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GB1275838A - Spring loaded non-return valve - Google Patents

Spring loaded non-return valve

Info

Publication number
GB1275838A
GB1275838A GB3257470A GB3257470A GB1275838A GB 1275838 A GB1275838 A GB 1275838A GB 3257470 A GB3257470 A GB 3257470A GB 3257470 A GB3257470 A GB 3257470A GB 1275838 A GB1275838 A GB 1275838A
Authority
GB
United Kingdom
Prior art keywords
piston
valve member
port
passages
supplied
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
GB3257470A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1275838A publication Critical patent/GB1275838A/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
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • 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
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
    • 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
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7876—With external means for opposing bias
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86928—Sequentially progressive opening or closing of plural valves
    • Y10T137/86936—Pressure equalizing or auxiliary shunt flow
    • Y10T137/86944—One valve seats against other valve [e.g., concentric valves]
    • Y10T137/86984—Actuator moves both valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Safety Valves (AREA)

Abstract

1275838 Valves ROBERT BOSCH GmbH 6 July 1970 [28 Aug 1969] 32574/70 Heading F2V Flow from port 11 to port 12 of the valve assembly shown, takes place when the supply pressure exceeds the loading of a spring 9 acting upon a main member 3, such loading being applied to the main valve member through to intermediary of a second valve member 7. However, when it is desired to control flow from port 12 to port 11, a pilot-pressure is supplied to the left-hand end of a piston 17 which then acts, through the intermediary of a stem 14, to first move the second valve member 7 off its seating on the main valve member 3, and then to move valve member 3 off its seating 4 formed within a cylindrical sleeve 2. Pilot pressure supplied to an annular channel 19 is communicated to the piston end initially through radial and axial piston passages 20 and 21. Subsequently, as the piston 17 moves to the right, radial passages 20 are moved out of communication with channel 19 and further radial passages 23, of a diameter less than that of passages 20, are brought into communication with channel 19. The arrangement permits the pilot pressure to be supplied to the piston end in a manner such that the pressure force acting on the piston end is decreased as the piston moves towards the end of its actuating stroke.
GB3257470A 1969-08-28 1970-07-06 Spring loaded non-return valve Expired GB1275838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1943693A DE1943693C3 (en) 1969-08-28 1969-08-28 Spring loaded check valve

Publications (1)

Publication Number Publication Date
GB1275838A true GB1275838A (en) 1972-05-24

Family

ID=5743981

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3257470A Expired GB1275838A (en) 1969-08-28 1970-07-06 Spring loaded non-return valve

Country Status (6)

Country Link
US (1) US3631887A (en)
AT (1) AT301974B (en)
CH (1) CH501175A (en)
DE (1) DE1943693C3 (en)
FR (1) FR2062158A5 (en)
GB (1) GB1275838A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000090A (en) * 1977-06-22 1979-01-04 Danfoss As Fluid-flow valve arrangement especially for steering gear
ITMI20112217A1 (en) * 2011-12-05 2013-06-06 Clippers S R L ANTI-THEFT DEVICE FOR VEHICLES

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2231910A1 (en) * 1973-06-04 1974-12-27 Griffet Ets M Control valve for hydraulic jack of crane jib - has piston operated by low pressure oil to control main oil flow
DE2410077C3 (en) * 1974-03-02 1981-06-04 Schloemann-Siemag AG, 4000 Düsseldorf Device for setting the flow cross-section in hydraulic valves
US3981479A (en) * 1974-06-14 1976-09-21 Snap-Tite, Inc. Check valve
US4009756A (en) * 1975-09-24 1977-03-01 Trw, Incorporated Method and apparatus for flooding of oil-bearing formations by downward inter-zone pumping
US4391293A (en) * 1980-12-18 1983-07-05 General Signal Corp. Packing for equalizing reservoir cut-out valve
US4391296A (en) * 1981-05-07 1983-07-05 Abbott John D By-pass pilot operated hydraulic check valve
US4484726A (en) * 1982-08-02 1984-11-27 Dresser Industries, Inc. Pulsation limiter for manually actuated hydraulic valve
DE3247420A1 (en) * 1982-12-22 1984-07-05 Mannesmann Rexroth GmbH, 8770 Lohr HYDRAULICALLY UNLOCKABLE CHECK VALVE
USRE34218E (en) 1983-09-02 1993-04-13 Easily-cleanable filters
US5255705A (en) * 1986-01-30 1993-10-26 Kabushiki Kaisha Komatsu Seisakusho Hydraulic pressure control system
US4978450A (en) 1986-02-11 1990-12-18 Mordeki Drori Filtering element
US5030347A (en) * 1987-07-30 1991-07-09 Mordeki Drori Multiple filter elements with movable flushing assembly
US5013461A (en) 1987-09-18 1991-05-07 Mordeki Drori Regeneration method of filter device having filter aid material and piston apparatus
US5015379A (en) 1988-03-16 1991-05-14 Mordeki Drori Coiled filter strip with upstream and downstream butt ends
IL88940A0 (en) 1989-01-12 1989-08-15 Drori Mordeki Filter apparatus
US4947672A (en) * 1989-04-03 1990-08-14 Burndy Corporation Hydraulic compression tool having an improved relief and release valve
US4967791A (en) * 1989-04-26 1990-11-06 The Boeing Company Pressure activated check valve
US5022427A (en) * 1990-03-02 1991-06-11 Otis Engineering Corporation Annular safety system for gas lift production
US5255712A (en) * 1992-10-28 1993-10-26 Foster Raymond K Check valve pull assembly
DE19813909B4 (en) * 1998-03-28 2007-02-15 Dbt Gmbh Hydraulically actuated non-return valve for the removal hydraulics in mining underground operations
DE10042716A1 (en) * 2000-08-31 2002-03-14 Mannesmann Rexroth Ag Unlockable check valve for very high system pressures
RU2314449C2 (en) * 2005-05-05 2008-01-10 Открытое акционерное общество Гаврилов-Ямский машиностроительный завод "Агат" Controllable check valve
CZ2006234A3 (en) * 2006-04-06 2007-10-17 Zaalex S. R. O. Hydraulically controlled check valve
DE102006045448A1 (en) * 2006-09-19 2008-03-27 Lechler Gmbh Check valve for injection device i.e. field syringe, has valve body designed and arranged in housing such that contact surface aligned in its position closing for free cross-section is null for counter pressure in counter pressure area
TWM315185U (en) * 2006-12-15 2007-07-11 Wei-Te Hsu Vehicular hydraulic tank reverse safety device
RU2413893C1 (en) * 2009-12-14 2011-03-10 Валерий Владимирович Бодров Controlled back valve
US9714556B2 (en) * 2013-11-08 2017-07-25 Baker Hughes Incorporated Shear seal check valve for use in wellbore fluid
RU2689956C1 (en) * 2018-03-27 2019-05-29 федеральное государственное автономное образовательное учреждение высшего образования "Северо-Кавказский федеральный университет" Automatic throttle
CN108644168A (en) * 2018-05-14 2018-10-12 江苏理工学院 Inside let out balanced type hydraulic control one-way valve
NO345243B1 (en) * 2019-07-03 2020-11-16 Petroleum Technology Co As A valve arrangement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US885459A (en) * 1907-05-22 1908-04-21 William B Engler Valve for gas-engines.
CH201066A (en) * 1937-10-26 1938-11-15 Escher Wyss Maschf Ag Hydraulic servo motor for actuating rotating closing elements.
US2810370A (en) * 1954-01-18 1957-10-22 Pathon Mfg Company Combined power cylinder and valve construction
DE1913154U (en) * 1964-08-31 1965-04-01 Bosch Gmbh Robert LOCKING BLOCK.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000090A (en) * 1977-06-22 1979-01-04 Danfoss As Fluid-flow valve arrangement especially for steering gear
GB2000090B (en) * 1977-06-22 1982-02-10 Danfoss As Improvements in and related to a fluid-flow valve arrangement especially for steering gear
ITMI20112217A1 (en) * 2011-12-05 2013-06-06 Clippers S R L ANTI-THEFT DEVICE FOR VEHICLES

Also Published As

Publication number Publication date
DE1943693B2 (en) 1977-03-10
DE1943693C3 (en) 1981-07-16
AT301974B (en) 1972-09-25
US3631887A (en) 1972-01-04
DE1943693A1 (en) 1971-03-11
CH501175A (en) 1970-12-31
FR2062158A5 (en) 1971-06-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee