GB592949A - Hydraulic valve - Google Patents

Hydraulic valve

Info

Publication number
GB592949A
GB592949A GB2210044A GB2210044A GB592949A GB 592949 A GB592949 A GB 592949A GB 2210044 A GB2210044 A GB 2210044A GB 2210044 A GB2210044 A GB 2210044A GB 592949 A GB592949 A GB 592949A
Authority
GB
United Kingdom
Prior art keywords
pressure
fluid
check valve
cylinder
port
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
GB2210044A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB592949A publication Critical patent/GB592949A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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
    • 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
    • F16K2200/00—Details of valves
    • F16K2200/30—Spring arrangements
    • F16K2200/305—Constructional features of springs
    • F16K2200/3053—Helicoidal springs of variable pitch, diameter or spring rate
    • 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
    • Y10T137/7774—Supporting valve spring carried by supporting valve
    • 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]
    • Y10T137/7838—Plural
    • Y10T137/7842—Diverse types
    • 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
    • Y10T137/87016—Lost motion
    • Y10T137/8704—First valve actuates second valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Check Valves (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

592,949. Fluid - actuated valves. PAGE, H, E. Nov. 9, 1944, No. 22100. Convention date, Oct. 30, 1943. [Class 135] A hydraulic valve, for use particularly in hydraulic jacks, comprises a body. 5 having a fluid inlet port 10 leading from a pumping cylinder 8 to an inlet chamber 27, a pressure chamber 42 in communication with a work cylinder 9 via the port 11, a check valve 55 in the pressure chamber seating towards the inlet, an assembly of elements in the pressure chamber including the spring-loaded hollow main plunger 40 and the spring-loaded auxiliary plunger 50 exerting resilient seating pressure on the check valve and means, e.g. the shoulder 40a on the main plunger, responsive to pressure in the pressure chamber for reducing the seating pressure exerted on the check valve. If the piston 16 is fixed, downward movement of the piston 15 will trap fluid in the inlet chamber and force the body 5 downward, the partial vacuum created in the cylinder 9 being relieved by fluid from the reservoir R entering via the port, 12 and the poppet 65, so that the body 5 quickly contacts the work and encounters sufficient resistance to movement to cause the opening of the check valve. If the pressure inthe cylinder 9 becomes too high, the poppet 75 is unseated and the fluid is released via the ports 80, 12, to the reservoir. For effecting a slow release of pressure in the cylinder 9, the check valve 55 is unseated by the cam 90 and the port-obstructing member 32a, the fluid escaping via the poppet 30 and the passages 28 to the reservoir.
GB2210044A 1943-10-30 1944-11-09 Hydraulic valve Expired GB592949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50844443 US2445334A (en) 1943-10-30 1943-10-30 Hydraulic valve

Publications (1)

Publication Number Publication Date
GB592949A true GB592949A (en) 1947-10-03

Family

ID=24022778

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2210044A Expired GB592949A (en) 1943-10-30 1944-11-09 Hydraulic valve

Country Status (2)

Country Link
US (1) US2445334A (en)
GB (1) GB592949A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711632A (en) * 1949-01-12 1955-06-28 American Optical Corp Release-relief valve for adjustable chairs
US5782269A (en) * 1997-04-14 1998-07-21 Caterpillar Inc. Soft seal poppet type check valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US514394A (en) * 1894-02-06 Device for regulating and relieving pressure in water-pipes
US1236583A (en) * 1916-10-14 1917-08-14 Coleman J Manning Safety-valve.
US1480508A (en) * 1921-04-16 1924-01-08 Collis Leslie Alfred Construction of hydraulic lifting jacks
US1662922A (en) * 1925-12-21 1928-03-20 Moses J Helmer Hydraulic jack
US1994179A (en) * 1930-06-05 1935-03-12 Pennsylvania Pump & Compressor Cylinder relief valve for compressors
GB358692A (en) * 1930-09-18 1931-10-15 Tangyes Ltd Improvements in release valves of hydraulic or fluid pressure jacks
US2057088A (en) * 1933-02-20 1936-10-13 Galion Iron Works And Mfg Comp Fluid pressure controlling valve
GB499606A (en) * 1936-12-05 1939-01-26 Schweizerische Lokomotiv Improvements in or relating to pressure relief valves
US2309138A (en) * 1940-07-25 1943-01-26 Yale & Towne Mfg Co Lift truck

Also Published As

Publication number Publication date
US2445334A (en) 1948-07-20

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