GB1414251A - Spool valve assemblies - Google Patents

Spool valve assemblies

Info

Publication number
GB1414251A
GB1414251A GB578773A GB578773A GB1414251A GB 1414251 A GB1414251 A GB 1414251A GB 578773 A GB578773 A GB 578773A GB 578773 A GB578773 A GB 578773A GB 1414251 A GB1414251 A GB 1414251A
Authority
GB
United Kingdom
Prior art keywords
ports
spool
port
work
groove
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
GB578773A
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.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin Corp
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 Parker Hannifin Corp filed Critical Parker Hannifin Corp
Publication of GB1414251A publication Critical patent/GB1414251A/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
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F15B13/0403—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves a secondary valve member sliding within the main spool, e.g. for regeneration flow
    • 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
    • Y10T137/86485—Line condition change responsive release of 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/86702—With internal flow passage
    • 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)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

1414251 Dozers PARKER-HANNIFIN CORP 6 Feb 1973 [17 Feb 1972] 5787/73 Heading E1F [Also in Division F2] In a spool valve for controlling the movements of a double-acting cylinder 8 actuating a bulldozer blade 21 the spool is provided with grooves 38, 40 which selectively communicate the work ports 16 with the inlet ports 14 and the outlet ports 17. When the groove 38 communicates the lower work port with the inlet in a lower position of the spool two passages in the spool communicate the upper work port with the upper outlet port 17 and the inlet port. The two passages are formed respectively by ports 25, passage 26, relief valve 23 and ports 27, 28 and by ports 25, bore 35, check valve 32 and ports 36. The groove 40 and a groove 41 communicate the two work ports with the outlet ports in a "float" position of the spool.
GB578773A 1972-02-17 1973-02-06 Spool valve assemblies Expired GB1414251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22721272A 1972-02-17 1972-02-17

Publications (1)

Publication Number Publication Date
GB1414251A true GB1414251A (en) 1975-11-19

Family

ID=22852216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB578773A Expired GB1414251A (en) 1972-02-17 1973-02-06 Spool valve assemblies

Country Status (3)

Country Link
US (1) US3776273A (en)
DE (1) DE2307294A1 (en)
GB (1) GB1414251A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140130A (en) * 1983-05-18 1984-11-21 Joy Mfg Co Improvements in or relating to a hydraulic valve
GB2149889A (en) * 1980-08-13 1985-06-19 Commercial Shearing A combination check and relief valve
EP2230408A3 (en) * 2009-03-18 2014-02-19 Nabtesco Corporation Valve unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135298A1 (en) * 2001-07-24 2003-02-13 Bosch Rexroth Ag valve assembly
DE10300974A1 (en) * 2003-01-14 2004-07-22 Hydraulik-Ring Gmbh Proportional solenoid valve of a camshaft adjustment device for motor vehicles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949097A (en) * 1957-12-11 1960-08-16 New York Air Brake Co Five position control valve having power float position
US3006372A (en) * 1959-04-22 1961-10-31 New York Air Brake Co Control valve with cavitation-minimizing replenishing circuit
US3132668A (en) * 1961-02-13 1964-05-12 Parker Hannifin Corp Detent release for flow control valves
US3106065A (en) * 1961-02-13 1963-10-08 Parker Hannifin Corp Position hold and release mechanisms for flow control valves
US3160174A (en) * 1961-03-28 1964-12-08 Parker Hannifin Corp Remote power shift circuits for spool valves and the like
US3506031A (en) * 1967-10-06 1970-04-14 Parker Hannifin Corp Relief-makeup check assembly for directional control valves

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149889A (en) * 1980-08-13 1985-06-19 Commercial Shearing A combination check and relief valve
GB2140130A (en) * 1983-05-18 1984-11-21 Joy Mfg Co Improvements in or relating to a hydraulic valve
EP2230408A3 (en) * 2009-03-18 2014-02-19 Nabtesco Corporation Valve unit

Also Published As

Publication number Publication date
US3776273A (en) 1973-12-04
DE2307294A1 (en) 1973-08-30

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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