GB2098277A - Spring applied brake control arrangement - Google Patents

Spring applied brake control arrangement

Info

Publication number
GB2098277A
GB2098277A GB8204642A GB8204642A GB2098277A GB 2098277 A GB2098277 A GB 2098277A GB 8204642 A GB8204642 A GB 8204642A GB 8204642 A GB8204642 A GB 8204642A GB 2098277 A GB2098277 A GB 2098277A
Authority
GB
United Kingdom
Prior art keywords
actuation
brake
piston
spring
fluid pressure
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.)
Granted
Application number
GB8204642A
Other versions
GB2098277B (en
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB2098277A publication Critical patent/GB2098277A/en
Application granted granted Critical
Publication of GB2098277B publication Critical patent/GB2098277B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B60T17/085—Spring loaded brake actuators
    • B60T17/086—Spring loaded brake actuators with emergency release device
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/12—Fluid pressure for releasing a normally applied brake, the type of actuator being irrelevant or not provided for in groups F16D2121/04 - F16D2121/10

Abstract

A brake control arrangement (30) permitting normal service brake actuation through a brake linkage (10) and providing automatic brake actuation in case assisting fluid pressure decreases. During normal operation, sufficient assisting fluid pressure is supplied to a pressurizable chamber (42) to move an actuation piston (34) to its non-actuation position against the biasing force of a spring (36). When fluid pressure falls below the pressure needed to counteract the spring's biasing force, the spring (36) displaces the piston (34) to an actuation position relative to a surrounding housing (40) and, during its displacement, displaces a brake engagement plunger (32) to its brake engaged position. Movement of the utilizing apparatus may thereafter be provided by axially displacing an engagement member (48) against the actuation piston (34) so as to drive the actuation piston (34) to its non-actuation position. The engagement member (48) has an indentation (48b) which accepts displacement of the plunger (32) thereinto and permits subsequent brake actuation by the brake linkage (10).
GB8204642A 1980-10-06 1980-10-06 Spring applied brake control arrangement Expired GB2098277B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1980/001318 WO1982001229A1 (en) 1980-10-06 1980-10-06 Spring applied brake control arrangement

Publications (2)

Publication Number Publication Date
GB2098277A true GB2098277A (en) 1982-11-17
GB2098277B GB2098277B (en) 1983-12-14

Family

ID=22154580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8204642A Expired GB2098277B (en) 1980-10-06 1980-10-06 Spring applied brake control arrangement

Country Status (5)

Country Link
JP (1) JPS57501487A (en)
FR (1) FR2491413B1 (en)
GB (1) GB2098277B (en)
IT (1) IT1139199B (en)
WO (1) WO1982001229A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578607B1 (en) * 1985-03-08 1987-06-05 Sab Nife Ste Sab VEHICLE BRAKE LINKAGE CONTROL DEVICE COMPRISING A SERVICE BRAKE AND A PARKING BRAKE

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT162784B (en) * 1946-10-25 1949-04-11 Friedmann Kg Alex Piston unit
US2809723A (en) * 1955-02-23 1957-10-15 Insley Mfg Corp Parking brake
US3443673A (en) * 1967-09-06 1969-05-13 Caterpillar Tractor Co Hydraulic and spring clutch release booster
US3712181A (en) * 1968-12-09 1973-01-23 Certain Teed Prod Corp Internal air assisted brake actuator
GB1403653A (en) * 1972-06-07 1975-08-28 Ts N I Vehicle brake actuators
US3796138A (en) * 1972-07-19 1974-03-12 Tmr Products Co Inc Pneumatic service emergency actuators for trucks, buses and trailers
JPS5111779Y2 (en) * 1972-09-22 1976-03-30
FR2252059A2 (en) * 1973-11-23 1975-06-20 Morey Henri Substitute for goose and duck liver - contg. selected fowl liver with fats, eggs, seasoning and cognac
JPS5842375B2 (en) * 1974-10-08 1983-09-19 ガ−リング リミテツド Car knob brake actuator

Also Published As

Publication number Publication date
WO1982001229A1 (en) 1982-04-15
FR2491413B1 (en) 1986-01-10
IT1139199B (en) 1986-09-24
FR2491413A1 (en) 1982-04-09
GB2098277B (en) 1983-12-14
IT8124328A0 (en) 1981-10-05
JPS57501487A (en) 1982-08-19

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee