FR2386710A1 - Perfectionnements aux installations de commande pour moteurs hydrauliques - Google Patents

Perfectionnements aux installations de commande pour moteurs hydrauliques

Info

Publication number
FR2386710A1
FR2386710A1 FR7801396A FR7801396A FR2386710A1 FR 2386710 A1 FR2386710 A1 FR 2386710A1 FR 7801396 A FR7801396 A FR 7801396A FR 7801396 A FR7801396 A FR 7801396A FR 2386710 A1 FR2386710 A1 FR 2386710A1
Authority
FR
France
Prior art keywords
control systems
hydraulic motors
hydraulic
float
neutral
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.)
Granted
Application number
FR7801396A
Other languages
English (en)
Other versions
FR2386710B1 (fr
Inventor
Lloyd Dean Finley
Leroy Francis Kusper
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 FR2386710A1 publication Critical patent/FR2386710A1/fr
Application granted granted Critical
Publication of FR2386710B1 publication Critical patent/FR2386710B1/fr
Granted 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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • 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
    • Y10T137/87233—Biased exhaust valve
    • Y10T137/87241—Biased closed

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

a. Perfectionnements aux installations de commande pour moteurs hydrauliques. b. Ces perfectionnements permettent à un moteur hydraulique d'operer dans différentes positions, notamment, dans une position << neutre >> (ou de maintien), de << flottement >>, de << levage >> ou de << descente >>. c. Concerne, notamment, les circuits hydrauliques des engins de travaux publics.
FR7801396A 1977-04-07 1978-01-18 Perfectionnements aux installations de commande pour moteurs hydrauliques Granted FR2386710A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/785,628 US4130049A (en) 1977-04-07 1977-04-07 Vent control for cylinder mounted load check valves

Publications (2)

Publication Number Publication Date
FR2386710A1 true FR2386710A1 (fr) 1978-11-03
FR2386710B1 FR2386710B1 (fr) 1981-10-23

Family

ID=25136107

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801396A Granted FR2386710A1 (fr) 1977-04-07 1978-01-18 Perfectionnements aux installations de commande pour moteurs hydrauliques

Country Status (6)

Country Link
US (1) US4130049A (fr)
JP (1) JPS53125575A (fr)
BE (1) BE864536A (fr)
CA (1) CA1047367A (fr)
FR (1) FR2386710A1 (fr)
SE (1) SE428048B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3778634B2 (ja) 1996-11-22 2006-05-24 Ｓｍｃ株式会社 パイロットチェック弁付スピードコントローラ
CN105134686B (zh) * 2015-10-26 2017-03-22 山西晋城无烟煤矿业集团有限责任公司 煤矿井下钻杆用液压调速阀以及三马达调速系统
CN108869433B (zh) * 2018-07-03 2020-04-21 赵德朝 一种增大液压破碎锤打击力的换向阀

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR995278A (fr) * 1948-09-17 1951-11-29 Ford Mécanisme de commande pour instruments agricoles et instruments agricoles munis de ce mécanisme
US3049101A (en) * 1961-04-03 1962-08-14 New York Air Brake Co Hydraulic mechanism
FR2259264A2 (fr) * 1972-04-17 1975-08-22 Caterpillar Tractor Co

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420256A (en) * 1913-02-25 1922-06-20 Jr John Hays Hammond System of teledynamic control
US3127688A (en) * 1962-12-26 1964-04-07 Caterpillar Tractor Co Hydraulic circuit for control of earthmoving scraper bowls
US3274902A (en) * 1965-10-22 1966-09-27 Deere & Co Hydraulic control system
US3523490A (en) * 1968-03-28 1970-08-11 Caterpillar Tractor Co Anti-cavitation mechanism for fluid driven systems
US3800670A (en) * 1969-10-21 1974-04-02 Caterpillar Tractor Co High pressure implement hydraulic circuit
US3795255A (en) * 1972-01-10 1974-03-05 Parker Hannifin Corp Load control and holding valve
US4006667A (en) * 1972-04-17 1977-02-08 Caterpillar Tractor Co. Hydraulic control system for load supporting hydraulic motors
US3788401A (en) * 1972-07-17 1974-01-29 Caterpillar Tractor Co Hydraulic circuit with valve to provide semi-float control of a dozer blade
US3908515A (en) * 1973-09-10 1975-09-30 Caterpillar Tractor Co Hydraulic circuit with selectively actuatable float control
US4018350A (en) * 1975-03-17 1977-04-19 Pettibone Corporation Hydraulic cyliner systems with safeguarded float action

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR995278A (fr) * 1948-09-17 1951-11-29 Ford Mécanisme de commande pour instruments agricoles et instruments agricoles munis de ce mécanisme
US3049101A (en) * 1961-04-03 1962-08-14 New York Air Brake Co Hydraulic mechanism
FR2259264A2 (fr) * 1972-04-17 1975-08-22 Caterpillar Tractor Co

Also Published As

Publication number Publication date
US4130049A (en) 1978-12-19
BE864536A (fr) 1978-09-04
FR2386710B1 (fr) 1981-10-23
SE7802549L (sv) 1978-10-08
CA1047367A (fr) 1979-01-30
SE428048B (sv) 1983-05-30
JPS53125575A (en) 1978-11-01

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Legal Events

Date Code Title Description
ST Notification of lapse