GB1323108A - Fluid pressure operated brake actuators - Google Patents

Fluid pressure operated brake actuators

Info

Publication number
GB1323108A
GB1323108A GB1323108DA GB1323108A GB 1323108 A GB1323108 A GB 1323108A GB 1323108D A GB1323108D A GB 1323108DA GB 1323108 A GB1323108 A GB 1323108A
Authority
GB
United Kingdom
Prior art keywords
port
diaphragm
air
end wall
rib
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
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.)
Wabco Automotive UK Ltd
Original Assignee
Clayton Dewandre Co 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 Clayton Dewandre Co Ltd filed Critical Clayton Dewandre Co Ltd
Publication of GB1323108A publication Critical patent/GB1323108A/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
    • B60T17/10—Two or more cylinders acting on the same brake with means for rendering them effective selectively or successively, the number of effective cylinders being variable

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

1323108 Brake actuators CLAYTON DEWANDRE CO Ltd 14 Dec 1971 [22 Dec 1970] 60833/70 Heading F2F In an air pressure operated brake actuator of the kind wherein air is admitted under pressure to one side of a diaphragm through a port 2 in and end wall or pressure plate 1 with which the diaphragm co-acts to close off the port when air is not admitted therethrough, the ported end wall 1 is provided with an annular rib 8 concentric with the port, and the rib and diaphragm have valve element and valve seating structures which, when in engagement, seal off the port but at the same time define a chamber 10 the cross-sectional area of which is several times that of the port and is in permanent communication with the port whereby air introduced under pressure through the port will act at all times over the correspondingly larger area of the diaphragm. As shown, diaphragms 4, 5 are clamped at the peripheries thereof between a body 6 and the wall 1, are held in spaced relationship by a block 7 integral with or secured to one of the diaphragms, and are urged by a spring towards the end wall. The bead 9 forming the valve structure preferably is triangular in cross-section. In a modification, the bead 9 is formed on the rib 8, and, to prevent distortion of the diaphragm 4, protuberances are provided on the wall 1. (For Figure see next page)
GB1323108D 1970-12-22 1970-12-22 Fluid pressure operated brake actuators Expired GB1323108A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6083370 1970-12-22

Publications (1)

Publication Number Publication Date
GB1323108A true GB1323108A (en) 1973-07-11

Family

ID=10486156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323108D Expired GB1323108A (en) 1970-12-22 1970-12-22 Fluid pressure operated brake actuators

Country Status (1)

Country Link
GB (1) GB1323108A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2434800A1 (en) * 1974-07-19 1976-01-22 Graubremse Gmbh Combined pneumatic and spring brake - has membrane and membrane support plate with separate abutments
US5927177A (en) * 1997-12-22 1999-07-27 Tol-O-Matic, Inc. Multi-diaphragm actuator
US6286413B1 (en) 1998-02-20 2001-09-11 Tol-O-Matic, Inc. Diaphragm actuator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2434800A1 (en) * 1974-07-19 1976-01-22 Graubremse Gmbh Combined pneumatic and spring brake - has membrane and membrane support plate with separate abutments
US5927177A (en) * 1997-12-22 1999-07-27 Tol-O-Matic, Inc. Multi-diaphragm actuator
US6286413B1 (en) 1998-02-20 2001-09-11 Tol-O-Matic, Inc. Diaphragm actuator
EP1072794A3 (en) * 1999-07-26 2003-12-10 Tol-O-Matic, Inc. Multi - Diaphragm actuator

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee