GB1319954A - Pressure difference responsive electric switches - Google Patents

Pressure difference responsive electric switches

Info

Publication number
GB1319954A
GB1319954A GB3067969A GB1319954DA GB1319954A GB 1319954 A GB1319954 A GB 1319954A GB 3067969 A GB3067969 A GB 3067969A GB 1319954D A GB1319954D A GB 1319954DA GB 1319954 A GB1319954 A GB 1319954A
Authority
GB
United Kingdom
Prior art keywords
assembly
pressure source
line
pressure difference
plunger
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
GB3067969A
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.)
Peugeot Motor Co PLC
Original Assignee
Chrysler United Kingdom 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 Chrysler United Kingdom Ltd filed Critical Chrysler United Kingdom Ltd
Publication of GB1319954A publication Critical patent/GB1319954A/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
    • H01H35/24—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/226—Devices for monitoring or checking brake systems; Signal devices using devices being responsive to the difference between the fluid pressions in conduits of multiple braking systems

Abstract

1319954 Indicating dual brake-line pressure failure CHRYSLER UNITED KINGDOM Ltd 9 June 1970 [17 June 1969] 30679/69 Heading F2E [Also in Division H1] A pressure difference responsive electric switch can be used in a vehicle braking system to energize a warning light when pressure fails in one fluid line and also to indicate which line has failed. The switch can occupy three positions. When the two pressures are equal the assembly has the position shown. When the left hand pressure source is lower, piston assembly 6, 7 moves to the left, Fig. 2 (not shown), and plunger 31 is moved upwards by core 9 to bridge fixed contacts 29 (only one shown) by movable contact 28, latch 42 latches in notch 40 and shoulder 43 is level with the top surface of the assembly to give a visual indication that the left hand pressure source is lower. When the right hand pressure source is lower, piston assembly 6, 7 moves to the right, Fig. 3 (not shown), and plunger 31 is moved upwards a greater amount by core 8 to close contacts 28, 29, engage latch 42 in notch 41 and shoulder 43 stands proud of the top surface.
GB3067969A 1969-06-17 1969-06-17 Pressure difference responsive electric switches Expired GB1319954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3067969 1969-06-17

Publications (1)

Publication Number Publication Date
GB1319954A true GB1319954A (en) 1973-06-13

Family

ID=10311432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3067969A Expired GB1319954A (en) 1969-06-17 1969-06-17 Pressure difference responsive electric switches

Country Status (3)

Country Link
US (1) US3632924A (en)
FR (1) FR2046830B1 (en)
GB (1) GB1319954A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782780A (en) * 1971-07-26 1974-01-01 Weatherhead Co Brake warning switch requiring recentering pressure
US3811021A (en) * 1971-12-30 1974-05-14 Tokai Rika Co Ltd Automatic reset hydraulic switch
US3975001A (en) * 1973-10-19 1976-08-17 American Hospital Supply Corporation Apparatus for mixing fluids held in tubes
JPS526112Y2 (en) * 1973-12-05 1977-02-08
JPS5521884Y2 (en) * 1974-05-22 1980-05-26
US4191952A (en) * 1978-08-25 1980-03-04 N.A.D., Inc. Low oxygen flow alarm for anesthesia systems
US5046313A (en) * 1989-07-27 1991-09-10 Allied-Signal Inc. Master cylinder with fluid level and pressure failure detection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1942096A (en) * 1931-05-26 1934-01-02 Commerce Guardian Bank Control for pressure feed lubricating systems
US3228194A (en) * 1965-02-17 1966-01-11 Bendix Corp Split system indicating means
US3382333A (en) * 1965-12-10 1968-05-07 Ford Motor Co Warning light switch for split brake system
US3475573A (en) * 1966-04-13 1969-10-28 Amp Inc Brake system signaling device
US3371172A (en) * 1966-06-29 1968-02-27 Boyne Products Inc Hazard warning switch with selfcatching construction

Also Published As

Publication number Publication date
US3632924A (en) 1972-01-04
FR2046830B1 (en) 1973-01-12
FR2046830A1 (en) 1971-03-12

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414B Case decided by the comptroller ** grants allowed (sect. 14/1949)
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee