IT948664B - HYDRAULIC JACK - Google Patents
HYDRAULIC JACKInfo
- Publication number
- IT948664B IT948664B IT48447/72A IT4844772A IT948664B IT 948664 B IT948664 B IT 948664B IT 48447/72 A IT48447/72 A IT 48447/72A IT 4844772 A IT4844772 A IT 4844772A IT 948664 B IT948664 B IT 948664B
- Authority
- IT
- Italy
- Prior art keywords
- hydraulic jack
- jack
- hydraulic
- Prior art date
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12882271A | 1971-03-29 | 1971-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT948664B true IT948664B (en) | 1973-06-11 |
Family
ID=22437141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT48447/72A IT948664B (en) | 1971-03-29 | 1972-02-21 | HYDRAULIC JACK |
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)
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 |
DE3269801D1 (en) * | 1981-06-30 | 1986-04-17 | Hitachi Construction Machinery | 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 |
EP1001174A4 (en) * | 1998-05-29 | 2005-12-14 | Hitachi Construction Machinery | 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 |
CA2900787C (en) * | 2013-02-13 | 2020-02-25 | Messier-Dowty Inc. | Modular actuator with snubbing arrangement |
WO2020237344A1 (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)
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 |
-
1971
- 1971-03-29 US US128822A patent/US3704650A/en not_active Expired - Lifetime
-
1972
- 1972-01-04 CA CA131,595A patent/CA940014A/en not_active Expired
- 1972-01-10 AU AU37753/72A patent/AU460377B2/en not_active Expired
- 1972-01-24 GB GB331072A patent/GB1342548A/en not_active Expired
- 1972-02-15 BE BE779391A patent/BE779391A/en unknown
- 1972-02-21 IT IT48447/72A patent/IT948664B/en active
- 1972-03-14 FR FR7208804A patent/FR2132013B1/fr not_active Expired
- 1972-03-20 DE DE19722214032 patent/DE2214032A1/en not_active Withdrawn
- 1972-03-29 SE SE7204075A patent/SE374949B/xx unknown
- 1972-03-29 JP JP3153972A patent/JPS5521208B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
AU3775372A (en) | 1973-07-12 |
AU460377B2 (en) | 1975-04-24 |
JPS5521208B1 (en) | 1980-06-07 |
FR2132013B1 (en) | 1978-02-10 |
FR2132013A1 (en) | 1972-11-17 |
BE779391A (en) | 1972-08-16 |
DE2214032A1 (en) | 1972-10-12 |
GB1342548A (en) | 1974-01-03 |
SE374949B (en) | 1975-03-24 |
CA940014A (en) | 1974-01-15 |
US3704650A (en) | 1972-12-05 |
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