GB1207027A - Valve combinations for hydraulic systems - Google Patents

Valve combinations for hydraulic systems

Info

Publication number
GB1207027A
GB1207027A GB46805/68A GB4680568A GB1207027A GB 1207027 A GB1207027 A GB 1207027A GB 46805/68 A GB46805/68 A GB 46805/68A GB 4680568 A GB4680568 A GB 4680568A GB 1207027 A GB1207027 A GB 1207027A
Authority
GB
United Kingdom
Prior art keywords
pressure
cylinder
return pipe
valve
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
GB46805/68A
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of GB1207027A publication Critical patent/GB1207027A/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
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • 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
    • Y10T137/2564—Plural inflows
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)
  • Safety Valves (AREA)

Abstract

1,207,027. Hydraulic relief valve. DANFOSS A.S. Oct. 2, 1968 [Oct.17, 1967], No.46805/68. Heading F1P. A double acting piston device (13) Fig.1 (not shown) has two parallel one way valves (18 and 19, 20 and 21) across each side and a fluid return pipe one operative to relieve excess pressure to this pipe, the other allowing fluid to flow into the cylinder if cavitation take place. An additional valve (22, 23, 24) vents the cylinder only if the combined pressure in each end exceeds a maximum set lower than the over pressure relief limit. A combination drive is symmetrically arranged, the pressure pipes from each side of the cylinder communicating at 15, 16 respectively and the return pipe to the reservoir joining at 17. On excess pressure piston 27 or 28 respectively retracts to a stop 29 and further pressure causes valve 32 or 33 to open against a strong spring 34 or 35. Low-pressure causes ball 42 or 43 to lift off its seating and admit fluid to the cylinder. If the combined pressure of the two parts of the cylinders exceeds the set maximum, both pistons 27, 28 will retract and eventually push rod 49 will engage balls 42, 43 and push them off their seating thus venting the system to the return pipe.
GB46805/68A 1967-10-17 1968-10-02 Valve combinations for hydraulic systems Expired GB1207027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671650352 DE1650352B2 (en) 1967-10-17 1967-10-17 VALVE COMBINATION FOR HYDRAULIC SYSTEMS

Publications (1)

Publication Number Publication Date
GB1207027A true GB1207027A (en) 1970-09-30

Family

ID=5684832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46805/68A Expired GB1207027A (en) 1967-10-17 1968-10-02 Valve combinations for hydraulic systems

Country Status (10)

Country Link
US (1) US3550611A (en)
AT (1) AT288806B (en)
CH (1) CH478347A (en)
DE (1) DE1650352B2 (en)
DK (1) DK126870B (en)
ES (1) ES359167A1 (en)
FR (1) FR1589551A (en)
GB (1) GB1207027A (en)
NL (1) NL157690B (en)
SE (1) SE340224B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134187A (en) * 1982-12-03 1984-08-08 Orenstein & Koppel Ag Hydraulic circuit for adjusting on operating cylinder of excavating equipment

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492941A1 (en) * 1980-10-29 1982-04-30 Renault DIFFERENTIAL PRESSURE LIMITING DEVICE WITH VALVES
US4405030A (en) * 1981-03-16 1983-09-20 Deere & Company Steering system and compensating valve
US4463775A (en) * 1983-03-23 1984-08-07 Deere & Company Compensating valve
US4993921A (en) * 1989-04-21 1991-02-19 Vickers, Incorporated Power transmission
US6318400B1 (en) 1999-12-01 2001-11-20 Gilmore Valve Company Low interflow hydraulic shuttle valve
US6257268B1 (en) 1999-12-01 2001-07-10 Gilmore Valve Company Pressure biased shuttle valve
ES1047694Y (en) * 2000-11-23 2001-09-16 Aguirre Juan Fierro DEVICE FOR REDUCING CONTAMINANT COMPONENTS IN EXHAUST GASES OF COMBUSTION ENGINES.
US6655405B2 (en) 2001-01-31 2003-12-02 Cilmore Valve Co. BOP operating system with quick dump valve
CA2659165C (en) * 2007-06-30 2013-12-24 Festo Ag & Co. Kg A valve with an and function
US8397742B2 (en) * 2008-12-20 2013-03-19 Dtl Technologies, L.P. Shuttle valve
US9638341B1 (en) * 2014-05-16 2017-05-02 Hydro-Gear Limited Partnersip Loop flushing valve
US10344890B2 (en) 2017-02-21 2019-07-09 The Boeing Company Shuttle valve with damping

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134187A (en) * 1982-12-03 1984-08-08 Orenstein & Koppel Ag Hydraulic circuit for adjusting on operating cylinder of excavating equipment

Also Published As

Publication number Publication date
ES359167A1 (en) 1970-05-16
NL6814274A (en) 1969-04-21
CH478347A (en) 1969-09-15
FR1589551A (en) 1970-03-31
AT288806B (en) 1971-03-25
US3550611A (en) 1970-12-29
DK126870B (en) 1973-08-27
DE1650352A1 (en) 1970-09-17
NL157690B (en) 1978-08-15
DE1650352B2 (en) 1971-08-12
SE340224B (en) 1971-11-08

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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