GB1423160A - Vehicle wheel brake actuators - Google Patents
Vehicle wheel brake actuatorsInfo
- Publication number
- GB1423160A GB1423160A GB85373A GB85373A GB1423160A GB 1423160 A GB1423160 A GB 1423160A GB 85373 A GB85373 A GB 85373A GB 85373 A GB85373 A GB 85373A GB 1423160 A GB1423160 A GB 1423160A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake
- bush
- release
- piston
- 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.)
- Expired
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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
1423160 Brake actuators GIRLING Ltd 18 Dec 1973 [19 Dec 1972 5 Jan 1973 4 Sept 1973] 58647/72 853/73 and 41451/73 Heading F2F In a wheel brake actuator comprising a first piston assembly 5 for service braking and a second piston 2 urged by a spring 3 to apply the brakes for parking or in emergency and released by fluid pressure, force transferring means 13 extending axially and outwardly and release means 12 the parts 12, 13 extend through piston 2 with clearance, part 13 being engageable with piston 2 upon release of the opposing fluid pressure. A bush 14 is screw-threadedly connected at or near the outer end of part 13 and is a loosefit within an outer bush 15 screwthreadedly attached to piston 2, the bushes having complementary shoulders which are normally spaced apart and permit relative movement of the bushes in one axial direction but prevent it in the reverse sense. In the event of pressure failure the brake can be released manually by unscrewing member 13 from the bush 14 which is frictionally held against rotation by bush 15, member 13 being thus moved axially to release the brake. In a modification the force transferring member carries a part having diametrically opposed slots and a bush carries pins or pegs, release of the brake being achieved by aligning pins and slots to allow longitudinal movement. In another modification Fig. 5, a push rod 25 has a counterbore 26 within which is located a release plunger 27 with a wedge portion 28 and balls 29 are retained in circumferentially spaced apertures in the wall of the counterbore, to engage the part 28, by a cylindrical member 31 held in position by an end cap 32. The brake is released in the event of fluid pressure failure by pressing plunger 27 against a spring 33 to allow the balls to move inwardly and allow movement of the rod 25.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB85373A GB1423160A (en) | 1972-12-19 | 1973-01-05 | Vehicle wheel brake actuators |
AU63259/73A AU485074B2 (en) | 1972-12-19 | 1973-12-05 | Improvements in or relating to vehicle wheel brake actuators |
IN2733/CAL/73A IN140303B (en) | 1972-12-19 | 1973-12-15 | |
FR7345193A FR2211081A5 (en) | 1972-12-19 | 1973-12-18 | |
BR989773A BR7309897D0 (en) | 1972-12-19 | 1973-12-18 | IMPROVEMENT IN A VEHICLE WHEEL BRAKE ACTIVATION SERVOMOTOR |
DE19732365966 DE2365966B2 (en) | 1972-12-19 | 1973-12-19 | Auxiliary release device for the spring brake of a combined pressure medium spring brake cylinder |
US05/426,079 US3943829A (en) | 1972-12-19 | 1973-12-19 | Vehicle wheel brake actuators |
DE19732363268 DE2363268C3 (en) | 1972-12-19 | 1973-12-19 | Combined pressure medium spring brake cylinder for a vehicle wheel brake |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5864772 | 1972-12-19 | ||
GB85373A GB1423160A (en) | 1972-12-19 | 1973-01-05 | Vehicle wheel brake actuators |
GB4145173 | 1973-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1423160A true GB1423160A (en) | 1976-01-28 |
Family
ID=27253778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB85373A Expired GB1423160A (en) | 1972-12-19 | 1973-01-05 | Vehicle wheel brake actuators |
Country Status (5)
Country | Link |
---|---|
BR (1) | BR7309897D0 (en) |
DE (2) | DE2365966B2 (en) |
FR (1) | FR2211081A5 (en) |
GB (1) | GB1423160A (en) |
IN (1) | IN140303B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2067666B (en) * | 1980-01-14 | 1983-08-17 | Lucas Industries Ltd | Brake actuators |
JPH0348933Y2 (en) * | 1986-03-28 | 1991-10-18 | ||
US5943940A (en) * | 1995-11-30 | 1999-08-31 | Ab Volvo | Indication means in a brake cylinder for a vehicle brake |
BR9611839A (en) * | 1995-11-30 | 1999-07-13 | Volvo Ab | Indication device on a brake cylinder for a vehicle brake |
-
1973
- 1973-01-05 GB GB85373A patent/GB1423160A/en not_active Expired
- 1973-12-15 IN IN2733/CAL/73A patent/IN140303B/en unknown
- 1973-12-18 FR FR7345193A patent/FR2211081A5/fr not_active Expired
- 1973-12-18 BR BR989773A patent/BR7309897D0/en unknown
- 1973-12-19 DE DE19732365966 patent/DE2365966B2/en not_active Withdrawn
- 1973-12-19 DE DE19732363268 patent/DE2363268C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2365966A1 (en) | 1977-02-10 |
DE2363268B2 (en) | 1978-05-24 |
DE2365966B2 (en) | 1978-10-19 |
DE2363268A1 (en) | 1974-06-20 |
DE2363268C3 (en) | 1979-01-18 |
BR7309897D0 (en) | 1974-08-29 |
AU6325973A (en) | 1975-06-05 |
IN140303B (en) | 1976-10-16 |
FR2211081A5 (en) | 1974-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |