GB2012873A - Improvements Relating to Spring Brake Actuators - Google Patents

Improvements Relating to Spring Brake Actuators

Info

Publication number
GB2012873A
GB2012873A GB7843673A GB7843673A GB2012873A GB 2012873 A GB2012873 A GB 2012873A GB 7843673 A GB7843673 A GB 7843673A GB 7843673 A GB7843673 A GB 7843673A GB 2012873 A GB2012873 A GB 2012873A
Authority
GB
United Kingdom
Prior art keywords
spring
segments
diaphragm
piston
improvements relating
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
GB7843673A
Other versions
GB2012873B (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.)
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
Priority to GB7843673A priority Critical patent/GB2012873B/en
Publication of GB2012873A publication Critical patent/GB2012873A/en
Application granted granted Critical
Publication of GB2012873B publication Critical patent/GB2012873B/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Braking Arrangements (AREA)

Abstract

A spring applied fluid pressure released brake actuator uses one or more diaphragm-type operating springs 14, the or each spring being made up of an annular array of segments with each segment clamped at its outer end 18 and located at its inner end 24 in an annular groove 26 on a hut 24 of the brake release piston 12. In use the segments are elastically deformed and adopt a bowed formation and the axial force applied to the piston 12 is substantially constant throughout its stroke. Because each diaphragm spring is made up of many segments the risk of total spring failure is greatly reduced. Moreover each spring is simple to construct and eliminates the side loads normally generated by coil springs. <IMAGE>
GB7843673A 1977-11-15 1978-11-08 Spring brake actuators Expired GB2012873B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7843673A GB2012873B (en) 1977-11-15 1978-11-08 Spring brake actuators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4746377 1977-11-15
GB7843673A GB2012873B (en) 1977-11-15 1978-11-08 Spring brake actuators

Publications (2)

Publication Number Publication Date
GB2012873A true GB2012873A (en) 1979-08-01
GB2012873B GB2012873B (en) 1982-05-06

Family

ID=26266054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7843673A Expired GB2012873B (en) 1977-11-15 1978-11-08 Spring brake actuators

Country Status (1)

Country Link
GB (1) GB2012873B (en)

Also Published As

Publication number Publication date
GB2012873B (en) 1982-05-06

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Legal Events

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

Effective date: 19931108

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)