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GB1115144A - Directional hydraulic control valve - Google Patents

Directional hydraulic control valve

Info

Publication number
GB1115144A
GB1115144A GB5225666A GB5225666A GB1115144A GB 1115144 A GB1115144 A GB 1115144A GB 5225666 A GB5225666 A GB 5225666A GB 5225666 A GB5225666 A GB 5225666A GB 1115144 A GB1115144 A GB 1115144A
Authority
GB
United Kingdom
Prior art keywords
valve
port
relief valve
path
fluid
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
GB5225666A
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.)
Racing Hydraulics & Machinery
Original Assignee
Racing Hydraulics & Machinery
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 Racing Hydraulics & Machinery filed Critical Racing Hydraulics & Machinery
Publication of GB1115144A publication Critical patent/GB1115144A/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
    • 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
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2617—Bypass or relief valve biased open
    • 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
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7769—Single acting fluid servo
    • Y10T137/777—Spring biased
    • 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
    • Y10T137/7771—Bi-directional flow valves

Landscapes

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

Abstract

1, 115, 144. Hydraulic control circuits. RACINE HYDRAULICS & MACHINERY Inc. Nov. 22, 1966 [Jan. 5, 1966], No. 52256/ 66. Heading F1P. The body 10 of a spool valve for controlling the supply of hydraulic fluid to an exhaust from opposite ends of a double-acting motor 19 has first and second axially spaced lateral flow paths 27, 70 extending from the valve bore 11 to control parts 16,13 and each flow path 25, 70 has two parallel branches 27, 35 and 71, 75 of which branches 27, 71 have check valves 29, 72 opening towards its associated control port 16,15 and each branch 35, 75 has a relief valve 40, 76 which is spring-loaded to its closed postion towards its associated control port but which is opened by fluid pressure admitted to the cylinder space behind a piston 51, 80 integral with the relief valve poppet 41 from the flow path 25 or 70 not associated with the relief valve being opened. In operation and on moving the valve spool 90 to the left pressure fluid admitted to a part 12 flows through path 25, branch 27, past valve 29 and through port 16 to the underside of motor piston whilst exhause fluid from the other side of the motor piston flows through port 15, branch 75, past relief valve 76 which is held open by supply pressure admitted from path 25 through passage 77 and through path 70 to an axhaust port 13. On returning the valve spool 90 to neutral, paths 25, 70 are connected to exhaust ports 13, 14 respectively and relief valve 76 closes but may open momentarily to relieve a shock pressure in the motor.
GB5225666A 1966-01-05 1966-11-22 Directional hydraulic control valve Expired GB1115144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51888066A 1966-01-05 1966-01-05

Publications (1)

Publication Number Publication Date
GB1115144A true GB1115144A (en) 1968-05-29

Family

ID=24065882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5225666A Expired GB1115144A (en) 1966-01-05 1966-11-22 Directional hydraulic control valve

Country Status (2)

Country Link
US (1) US3472261A (en)
GB (1) GB1115144A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576192A (en) * 1969-11-10 1971-04-27 Capilano Engineering Co Ltd Hydraulic uniflow control unit
US3613711A (en) * 1969-12-23 1971-10-19 Koehring Co Fluid motor control mechanism
US3665810A (en) * 1970-01-14 1972-05-30 Koehring Co Differential pressure holding valve
US3630218A (en) * 1970-03-20 1971-12-28 Koehring Co Holding valve
US3613508A (en) * 1970-07-27 1971-10-19 Cessna Aircraft Co Hydraulic valve
GB1407801A (en) * 1971-10-28 1975-09-24 Dowty Mining Equipment Ltd Hydraulic apparatus
BE792619A (en) * 1971-12-13 1973-06-12 Caterpillar Tractor Co Fluid motor control circuit having means for counteracting runaway.
GB1394929A (en) * 1973-06-18 1975-05-21 Capilano Eng Co Ltd Hydraulic direction-control valve
US4172582A (en) * 1977-04-21 1979-10-30 Rexnord Inc. Reverse differential holding valve
US4170246A (en) * 1977-05-23 1979-10-09 Sta-Rite Industries, Inc. Pilot operator valve
JPS57144344A (en) * 1981-03-02 1982-09-06 Hitachi Constr Mach Co Ltd Flushing valve
DE3126226A1 (en) * 1981-07-03 1983-01-20 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen HYDROSTATIC STEERING DEVICE
US4919166A (en) * 1988-07-05 1990-04-24 Sims Anthony M Two-way flow valve
JPH081202B2 (en) * 1989-04-03 1996-01-10 株式会社豊田自動織機製作所 Operating circuit of single-acting hydraulic cylinder
DE69911674T2 (en) * 1998-03-11 2004-07-01 Poclain Hydraulics Industrie Valve device for a hydraulic motor for driving a mass of great inertia
JP2006283785A (en) * 2005-03-31 2006-10-19 Nabtesco Corp Hydraulic circuit and valve device thereof
US20080265199A1 (en) * 2007-04-24 2008-10-30 Sauer-Danfoss Inc. Zero leakage balance valve system
KR100915206B1 (en) * 2007-09-20 2009-09-02 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 double check valve with floating function
US20100090143A1 (en) * 2008-08-28 2010-04-15 Kot Norbert J Dual locking valve
ITMO20110175A1 (en) * 2011-07-19 2013-01-20 Atlantic Fluid Tech S R L LOAD DISPLACEMENT VALVE
US9611871B2 (en) 2013-09-13 2017-04-04 Norbert J. Kot Pneumatic valve assembly and method
JP6338428B2 (en) * 2014-04-11 2018-06-06 Ｋｙｂ株式会社 Valve structure
US12085099B1 (en) * 2020-06-18 2024-09-10 Vacuworx Global, LLC Flow control block for use with a vacuum material handler

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2286880A (en) * 1940-07-05 1942-06-16 Blackhawk Mfg Co Hydraulic control system
SU116799A1 (en) * 1957-02-08 1957-11-30 И.М. Кауфман The drive of a power hydraulic cylinder with the single-rod piston
US3129645A (en) * 1962-05-02 1964-04-21 Double A Prod Co Electrically modulated fluid valve
US3272085A (en) * 1963-11-19 1966-09-13 Parker Hannifin Corp Fluid system and valve assembly therefor
US3299903A (en) * 1964-03-26 1967-01-24 Parker Hannifin Corp Fluid system and valve assembly therefor
US3266381A (en) * 1964-12-14 1966-08-16 Gen Motors Corp Control valve for vehicle closure operator system
US3273467A (en) * 1965-01-26 1966-09-20 Fawick Corp Hydraulic system

Also Published As

Publication number Publication date
US3472261A (en) 1969-10-14

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