GB1327526A - Piston control devices - Google Patents

Piston control devices

Info

Publication number
GB1327526A
GB1327526A GB2074171A GB2074171A GB1327526A GB 1327526 A GB1327526 A GB 1327526A GB 2074171 A GB2074171 A GB 2074171A GB 2074171 A GB2074171 A GB 2074171A GB 1327526 A GB1327526 A GB 1327526A
Authority
GB
United Kingdom
Prior art keywords
piston
grid
diaphragm
projections
valve
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
GB2074171A
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.)
KNORR BREMSE GmbH
Knorr Bremse AG
Original Assignee
KNORR BREMSE GmbH
Knorr Bremse AG
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 KNORR BREMSE GmbH, Knorr Bremse AG filed Critical KNORR BREMSE GmbH
Publication of GB1327526A publication Critical patent/GB1327526A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1812—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction
    • B60T8/1825—Means for changing the diaphragm area submitted to pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Actuator (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

1327526 Braking systems KNORRBREMSE GmbH 19 April 1971 [30 Jan 1970] 20741/71 Heading F2F A piston control device for a fluid pressure braking system comprises a piston 27, a diaphragm 23 arranged to overlie the piston 27 and a grid interposed between the piston 27 and diaphragm 23. The piston 27 is provided with parallel projections 30 which are able to pass through the grid and engage the diaphragm 23 the diaphragm engaging surfaces of the piston and grid being so configured that as the piston moves axially of the device from its position in which maximum penetration of the grid by the projections is achieved the diaphragm is progressively withdrawn from contact with the projections by the grid. The aforesaid surface of the grid may be concave (as shown) or convex with the surface formed by the projections convex (as shown) or concave respectively. As shown the control device is incorporated in a braking force regulating arrangement of a vehicle, the position of the piston relative to the grid being determined by the load on the vehicle. The position 27 is urged to this position by a rack and pinion actuated tubular member 36. Two valve closure members 42, 46 are carried by a shaft and the assembly formed thereby is guided slidably by the tubular member 36. The member 42 co-operates with a seat 43 formed in the member 36, and the member 46 with a seat on the piston to form a self-lapping valve arrangement. The chamber 66 of the regulating arrangement is connected to the driver valve. A connection 35 to a reservoir or driver valve is also provided. A connection 48 leads to the brake cylinders of the braking system.
GB2074171A 1970-01-30 1971-04-19 Piston control devices Expired GB1327526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702004227 DE2004227B2 (en) 1970-01-30 1970-01-30 DIAPHRAGM PISTON

Publications (1)

Publication Number Publication Date
GB1327526A true GB1327526A (en) 1973-08-22

Family

ID=5760978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2074171A Expired GB1327526A (en) 1970-01-30 1971-04-19 Piston control devices

Country Status (3)

Country Link
DE (1) DE2004227B2 (en)
FR (1) FR2077139A5 (en)
GB (1) GB1327526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466672A (en) * 1980-10-01 1984-08-21 Bendix Limited Variable pressure ratio valve for vehicle braking system having double valve assembly set as function of vehicle load
CN104929924A (en) * 2014-03-20 2015-09-23 安诺维雷韦尔贝里有限公司 A diaphragm-plate group for diaphragm pumps

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2643296B2 (en) * 1976-09-25 1979-01-11 Wabco Westinghouse Gmbh, 3000 Hannover Load-dependent braking force control device
DE2646288B2 (en) * 1976-10-14 1979-09-27 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Load-dependent braking force control device
FR2365467A1 (en) * 1976-09-25 1978-04-21 Wabco Westinghouse Gmbh Trailer braking force regulator - has piston to operate regulator and relay valves connected to second piston which operates relief valve
DE2814421A1 (en) * 1978-04-04 1979-10-18 Bosch Gmbh Robert BRAKE FORCE CONTROLLER FOR VEHICLES WITH COMPRESSED AIR BRAKES
DE2918032C2 (en) * 1979-05-04 1983-11-10 Graubremse Gmbh, 6900 Heidelberg Relay valve for pressurized brake systems on motor vehicles and trailers
FR2698665B1 (en) * 1992-11-27 1995-02-17 Imaje Sealed piston pump.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466672A (en) * 1980-10-01 1984-08-21 Bendix Limited Variable pressure ratio valve for vehicle braking system having double valve assembly set as function of vehicle load
CN104929924A (en) * 2014-03-20 2015-09-23 安诺维雷韦尔贝里有限公司 A diaphragm-plate group for diaphragm pumps
CN104929924B (en) * 2014-03-20 2019-05-10 安诺维雷韦尔贝里有限公司 Diaphragm pump

Also Published As

Publication number Publication date
DE2004227A1 (en) 1971-08-26
FR2077139A5 (en) 1971-10-15
DE2004227B2 (en) 1973-05-24

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees