GB1399446A - Hydraulic lock valve assembly - Google Patents

Hydraulic lock valve assembly

Info

Publication number
GB1399446A
GB1399446A GB1819674A GB1819674A GB1399446A GB 1399446 A GB1399446 A GB 1399446A GB 1819674 A GB1819674 A GB 1819674A GB 1819674 A GB1819674 A GB 1819674A GB 1399446 A GB1399446 A GB 1399446A
Authority
GB
United Kingdom
Prior art keywords
flow
valve assembly
disc
hydraulic lock
lock 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
GB1819674A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1399446A publication Critical patent/GB1399446A/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • 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
    • Y10T137/2544—Supply and exhaust type

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

1399446 Fluid regulation CATERPILLAR TRACTOR CO 25 April 1974 [30 April 1973] 18196/74 Heading G3H [Also in Division F2] A flow restrictor comprises an axially floating disc 29 having peripheral reliefs 31 and a central hole 32. When flow is in a first direction disc 29 abuts a first seat to permit substantially unrestricted flow through hole 32 and reliefs 31. When flow is in the opposite direction the disc abuts a smaller seat such that flow can only take place through hole 32.
GB1819674A 1973-04-30 1974-04-25 Hydraulic lock valve assembly Expired GB1399446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00355473A US3857404A (en) 1973-04-30 1973-04-30 Hydraulically operated lock valve assembly

Publications (1)

Publication Number Publication Date
GB1399446A true GB1399446A (en) 1975-07-02

Family

ID=23397543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1819674A Expired GB1399446A (en) 1973-04-30 1974-04-25 Hydraulic lock valve assembly

Country Status (6)

Country Link
US (1) US3857404A (en)
JP (1) JPS5750987B2 (en)
BE (1) BE814439A (en)
BR (1) BR7401841D0 (en)
CA (1) CA1001925A (en)
GB (1) GB1399446A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943968A (en) * 1975-01-06 1976-03-16 Parker-Hannifin Corporation Combination lock and relief valve for hydraulic systems
US4012031A (en) * 1975-03-25 1977-03-15 Affiliated Hospital Products, Inc. Lock valve flow control arrangement
US4103699A (en) * 1976-07-16 1978-08-01 Avon Enterprises, Inc. Fluid cylinder mounted lock out valve device
US4114516A (en) * 1976-10-15 1978-09-19 Caterpillar Tractor Co. Anti-cavitation and pressure modulating relief valve for controlling hydraulic cylinders
US4344287A (en) * 1979-08-23 1982-08-17 Caterpillar Tractor Co. Volume compensation for hydraulic circuits
US4286432A (en) * 1979-08-30 1981-09-01 Caterpillar Tractor Co. Lock valve with variable length piston and hydraulic system for a work implement using the same
US4341149A (en) * 1979-08-30 1982-07-27 Caterpillar Tractor Co. Selectively actuatable fluid control system for a work element
EP0050656B1 (en) * 1980-05-01 1985-06-26 The Boeing Company Integral hydraulic blocking and relief valve
US4461449A (en) * 1980-05-01 1984-07-24 The Boeing Company Integral hydraulic blocking and relief valve
US4667570A (en) * 1984-12-21 1987-05-26 The Boeing Company Integral hydraulic blocking and relief valve
JPH0310622Y2 (en) * 1985-04-30 1991-03-15
JPH0471801U (en) * 1990-10-26 1992-06-25
JP3617841B2 (en) * 1996-02-28 2005-02-09 ブーヘル・ヒドラウリクス・アクチェンゲゼルシャフト Load holding brake valve
JP3778634B2 (en) * 1996-11-22 2006-05-24 Ｓｍｃ株式会社 Speed controller with pilot check valve
DE19829232C1 (en) * 1998-06-30 2000-05-18 Weber Hydraulik Gmbh Bias check valve
US6116868A (en) * 1999-03-01 2000-09-12 Lu; Chung-Tai Multi-faceted valve head for hydraulic pump
KR100430398B1 (en) * 2000-12-26 2004-05-04 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 anti-drop device of construction equipment
ITGE20020064A1 (en) * 2002-07-16 2004-01-16 Ultraflex Spa HYDRAULIC PUMP FOR GUIDANCE SYSTEMS FOR BOATS
JP4618179B2 (en) * 2006-03-28 2011-01-26 トヨタ自動車株式会社 Flow control valve and belt type continuously variable transmission
CN114294280B (en) * 2021-12-26 2024-04-09 浙江海宏液压科技股份有限公司 Working valve plate and multi-way valve

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506008A (en) * 1947-01-17 1950-05-02 Bruno F Arps Hydraulic control valve
US2720755A (en) * 1952-09-04 1955-10-18 Vickers Inc Power transmission
US2691964A (en) * 1953-02-27 1954-10-19 Ford Motor Co Dual action hydraulic control valve
US2959190A (en) * 1957-02-25 1960-11-08 Bendix Corp Control valve having operating position hold
US3145734A (en) * 1961-10-06 1964-08-25 Borg Warner Pressure compensated flow control valve
US3198088A (en) * 1963-08-13 1965-08-03 Caterpillar Tractor Co Fluid motor control system
GB1050181A (en) * 1964-03-23 1900-01-01
US3563261A (en) * 1968-06-12 1971-02-16 Mcconnel F W Ltd Lockout valve assemblies for hydraulic control systems
US3587399A (en) * 1969-05-02 1971-06-28 Deere & Co Control valve means for a two-way hydraulic cylinder
US3648968A (en) * 1969-08-07 1972-03-14 Hamilton Co Fluid flow control mechanism

Also Published As

Publication number Publication date
BR7401841D0 (en) 1974-10-29
US3857404A (en) 1974-12-31
JPS5750987B2 (en) 1982-10-29
BE814439A (en) 1974-10-30
JPS501275A (en) 1975-01-08
CA1001925A (en) 1976-12-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930425