GB839676A - Improvements in or relating to fluid control valves - Google Patents

Improvements in or relating to fluid control valves

Info

Publication number
GB839676A
GB839676A GB1568958A GB1568958A GB839676A GB 839676 A GB839676 A GB 839676A GB 1568958 A GB1568958 A GB 1568958A GB 1568958 A GB1568958 A GB 1568958A GB 839676 A GB839676 A GB 839676A
Authority
GB
United Kingdom
Prior art keywords
valve
sleeve
diaphragm
chambers
brake
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
GB1568958A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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
Priority claimed from US214747A external-priority patent/US2694468A/en
Priority claimed from US65959857 external-priority patent/US2910051A/en
Application filed by Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB839676A publication Critical patent/GB839676A/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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58—Combined or convertible systems
    • B60T13/581—Combined or convertible systems both hydraulic and pneumatic
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Regulating Braking Force (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

839,676. Fluid-pressure brakes. BENDIX AVIATION CORPORATION. May 15, 1958 [May 16, 1957], No. 15689/58. Class 103 (1). [Also in Group XXIX] A valve C for controlling the trailer brakes of a tractor-trailer vehicle combination of the type described in Specification 726,760 comprises chambers 52, 54 separated by a diaphragm structure 60 and connected to a vacuum reservoir 28 and the trailer brake actuator valve B, respectively, and a valve 68 regulating the supply of air from atmosphere to the brake, actuated by a tubular sleeve valve 78 slidable in diaphragm 60 and connected to a piston 98 in a cylinder communicating by a pipe 44 with the brake master cylinder 10. The valve is shown in the lapped condition but normally, with the brakes off, diaphragm structure 60 is urged to the right against fixed abutments.90 by a spring 88 and the right-hand end of sleeve 78 is separated from a member 70 actuating air valve 68; in this condition control chamber 54 communicates with vacuum chamber 52 through the interior of sleeve 78 and ports 84. Upon making a brake application piston 98 moves sleeve 78 to the right, to seat against member 70 and cut off communication between chambers 52, 54, and then opens valve 68 to admit air to control chamber 54. Pressure builds up until the differential load across diaphragm 60 causes it to move to the left against the force of spring 88 and the valve takes up the lapped position. Movement of sleeve 78 to the left establishes communication between vacuum and control chambers 52, 54. Upon brake release a return spring 94 separates sleeve 78 from member 70 to restore communication between chambers 52, 54, thus eliminating the pressure differential across diaphragm 60 which is then returned to its position against abutments 90 by spring 88.
GB1568958A 1951-03-09 1958-05-15 Improvements in or relating to fluid control valves Expired GB839676A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US214747A US2694468A (en) 1951-03-09 1951-03-09 Tractor-trailer brake system
US65959857 US2910051A (en) 1957-05-16 1957-05-16 Pneumatic brake valve to provide feel

Publications (1)

Publication Number Publication Date
GB839676A true GB839676A (en) 1960-06-29

Family

ID=26909313

Family Applications (3)

Application Number Title Priority Date Filing Date
GB577752A Expired GB704436A (en) 1951-03-09 1952-03-05 Improvements in or relating to fluid pressure braking systems
GB2455953A Expired GB726760A (en) 1951-03-09 1953-09-04 Tractor-trailer fluid pressure brake system
GB1568958A Expired GB839676A (en) 1951-03-09 1958-05-15 Improvements in or relating to fluid control valves

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB577752A Expired GB704436A (en) 1951-03-09 1952-03-05 Improvements in or relating to fluid pressure braking systems
GB2455953A Expired GB726760A (en) 1951-03-09 1953-09-04 Tractor-trailer fluid pressure brake system

Country Status (2)

Country Link
FR (2) FR1057025A (en)
GB (3) GB704436A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304129A (en) * 1960-04-30 1967-02-14 Girling Ltd Load adjusted brake control means for vehicles
US3390919A (en) * 1965-07-12 1968-07-02 Boyce Albert Control valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304129A (en) * 1960-04-30 1967-02-14 Girling Ltd Load adjusted brake control means for vehicles
US3390919A (en) * 1965-07-12 1968-07-02 Boyce Albert Control valve

Also Published As

Publication number Publication date
FR1057025A (en) 1954-03-04
GB704436A (en) 1954-02-24
FR65295E (en) 1956-02-08
GB726760A (en) 1955-03-23

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