GB1197483A - Overridable Check Valve Mechanism - Google Patents

Overridable Check Valve Mechanism

Info

Publication number
GB1197483A
GB1197483A GB44369/67A GB4436967A GB1197483A GB 1197483 A GB1197483 A GB 1197483A GB 44369/67 A GB44369/67 A GB 44369/67A GB 4436967 A GB4436967 A GB 4436967A GB 1197483 A GB1197483 A GB 1197483A
Authority
GB
United Kingdom
Prior art keywords
valve
check valve
motor
overridable
reservoir
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
GB44369/67A
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 GB1197483A publication Critical patent/GB1197483A/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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7777—Both valves spring biased

Abstract

1,197,483. Valves. CATERPILLAR TRACTOR CO. 29 Sept., 1967 [21 Oct., 1966], No. 44369/67. Heading F2V. [Also in Division E1] An overridable check valve mechanism 12 in combination with a fluid driven motor M, e.g. driving the elevator of a self-loading earth scraper, which may be subjected to an external reversing force that can be blocked when it is below a predetermined magnitude, comprises a first check valve 34 defining a first unidirectional flow passage from a pump P to the motor, a second check valve 46 defining an oppositely directed unidirectional flow passage from the motor, and biasing means, e.g. a spring 53, holding the second valve closed when the reversing pressure at the motor is below the predetermined magnitude. Check valve 34 is formed by a piston 36 having flow passages 43, and loaded by a spring 39 on to a step 33. Valve 46 is carried by the valve 34, and comprises a ball closure 52. A relief valve 56 connects the system with a reservoir 17, and is set to open at a higher pressure than valve 46. An isolating valve 22 controls flow from the pump P directly back to a reservoir 17.
GB44369/67A 1966-10-21 1967-09-29 Overridable Check Valve Mechanism Expired GB1197483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US588542A US3392633A (en) 1966-10-21 1966-10-21 Overridable check valve mechanism

Publications (1)

Publication Number Publication Date
GB1197483A true GB1197483A (en) 1970-07-08

Family

ID=24354269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44369/67A Expired GB1197483A (en) 1966-10-21 1967-09-29 Overridable Check Valve Mechanism

Country Status (3)

Country Link
US (1) US3392633A (en)
DE (1) DE1650332A1 (en)
GB (1) GB1197483A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153050A (en) * 1984-01-23 1985-08-14 Royal Ordnance Plc Valve
EP0505349A2 (en) * 1991-03-20 1992-09-23 HOERBIGER FLUIDTECHNIK GmbH Hydraulic actuator
CN112797224A (en) * 2020-12-30 2021-05-14 四川红华实业有限公司 Method for recovering self-checking working state of VAT electric regulating valve

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2331282C3 (en) * 1973-06-15 1978-04-20 Aeg-Kanis Turbinenfabrik Gmbh, 8500 Nuernberg Device for speed control
US3896845A (en) * 1974-06-13 1975-07-29 Gen Motors Corp Accumulator charging and relief valve
US4390214A (en) * 1980-03-07 1983-06-28 Dayco Corporation Crawler track structure having wear surface
IT1161583B (en) * 1983-02-25 1987-03-18 Same Spa IMPROVEMENTS IN HYDRAULIC POWER SUPPLY CIRCUITS
US4673051A (en) * 1986-03-10 1987-06-16 General Motors Corporation Power steering gear with two-way check valve
JP3773768B2 (en) * 2000-08-30 2006-05-10 株式会社ジェイテクト Damper valve and hydraulic power steering device using the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US577489A (en) * 1897-02-23 Mortimer b
FR585450A (en) * 1924-09-04 1925-02-28 Ets De Dion Bouton Brake or clutch control device using pressurized oil
US1994974A (en) * 1930-06-21 1935-03-19 Oilgear Co Differential resistance valve
US2151057A (en) * 1936-10-07 1939-03-21 Suth Jack Well drilling machine
US3153423A (en) * 1962-05-16 1964-10-20 Sealol Two way check valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153050A (en) * 1984-01-23 1985-08-14 Royal Ordnance Plc Valve
EP0505349A2 (en) * 1991-03-20 1992-09-23 HOERBIGER FLUIDTECHNIK GmbH Hydraulic actuator
EP0505349A3 (en) * 1991-03-20 1993-03-03 Hoerbiger Fluidtechnik Gmbh Hydraulic actuator
AT402334B (en) * 1991-03-20 1997-04-25 Hoerbiger Gmbh HYDRAULIC CYLINDER / PISTON ARRANGEMENT
CN112797224A (en) * 2020-12-30 2021-05-14 四川红华实业有限公司 Method for recovering self-checking working state of VAT electric regulating valve

Also Published As

Publication number Publication date
DE1650332A1 (en) 1971-01-21
US3392633A (en) 1968-07-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees