GB1243082A - Improvements relating to fluid-powered piston and cylinder units - Google Patents
Improvements relating to fluid-powered piston and cylinder unitsInfo
- Publication number
- GB1243082A GB1243082A GB46454/68A GB4645468A GB1243082A GB 1243082 A GB1243082 A GB 1243082A GB 46454/68 A GB46454/68 A GB 46454/68A GB 4645468 A GB4645468 A GB 4645468A GB 1243082 A GB1243082 A GB 1243082A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- bore
- cylinder
- fluid
- ring
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/30—Constructional features with positive brakes or locks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Fluid-Damping Devices (AREA)
Abstract
1,243,082. Hydraulic actuators. WEBLEY & SCOTT Ltd. Dec.5, 1968 [Oct. 1, 1968], No.46454/68. Heading F1P. [Also in Division B8] A hydraulic fluid powered piston and cylinder unit is provided with an annular groove 13 in the cylinder 11 accommodating a spring metal piston ring 20 of rectangular cross-section and having a split 29, which urges itself inwardly against the piston 21 to enter an annular recess 22 in the piston when this comes in register with the groove 13, the piston having a shoulder (e.g. the lower radial face of the recess 22) to engage the piston ring and thereby positively limit the piston stroke in one direction. The piston may have a diametral bore 30 housing a bar 31 having piston-ring engaging recesses 33 and connected to a valve 40 so as to relieve the pressure on the undersurface 23 of the piston at the end of the stroke, fluid escaping via the bore 30, the split 29 and at least one bore 14 in the cylinder wall covered by an elastic garter seal 17. The piston and cylinder unit may form part of a hydraulic lifting jack.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB46454/68A GB1243082A (en) | 1968-10-01 | 1968-10-01 | Improvements relating to fluid-powered piston and cylinder units |
US783033A US3552273A (en) | 1968-10-01 | 1968-12-11 | Piston and cylinder unit having stroke limiting means |
DE19681814346 DE1814346A1 (en) | 1968-10-01 | 1968-12-12 | Pressurized cylinder-piston arrangement |
FR1603498D FR1603498A (en) | 1968-10-01 | 1968-12-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB46454/68A GB1243082A (en) | 1968-10-01 | 1968-10-01 | Improvements relating to fluid-powered piston and cylinder units |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1243082A true GB1243082A (en) | 1971-08-18 |
Family
ID=10441335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB46454/68A Expired GB1243082A (en) | 1968-10-01 | 1968-10-01 | Improvements relating to fluid-powered piston and cylinder units |
Country Status (4)
Country | Link |
---|---|
US (1) | US3552273A (en) |
DE (1) | DE1814346A1 (en) |
FR (1) | FR1603498A (en) |
GB (1) | GB1243082A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103291686A (en) * | 2013-05-15 | 2013-09-11 | 江苏天鹏机电制造有限公司 | Middle cylinder of plunger-type hydraulic cylinder |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1499925A (en) * | 1975-07-25 | 1978-02-01 | Tangye Ltd | Hydraulic jack |
US4050674A (en) * | 1976-12-27 | 1977-09-27 | Tangye Limited | Hydraulic jack |
US4211149A (en) * | 1977-10-13 | 1980-07-08 | Pneumo Corporation | Split lock ring for locking actuator and method for manufacturing the same |
JP3386052B2 (en) * | 2001-02-13 | 2003-03-10 | トヨタ自動車株式会社 | Pump device |
FR2958349B1 (en) | 2010-03-30 | 2012-06-15 | Airbus Operations Sas | SINGLE EFFECT HYDRAULIC CYLINDER |
FR2973454B1 (en) * | 2011-03-31 | 2014-03-28 | Messier Bugatti | HYDRAULIC ACTUATOR WITH AUTOMATIC PURGE AT THE END OF THE RACE. |
CN103967864B (en) * | 2014-05-09 | 2017-01-25 | 中广核研究院有限公司 | High-pressure double-action self-compensation thin-wall hydraulic cylinder |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1771219A (en) * | 1926-10-04 | 1930-07-22 | George N Hein | Syringe |
US2839032A (en) * | 1956-10-16 | 1958-06-17 | Tangyes Ltd | Hydraulic or pneumatic rams |
US3166990A (en) * | 1962-03-02 | 1965-01-26 | Teves Kg Alfred | Assembly with relatively displaceable members |
-
1968
- 1968-10-01 GB GB46454/68A patent/GB1243082A/en not_active Expired
- 1968-12-11 US US783033A patent/US3552273A/en not_active Expired - Lifetime
- 1968-12-12 DE DE19681814346 patent/DE1814346A1/en active Pending
- 1968-12-19 FR FR1603498D patent/FR1603498A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103291686A (en) * | 2013-05-15 | 2013-09-11 | 江苏天鹏机电制造有限公司 | Middle cylinder of plunger-type hydraulic cylinder |
Also Published As
Publication number | Publication date |
---|---|
DE1814346A1 (en) | 1970-06-25 |
US3552273A (en) | 1971-01-05 |
FR1603498A (en) | 1971-04-19 |
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