FR2132013B1 - - Google Patents

Info

Publication number
FR2132013B1
FR2132013B1 FR7208804A FR7208804A FR2132013B1 FR 2132013 B1 FR2132013 B1 FR 2132013B1 FR 7208804 A FR7208804 A FR 7208804A FR 7208804 A FR7208804 A FR 7208804A FR 2132013 B1 FR2132013 B1 FR 2132013B1
Authority
FR
France
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
FR7208804A
Other languages
French (fr)
Other versions
FR2132013A1 (en
Inventor
L F Berg
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 FR2132013A1 publication Critical patent/FR2132013A1/fr
Application granted granted Critical
Publication of FR2132013B1 publication Critical patent/FR2132013B1/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
FR7208804A 1971-03-29 1972-03-14 Expired FR2132013B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12882271A 1971-03-29 1971-03-29

Publications (2)

Publication Number Publication Date
FR2132013A1 FR2132013A1 (en) 1972-11-17
FR2132013B1 true FR2132013B1 (en) 1978-02-10

Family

ID=22437141

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7208804A Expired FR2132013B1 (en) 1971-03-29 1972-03-14

Country Status (10)

Country Link
US (1) US3704650A (en)
JP (1) JPS5521208B1 (en)
AU (1) AU460377B2 (en)
BE (1) BE779391A (en)
CA (1) CA940014A (en)
DE (1) DE2214032A1 (en)
FR (1) FR2132013B1 (en)
GB (1) GB1342548A (en)
IT (1) IT948664B (en)
SE (1) SE374949B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964370A (en) * 1974-07-15 1976-06-22 Parker-Hannifin Corporation Cushioning means for hydraulic cylinder
US3913451A (en) * 1974-08-30 1975-10-21 Cincinnati Milacron Inc Hydraulic cylinder with cushioning means
US4006666A (en) * 1975-05-22 1977-02-08 Towmotor Corporation Cushioning device for a hydraulic jack
US4033235A (en) * 1976-01-26 1977-07-05 Caterpillar Tractor Co. Fluid operated ram
US4064788A (en) * 1976-07-29 1977-12-27 Parker-Hannifin Corporation Cushioning means for hydraulic cylinder
US4386555A (en) * 1979-02-09 1983-06-07 Sperry Corporation Hydraulic cylinder cushion device
US4424737A (en) * 1980-03-26 1984-01-10 Kabushiki Kaisha Komatsu Seisakusho Stroke cushioning apparatus for hydraulic cylinders
EP0068495B1 (en) * 1981-06-30 1986-03-12 Hitachi Construction Machinery Co., Ltd. Shock absorbing device for hydraulic cylinder
US4517878A (en) * 1981-10-20 1985-05-21 Hitachi Construction Machinery Co., Ltd. Shock absorbing device for hydraulic cylinder
AU1164083A (en) * 1982-02-11 1983-08-18 Sperry Ltd. Control valve for a fluid operated piston-cylinder assembly
US6386088B1 (en) * 1998-05-29 2002-05-14 Hitachi Construction Machinery, Co. Ltd. Hydraulic cylinder
DE19836422C2 (en) * 1998-08-12 2002-10-24 Mannesmann Rexroth Ag Pressure operated cylinder
GB9910257D0 (en) * 1999-05-05 1999-06-30 Lucas Ind Plc Piston and cylinder assembly and flow restrictor device therefor
US7121185B2 (en) * 2004-05-28 2006-10-17 Caterpillar Inc. Hydraulic cylinder having a snubbing valve
ITTO20050043A1 (en) * 2005-01-27 2006-07-28 Enzo Gusella ACTUATOR DEVICE, IN PARTICULAR FOR A OCTOPUS BUCKET.
JP4851992B2 (en) * 2007-05-22 2012-01-11 カヤバ工業株式会社 Cushion ring and fluid pressure cylinder
US10151333B2 (en) * 2013-02-13 2018-12-11 Safran Landing Systems Canada Inc./ Safran Systèmes d'Atterrissage Canada Inc. Modular actuator with snubbing arrangement
CA3142307A1 (en) * 2019-05-31 2020-12-03 Hydra Dyne Technology Inc. Stroke cushioning in piston and cylinder devices
US11067104B1 (en) * 2020-11-16 2021-07-20 Caterpillar Inc. Integrated cylinder piston and bearing as a hydraulic cushion
US11319972B1 (en) * 2021-05-11 2022-05-03 Caterpillar Inc. Hydraulic cylinder snubbing retention arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493602A (en) * 1947-12-31 1950-01-03 Vance C Sterrett Pressure fluid motor
US2642845A (en) * 1950-12-20 1953-06-23 Westinghouse Air Brake Co Piston cushioning apparatus
US2704996A (en) * 1952-07-17 1955-03-29 Hannifin Corp Fluid operated cylinder with adjustable cushion

Also Published As

Publication number Publication date
US3704650A (en) 1972-12-05
AU3775372A (en) 1973-07-12
CA940014A (en) 1974-01-15
JPS5521208B1 (en) 1980-06-07
IT948664B (en) 1973-06-11
DE2214032A1 (en) 1972-10-12
GB1342548A (en) 1974-01-03
AU460377B2 (en) 1975-04-24
BE779391A (en) 1972-08-16
FR2132013A1 (en) 1972-11-17
SE374949B (en) 1975-03-24

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse