GB1071299A - Hydraulic jack - Google Patents

Hydraulic jack

Info

Publication number
GB1071299A
GB1071299A GB1909/66A GB190966A GB1071299A GB 1071299 A GB1071299 A GB 1071299A GB 1909/66 A GB1909/66 A GB 1909/66A GB 190966 A GB190966 A GB 190966A GB 1071299 A GB1071299 A GB 1071299A
Authority
GB
United Kingdom
Prior art keywords
valve
passages
chamber
rod
jan
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
GB1909/66A
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.)
RECH ETUDES PROD
Recherches Etudes Production REP SARL
Original Assignee
RECH ETUDES PROD
Recherches Etudes Production REP SARL
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 RECH ETUDES PROD, Recherches Etudes Production REP SARL filed Critical RECH ETUDES PROD
Publication of GB1071299A publication Critical patent/GB1071299A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • 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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same 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
    • Y10T137/86919—Sequentially closing and opening alternately seating flow controllers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Manipulator (AREA)

Abstract

1,071,299. Fluid pressure servomotor systems. RECHERCHES ETUDES PRODUCTION R.E.P. Jan. 14, 1966 [Jan. 19, 1965], No. 1909/66. Heading G3P. A hydraulic jack comprises a fixed piston 2 and a movable cylinder 1, the latter housing a hollow spool valve T which is slidable on a guide rod 5 under the control of a manual operating lever 4. In the neutral position shown, jack chambers 17, 19 communicate with exhaust port 24 via passages &c. 16, 14, 20 and 22 and 18, 15, 21 and 23 respectively. When valve T is moved to the right, grooves 15, 21 are cut off from each other and a shoulder 25 on rod 5 unseats a valve 12 which is one of a pair of such valves 11, 12 located in a chamber 8 in valve T, thereby admitting fluid from an inlet 10 to chamber 19 via chamber 8 and passages 7, 18. Consequent rightward movement of cylinder 1 reseats valve 12 and brings grooves 15, 21 back into communication with each other. A similar sequence occurs when valve T is moved to the left. A shoulder defined by diameters d2, d3 is provided at each end of rod 5 and the spaces 27, 28 there around communicate with passages 6, 7 via longitudinal passages 29, 30. These shoulders provide "feel" for the operator. A force providing "feel" is also generated on valves 11, 12.
GB1909/66A 1965-01-19 1966-01-14 Hydraulic jack Expired GB1071299A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2464A FR1433397A (en) 1965-01-19 1965-01-19 Hydraulic servo control

Publications (1)

Publication Number Publication Date
GB1071299A true GB1071299A (en) 1967-06-07

Family

ID=8568654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1909/66A Expired GB1071299A (en) 1965-01-19 1966-01-14 Hydraulic jack

Country Status (4)

Country Link
US (1) US3352210A (en)
DE (1) DE1576146B1 (en)
FR (1) FR1433397A (en)
GB (1) GB1071299A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561731A (en) * 1969-01-24 1971-02-09 William A Rogers Valve with improved seal assembly
DE2025664B2 (en) * 1970-05-26 1975-08-21 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Hydraulic booster control
DE2223995B2 (en) * 1972-05-17 1981-05-14 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic ram proportional control system - has variable throttle adjusted by ram piston
JPS5383234A (en) * 1976-12-28 1978-07-22 Atsugi Motor Parts Co Ltd Servo valve for booster of power steering system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR758143A (en) * 1933-07-07 1934-01-11 Freins Jourdain Monneret Power steering intended in particular for heavy motor vehicles
US2919681A (en) * 1955-06-13 1960-01-05 Bendix Aviat Corp Reaction limit control valve
DE1074421B (en) * 1956-07-18 1960-01-28 Bendix Aviation Corporation New York N Y (V St A) Distribution valve for a hydraulic servo system, especially for the steering of a motor vehicle
US2985146A (en) * 1957-01-03 1961-05-23 Hamill Markus Ind Inc Control valve adapted for vacuumpower steering use
FR1295534A (en) * 1961-04-27 1962-06-08 Rech Etudes Prod Hydraulic servo control
US3152610A (en) * 1961-09-11 1964-10-13 New York Air Brake Co Hydraulic device

Also Published As

Publication number Publication date
DE1576146B1 (en) 1970-09-10
US3352210A (en) 1967-11-14
FR1433397A (en) 1966-04-01

Similar Documents

Publication Publication Date Title
GB1078908A (en) Hydraulic control circuits
US2688314A (en) Arrangement of control valves
US2501328A (en) Valve unit
GB956312A (en) Improvements in hydraulic circuits and control valves
US3152610A (en) Hydraulic device
GB1494400A (en) Device for hydraulic control of a centered multiposition directional control valve
GB833172A (en) Improvements in or relating to fluid flow-control valves
GB1071299A (en) Hydraulic jack
US2952246A (en) Valve
GB964681A (en) Contral valve assembly having control valves operated by a pilot valve
GB950974A (en) Improvements relating to fluid motors
GB959622A (en) Hydraulic system
GB1062143A (en) Hydraulic control valve
GB965393A (en) Improvements in or relating to fluid pressure actuators for producing rotary motion
GB1197976A (en) Fluid Pressure Piston and Cylinder Type Motors
GB978113A (en) Improvements in or relating to fluid control valves
GB1332617A (en) Control slide valve for a hydraulic servo motor
US3985470A (en) Dual pressure hydraulic pump
US3108512A (en) Hydraulic jack of follow-up type
GB865422A (en) Improvements in or relating to hydraulic control valves
GB1512255A (en) Hydraulic machine control
GB794444A (en) Improvements in a pilot-type selector valve for hydraulic motors
GB1431793A (en) Servomechanisms
GB1085556A (en) Hydromechanical power transmission
GB953738A (en) Control slide valve