GB1437200A - Dual check valve - Google Patents

Dual check valve

Info

Publication number
GB1437200A
GB1437200A GB5067975A GB5067975A GB1437200A GB 1437200 A GB1437200 A GB 1437200A GB 5067975 A GB5067975 A GB 5067975A GB 5067975 A GB5067975 A GB 5067975A GB 1437200 A GB1437200 A GB 1437200A
Authority
GB
United Kingdom
Prior art keywords
reservoir
check valve
spool
june
holes
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
GB5067975A
Other languages
English (en)
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 GB1437200A publication Critical patent/GB1437200A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Check Valves (AREA)
GB5067975A 1972-06-21 1973-06-11 Dual check valve Expired GB1437200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26496172A 1972-06-21 1972-06-21

Publications (1)

Publication Number Publication Date
GB1437200A true GB1437200A (en) 1976-05-26

Family

ID=23008381

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5067975A Expired GB1437200A (en) 1972-06-21 1973-06-11 Dual check valve
GB2761373A Expired GB1437199A (en) 1972-06-21 1973-06-11 Hydraulic control circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2761373A Expired GB1437199A (en) 1972-06-21 1973-06-11 Hydraulic control circuit

Country Status (4)

Country Link
US (1) US3779133A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5616282B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA971079A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB1437200A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978879A (en) * 1972-08-14 1976-09-07 Danfoss A/S Control means for hydrostatic steering systems and the like
JPS61262891A (ja) * 1985-05-15 1986-11-20 オムロン株式会社 ト−クン
JP2559619B2 (ja) * 1988-08-16 1996-12-04 株式会社小松製作所 操作弁装置
JP4782711B2 (ja) * 2007-02-21 2011-09-28 日立建機株式会社 方向制御弁装置およびこの方向制御弁装置を複数備えた方向制御弁装置ブロック

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1342338A (fr) * 1962-09-29 1963-11-08 Sigma Perfectionnements apportés aux dispositifs hydrauliques destinés au déplacement alternatif d'éléments à inertie élevée
US3345998A (en) * 1965-02-19 1967-10-10 Gianni A Dotto Safety check valve
US3415160A (en) * 1966-12-08 1968-12-10 Applied Power Ind Inc Multi-speed fluid translator
US3470792A (en) * 1967-08-02 1969-10-07 Cessna Aircraft Co Maximum pressure control apparatus for hydraulic actuators

Also Published As

Publication number Publication date
US3779133A (en) 1973-12-18
JPS4956085A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-05-30
CA971079A (en) 1975-07-15
JPS5616282B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-04-15
GB1437199A (en) 1976-05-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920611