ZA782263B - Fluid pressure control valve device arranged for fail-safe operation - Google Patents

Fluid pressure control valve device arranged for fail-safe operation

Info

Publication number
ZA782263B
ZA782263B ZA00782263A ZA782263A ZA782263B ZA 782263 B ZA782263 B ZA 782263B ZA 00782263 A ZA00782263 A ZA 00782263A ZA 782263 A ZA782263 A ZA 782263A ZA 782263 B ZA782263 B ZA 782263B
Authority
ZA
South Africa
Prior art keywords
fail
control valve
fluid pressure
pressure control
valve device
Prior art date
Application number
ZA00782263A
Other languages
English (en)
Inventor
J Cannon
Original Assignee
Westinghouse Air Brake 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 Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Publication of ZA782263B publication Critical patent/ZA782263B/xx

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
    • B60T17/18—Safety devices; Monitoring
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • B60T15/24—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by three fluid pressures

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)
ZA00782263A 1977-11-09 1978-04-20 Fluid pressure control valve device arranged for fail-safe operation ZA782263B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/849,821 US4125294A (en) 1977-11-09 1977-11-09 Fluid pressure control valve device arranged for fail-safe operation

Publications (1)

Publication Number Publication Date
ZA782263B true ZA782263B (en) 1979-04-25

Family

ID=25306601

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00782263A ZA782263B (en) 1977-11-09 1978-04-20 Fluid pressure control valve device arranged for fail-safe operation

Country Status (4)

Country Link
US (1) US4125294A (enExample)
JP (1) JPS5475711A (enExample)
CA (1) CA1075737A (enExample)
ZA (1) ZA782263B (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192118A (en) * 1991-06-06 1993-03-09 Westinghouse Air Brake Company Electro-pneumatic locomotive brake control system
US5358315A (en) * 1993-04-01 1994-10-25 Westinghouse Air Brake Company Microprocessor-based electropneumatic locomotive brake control system having pneumatic backup brake control
US9333959B2 (en) 2012-04-03 2016-05-10 Wabtec Holding Corp. Brake cylinder maintaining valve
US10112594B2 (en) * 2015-09-23 2018-10-30 Amsted Rail Company, Inc. Brake cylinder pressure maintenance valves for freight car brake equipment
AU2017229218B2 (en) * 2016-03-07 2021-10-28 Westinghouse Air Brake Technologies Corporation Brake cylinder maintaining valve
US9925969B2 (en) 2016-03-07 2018-03-27 Westinghouse Air Brake Technologies Corporation Cut-off valve and hot wheel protection valve arrangement
US10059320B2 (en) * 2017-01-25 2018-08-28 Westinghouse Air Brake Technologies Corporation Automatic retainer valve
US10647309B2 (en) 2017-12-08 2020-05-12 Westinghouse Air Brake Technologies Corporation Quick Service Limiting Valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025126A (en) * 1976-01-19 1977-05-24 Westinghouse Air Brake Company Brake control valve device with movable control reservoir charging valve
US4043605A (en) * 1977-01-10 1977-08-23 Westinghouse Air Brake Company Emergency portion for a brake control valve

Also Published As

Publication number Publication date
CA1075737A (en) 1980-04-15
JPS5475711A (en) 1979-06-16
US4125294A (en) 1978-11-14
JPS5636100B2 (enExample) 1981-08-21

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