FR2244925A1 - Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambers - Google Patents
Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambersInfo
- Publication number
- FR2244925A1 FR2244925A1 FR7333739A FR7333739A FR2244925A1 FR 2244925 A1 FR2244925 A1 FR 2244925A1 FR 7333739 A FR7333739 A FR 7333739A FR 7333739 A FR7333739 A FR 7333739A FR 2244925 A1 FR2244925 A1 FR 2244925A1
- Authority
- FR
- France
- Prior art keywords
- shock absorber
- annular chambers
- cylinder sleeve
- cylinder
- outlet orifices
- 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
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
- 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
- F15B15/224—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston which closes off fluid outlets in the cylinder bore by its own movement
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The damping device for the end of travel of a hydraulic jack has, on the end zones of the cylindrical jacket of the jack, several exhaust orifices which connect annular chambers formed in the end covers of the cylinder and the cylinder chambers, enabling the fluid to flow between one cylinder chamber and the corresponding annular chamber. The sealing of each cylinder chamber is achieved by a cast iron ring which, in operation, successively closes the exhaust orifices. The exhaust orifices are placed in an helical line and the number and diameter of the orifices is dependant on the damping required.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7333739A FR2244925A1 (en) | 1973-09-20 | 1973-09-20 | Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7333739A FR2244925A1 (en) | 1973-09-20 | 1973-09-20 | Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambers |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2244925A1 true FR2244925A1 (en) | 1975-04-18 |
FR2244925B1 FR2244925B1 (en) | 1977-01-07 |
Family
ID=9125312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7333739A Granted FR2244925A1 (en) | 1973-09-20 | 1973-09-20 | Shock absorber for end of piston travel - cylinder sleeve has outlet orifices to annular chambers |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2244925A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2833657A1 (en) * | 2001-12-14 | 2003-06-20 | Eurocopter Deutschland | Gas-actuated emergency power cylinder for opening aircraft cabin door has air outlet into annular chamber with controlled release valve |
EP1460276A3 (en) * | 2003-03-19 | 2005-06-01 | Bosch Rexroth Teknik AB | Pneumatic cylinder with damping means in the end cap |
EP1559918A3 (en) * | 2004-02-02 | 2005-08-17 | Bosch Rexroth Teknik AB | Pneumatic cylinder with cushioning means disposed in an end cover |
EP1988296A1 (en) * | 2007-05-02 | 2008-11-05 | Siemens Aktiengesellschaft | Variations of the closing speed of a valve by using severals throttling apertures |
DE102008027734A1 (en) * | 2008-06-11 | 2009-12-17 | Trw Automotive Gmbh | Cylinder/piston unit for active undercarriage stabilization system, has cylinder comprising two end stops for determining axial end stop position of piston, where piston covers opening of chamber in axial stop position |
CN102261355A (en) * | 2011-06-23 | 2011-11-30 | 宁波亚德客自动化工业有限公司 | Rotary actuation device with buffer structure |
FR3046824A1 (en) * | 2016-01-18 | 2017-07-21 | Hydraulique Pb | PROGRESSIVE END-OF-STROKE RETARDER AND PROGRESSIVE STARTING START DEVICE FOR HYDRAULIC CYLINDER |
-
1973
- 1973-09-20 FR FR7333739A patent/FR2244925A1/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2833657A1 (en) * | 2001-12-14 | 2003-06-20 | Eurocopter Deutschland | Gas-actuated emergency power cylinder for opening aircraft cabin door has air outlet into annular chamber with controlled release valve |
EP1460276A3 (en) * | 2003-03-19 | 2005-06-01 | Bosch Rexroth Teknik AB | Pneumatic cylinder with damping means in the end cap |
EP1559918A3 (en) * | 2004-02-02 | 2005-08-17 | Bosch Rexroth Teknik AB | Pneumatic cylinder with cushioning means disposed in an end cover |
EP1988296A1 (en) * | 2007-05-02 | 2008-11-05 | Siemens Aktiengesellschaft | Variations of the closing speed of a valve by using severals throttling apertures |
WO2008135328A1 (en) * | 2007-05-02 | 2008-11-13 | Siemens Aktiengesellschaft | Variations in valve closing speed obtained by the use of different orifices |
DE102008027734A1 (en) * | 2008-06-11 | 2009-12-17 | Trw Automotive Gmbh | Cylinder/piston unit for active undercarriage stabilization system, has cylinder comprising two end stops for determining axial end stop position of piston, where piston covers opening of chamber in axial stop position |
CN102261355A (en) * | 2011-06-23 | 2011-11-30 | 宁波亚德客自动化工业有限公司 | Rotary actuation device with buffer structure |
CN102261355B (en) * | 2011-06-23 | 2014-01-08 | 宁波亚德客自动化工业有限公司 | Rotary actuation device with buffer structure |
FR3046824A1 (en) * | 2016-01-18 | 2017-07-21 | Hydraulique Pb | PROGRESSIVE END-OF-STROKE RETARDER AND PROGRESSIVE STARTING START DEVICE FOR HYDRAULIC CYLINDER |
Also Published As
Publication number | Publication date |
---|---|
FR2244925B1 (en) | 1977-01-07 |
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