1 (en)
GB (1) GB1375939A (en)
IT (1) IT974649B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1454281A (en) * 1973-04-28 1976-11-03 Lucas Electrical Ltd Electrical switch
US3979570A (en) * 1973-05-16 1976-09-07 Kabushiki Kaisha Tokai Rika Denki Seisakusho Switching apparatus
US3879586A (en) * 1973-10-31 1975-04-22 Essex International Inc Tactile keyboard switch assembly with metallic or elastomeric type conductive contacts on diaphragm support
JPS5073880U (en) * 1973-11-09 1975-06-28
US3944766A (en) * 1974-07-03 1976-03-16 Essex International, Inc. Seat belt buckle having pushbutton type switch with elastomeric conductor bridging contact
US3959610A (en) * 1974-12-13 1976-05-25 Motorola, Inc. Hermetically sealed keyboard type assembly with elastomeric electrical connecting link between switch and component modules
JPS51118554U (en) * 1975-03-20 1976-09-25
JPS51124424A (en) * 1975-04-22 1976-10-29 Fuji Photo Optical Co Ltd Switch device
US4055735A (en) * 1975-10-23 1977-10-25 Honeywell Information Systems Inc. Touch sensitive device
JPS558178Y2 (en) * 1976-11-15 1980-02-23
GB2064873B (en) * 1979-11-26 1984-09-05 Eventoff Franklin Neal Pressure sensitive electric switch
JPS603415A (en) * 1983-06-20 1985-01-09 Honda Motor Co Ltd Oil pressure switch for engine
JPS6113520A (en) * 1984-06-27 1986-01-21 松下冷機株式会社 Pressure switch
US4801925A (en) * 1987-02-02 1989-01-31 Davis Albert F Alarm transmission system and circuit interception switch
US4795869A (en) * 1987-09-01 1989-01-03 S&C Electric Company Contact assembly for high-voltage switch
WO1992015109A2 (en) * 1991-02-15 1992-09-03 Niessen Guenther Arrangement of control switching and control device therefor
JP4288871B2 (en) * 2001-06-26 2009-07-01 パナソニック電工株式会社 Rotation switch
US7768366B1 (en) 2007-10-29 2010-08-03 The United States Of America As Represented By The Secretary Of The Air Force Nanoparticles and corona enhanced MEMS switch apparatus
IT1398690B1 (en) * 2009-07-07 2013-03-08 Eltek Spa SWITCH FOR VEHICLES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR577386A (en) * 1923-04-17 1924-09-04 Forges Ateliers Const Electr Electrical resistance can vary gradually
DE1103077B (en) * 1959-12-08 1961-03-23 Daimler Benz Ag Display device for the oil pressure in internal combustion engines

Also Published As

Publication number Publication date
DE2248635C3 (en) 1975-09-04
IT974649B (en) 1974-07-10
DE2248635A1 (en) 1973-04-12
US3758733A (en) 1973-09-11
JPS5112822B2 (en) 1976-04-22
DE2248635B2 (en) 1975-01-16
CA968836A (en) 1975-06-03
FR2156039B1 (en) 1975-10-24
JPS4872669A (en) 1973-10-01
FR2156039A1 (en) 1973-05-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee