GB1267310A - Hydraulic circuit breaker - Google Patents

Hydraulic circuit breaker

Info

Publication number
GB1267310A
GB1267310A GB3604870A GB3604870A GB1267310A GB 1267310 A GB1267310 A GB 1267310A GB 3604870 A GB3604870 A GB 3604870A GB 3604870 A GB3604870 A GB 3604870A GB 1267310 A GB1267310 A GB 1267310A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
main
outlet
actuator
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
GB3604870A
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 Corp
Original Assignee
Bendix 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
Application filed by Bendix Corp filed Critical Bendix Corp
Publication of GB1267310A publication Critical patent/GB1267310A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/005—Leakage; Spillage; Hose burst
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2703—Flow rate responsive
    • Y10T137/2705—Pressure differential
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7723—Safety cut-off requiring reset
    • Y10T137/7726—Responsive to change in rate of flow
    • Y10T137/7727—Excessive flow cut-off

Abstract

1,267,310. Fluid-pressure servomotor systems. BENDIX CORP. July 24, 1970 [Aug. 19, 1969], No. 36048/70. Heading G3P. A hydraulic circuit breaker comprises a housing 10 with a main valve piston member 18 which is actuated to isolate a utilization outlet 16 to an actuator from a pressure inlet 12 in the event of abnormal loss of pressure either between the outlet and the actuator or in a return conduit 69 from the actuator which passes through the housing. Mounted within the main piston is an auxiliary valve piston having at least two piston elements on a common rod 30. One element 28 is responsive on opposite sides through ports 22, 24 to the pressures on the upstream and downstream sides of a flow restriction formed by a ridge 20 on the main piston. Loss of pressure downstream of the outlet moves the auxiliary piston to the right at a rate controlled by a dashpot piston 38 having an orifice 42, to a position where a second piston element 32 exhausts pressure from the left hand side of the main piston through a chamber 52 and passage 74 to the return conduit, so allowing the main piston to move to the left and shut off the outlet 16. As shown, a third piston element 34 in operated position places the right hand end of the main piston in communication with one side of the element 28. In the event of loss of pressure in the return conduit 69, a separate control piston 62, which is subjected to the pressure upstream of a check valve 68 through a passage 64, is moved to relieve the loading of a spring 58 and the auxiliary piston again operates to cause closure of the main valve piston.
GB3604870A 1969-08-19 1970-07-24 Hydraulic circuit breaker Expired GB1267310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85128869A 1969-08-19 1969-08-19

Publications (1)

Publication Number Publication Date
GB1267310A true GB1267310A (en) 1972-03-15

Family

ID=25310417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3604870A Expired GB1267310A (en) 1969-08-19 1970-07-24 Hydraulic circuit breaker

Country Status (5)

Country Link
US (1) US3568705A (en)
JP (1) JPS4914806B1 (en)
DE (1) DE2041213A1 (en)
FR (1) FR2058370B1 (en)
GB (1) GB1267310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237664A (en) * 1989-10-05 1991-05-08 Plessis Jacobus Nicolaas Du Safety valve arrangement

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685531A (en) * 1970-10-12 1972-08-22 Bertea Corp Circuit breaker
US3861209A (en) * 1973-12-11 1975-01-21 Us Air Force Low pressure test for reservoir level system
DE2415795C2 (en) * 1974-04-01 1984-06-28 Fa. Josef Messmann, 4490 Papenburg Break protection for hydraulic lines
JPS5111615A (en) * 1974-07-20 1976-01-29 Nihon Cement SEMENTOKEIKYUONZAIOYOBISONO SEIZOHOHO
JPS529020A (en) * 1975-07-12 1977-01-24 Koito Kogyo Kk Sound absorbing foamy concrete for outdoors and its manufacture
JPS5671817U (en) * 1979-11-07 1981-06-13
US4611620A (en) * 1981-04-02 1986-09-16 Parker Hannifin Corporation Hydraulic circuit breaker
US4732190A (en) * 1986-02-26 1988-03-22 Polselli James V Shut-off valve and method for using same
JPS63151618U (en) * 1987-03-26 1988-10-05
US4892114A (en) * 1989-04-13 1990-01-09 M. C. Aerospace Corporation Flow-sensing shutoff valve
US5744701A (en) * 1995-01-20 1998-04-28 The Toro Company Electronic liquid leak detector
US6230089B1 (en) 1992-01-03 2001-05-08 The Toro Company Turf maintenance vehicle multiple controller method and apparatus
EP0741895B1 (en) * 1994-02-03 2002-11-27 Ransomes America Corporation Hydraulic fluid leak detection system and method
US5402110A (en) * 1994-02-03 1995-03-28 Ransomes America Corporation Hydraulic fluid leak detection system and method
DE4438771A1 (en) * 1994-10-24 1996-04-25 Andreas Ruhle Automatic switch-off system for hydraulic load with occurrence of leakage
USH1761H (en) * 1996-10-07 1998-12-01 The United States Of America As Represented By The Secretary Of The Navy Hydraulic circuit leak detector and shut-off mechanism
WO2002084423A1 (en) 2001-04-16 2002-10-24 Advanced Safety Technologies, Inc. Combination surge suppressor and safety shut-off valve
DE10228025B3 (en) * 2002-06-24 2004-03-18 Alois Anton Ehrler Volumenstromdosiereinrichtung
US7077376B2 (en) * 2004-09-09 2006-07-18 Devas, Inc. Water saver valve
US9481452B2 (en) * 2010-11-22 2016-11-01 The Boeing Company Hydraulic actuator for semi levered landing gear
US8939400B2 (en) 2011-02-21 2015-01-27 The Boeing Company Air-ground detection system for semi-levered landing gear
US8998133B2 (en) 2011-04-01 2015-04-07 The Boeing Company Landing gear system
US10337631B1 (en) * 2018-10-17 2019-07-02 Altec Industries, Inc. System and method for automatic shutoff of a hydraulic fluid flow in the event of a loss in pressure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649773A (en) * 1946-03-27 1953-08-25 Donald G Griswold Differential pressure operated valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237664A (en) * 1989-10-05 1991-05-08 Plessis Jacobus Nicolaas Du Safety valve arrangement
US5109884A (en) * 1989-10-05 1992-05-05 Stanley Gordon Safety valve arrangement

Also Published As

Publication number Publication date
US3568705A (en) 1971-03-09
DE2041213A1 (en) 1971-02-25
JPS4914806B1 (en) 1974-04-10
FR2058370B1 (en) 1973-01-12
FR2058370A1 (en) 1971-05-28

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