GB1082140A - Improved hydraulic actuator - Google Patents

Improved hydraulic actuator

Info

Publication number
GB1082140A
GB1082140A GB16044/66A GB1604466A GB1082140A GB 1082140 A GB1082140 A GB 1082140A GB 16044/66 A GB16044/66 A GB 16044/66A GB 1604466 A GB1604466 A GB 1604466A GB 1082140 A GB1082140 A GB 1082140A
Authority
GB
United Kingdom
Prior art keywords
ports
piston
fitting
cylinder
grooves
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
GB16044/66A
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.)
Cessna Aircraft Co
Original Assignee
Cessna Aircraft 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 Cessna Aircraft Co filed Critical Cessna Aircraft Co
Publication of GB1082140A publication Critical patent/GB1082140A/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/003—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with multiple outputs
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/06—Details
    • F15B7/08—Input units; Master units
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/06—Details
    • F15B7/10—Compensation of the liquid content in a system

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

1,082,140. Hydraulic actuators. CESSNA AIRCRAFT CO. April 12, 1966 [Nov. 22, 1965], No. 16044/66. Heading F1P. A hydraulic actuator comprises a piston 19 slidable in a cylinder 10 between abutments 14, 18 and having a cylinder seal 29 disposed between grooves 32, 33 so that when the piston is in either of its end positions the grooves align with cylinder ports 20, 22 or 21, 23 to provide restricted communication between chambers 36, 37 on opposite sides of the piston 19. The cylinder ports 20, 22 communicate through a fitting 24 connected by a line 44 and changeover valve 46 to a pump 45 or a reservoir 49. If the fitting 24 is connected to the pump 45 the piston moves away from ports 20, 22 and expels liquid through the ports 21, 23 into a fitting 25 connected by a conduit 12 to the inlet 38 of a slave cylinder 11 or to the fitting 24 of a second actuator. At the end of the piston stroke the grooves 32, 33 align with the ports 23, 21 whereby liquid can pass from chamber 36 to fitting 25 to ensure complete extension of the slave piston 40 if leakage of liquid has previously prevented complete extension. Check valves in the form of washers located in the fittings 24, 25 and covering the ports 22, 23 may be provided for preventing uneven extension or contraction in the event of the loads on the actuator and slave cylinder being very unequal.
GB16044/66A 1965-11-22 1966-04-12 Improved hydraulic actuator Expired GB1082140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US509113A US3347043A (en) 1965-11-22 1965-11-22 Master cylinder construction affording automatic re-phasing of master and slave cylinders

Publications (1)

Publication Number Publication Date
GB1082140A true GB1082140A (en) 1967-09-06

Family

ID=24025315

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16044/66A Expired GB1082140A (en) 1965-11-22 1966-04-12 Improved hydraulic actuator

Country Status (4)

Country Link
US (1) US3347043A (en)
DE (1) DE1550709A1 (en)
GB (1) GB1082140A (en)
SE (1) SE324106B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE28695E (en) * 1965-11-22 1976-01-27 The Cessna Aircraft Company Master cylinder construction affording automatic re-phasing of master and slavecylinders
US3475904A (en) * 1967-06-26 1969-11-04 Penn Controls Heat motor utilizing expansible fluid for driving a piston
US3462986A (en) * 1967-10-26 1969-08-26 Rockwell Standard Co Brake actuator
US3650182A (en) * 1969-09-17 1972-03-21 Cessna Aircraft Co Closure for fluid pressure vessel
US3665816A (en) * 1970-11-10 1972-05-30 James C Caudle Power cylinder construction
DE2129292A1 (en) * 1971-06-12 1973-01-04 Bosch Gmbh Robert ACTUATION CYLINDER FOR A HYDRAULICALLY ACTUATED FRICTION CLUTCH
US3832852A (en) * 1972-10-20 1974-09-03 Cessna Aircraft Co Construction affording automatic synchronizing of master and slave fluid power cylinders
US4164122A (en) * 1977-09-19 1979-08-14 International Harvester Company Cylinder construction affording automatic re-phasing of master and slave cylinders
DE4208980A1 (en) * 1992-03-20 1993-09-23 Rexroth Mannesmann Gmbh HYDRAULIC DRIVE DEVICE WITH A CYLINDER
CA2345850C (en) * 2001-04-27 2005-04-26 Holland Equipment Limited Hydraulic platform lift incorporating positive displacement valve, and positive displacement valve for hydraulic platform lift
US7469648B2 (en) * 2006-08-31 2008-12-30 Cnh America, Llc Front fold planter lift and fold hydraulic control system
US11131330B1 (en) * 2020-03-30 2021-09-28 Caterpillar Inc. Crimp retained hydraulic cylinder head and cap

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312337A (en) * 1940-01-29 1943-03-02 Leigh E Hughes Hydraulic well pump
US2591793A (en) * 1945-11-28 1952-04-08 Dubois Maurice Odile Device for adjusting the return travel of fluid actuated means
US2539720A (en) * 1948-09-10 1951-01-30 John C Bender Fluid motor with valve disk and cushioning means
US2766590A (en) * 1951-10-18 1956-10-16 Ford Motor Co Fluid pressure system for motivating a reciprocating load
US2882685A (en) * 1956-07-02 1959-04-21 Gleason Works Hydraulic motion transmitting system
US2997849A (en) * 1959-05-28 1961-08-29 Outboard Marine Corp Self-purging hydraulic control device

Also Published As

Publication number Publication date
US3347043A (en) 1967-10-17
DE1550709A1 (en) 1970-09-17
SE324106B (en) 1970-05-19

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