GB1126725A - Hydraulic jack and piston valve member therefor - Google Patents
Hydraulic jack and piston valve member thereforInfo
- Publication number
- GB1126725A GB1126725A GB52649/66A GB5264966A GB1126725A GB 1126725 A GB1126725 A GB 1126725A GB 52649/66 A GB52649/66 A GB 52649/66A GB 5264966 A GB5264966 A GB 5264966A GB 1126725 A GB1126725 A GB 1126725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- stems
- members
- valve
- hydraulic jack
- 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
-
- 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
- F15B15/225—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke with valve stems operated by contact with the piston end face or with the cylinder wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D49/00—Tractors
- B62D49/04—Tractors modified to take pushing devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
- E02F3/844—Drives or control devices therefor, e.g. hydraulic drive systems for positioning the blade, e.g. hydraulically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Transportation (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Actuator (AREA)
Abstract
1,126,725. Hydraulic jacks. CATERPILLAR. TRACTOR CO. 24 Nov., 1966 [27 Dec., 1965], No. 52649/66. Heading B8J. [Also in Division F1] In an hydraulic jack comprising a piston 23 and a cylinder 16, the piston contains a plurality of valve-members 27, 28 having stems slidingly lodged in sleeves 31, which include passages 35, to permit flow of working fluid from the highpressure side of the piston into exhaust conduits 36, 37 when the piston approaches the end of each stroke, the stems on at least one of the valve-members e.g. the stems 29, being longer than the stems on the other valve-member, or members, to effect earlier opening of the corresponding valve-member, or members, so that shock sustained by the piston is minimal. The sleeves 31 are retained in the piston by washers 33, 34 on a rod 20 attached to the piston, which rod is coupled to a pivotallysupported blade (11), Fig. 1 (not shown) in an earth-working machine (10).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US516619A US3311026A (en) | 1965-12-27 | 1965-12-27 | Bypass valve for hydraulic jacks |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1126725A true GB1126725A (en) | 1968-09-11 |
Family
ID=24056386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB52649/66A Expired GB1126725A (en) | 1965-12-27 | 1966-11-24 | Hydraulic jack and piston valve member therefor |
Country Status (6)
Country | Link |
---|---|
US (1) | US3311026A (en) |
BE (1) | BE691819A (en) |
DE (1) | DE1279908B (en) |
FR (1) | FR1506058A (en) |
GB (1) | GB1126725A (en) |
SE (1) | SE304921B (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3515224A (en) * | 1967-10-05 | 1970-06-02 | Case Co J I | Hydraulic cylinder control for bulldozer |
DE2056066C3 (en) * | 1970-11-14 | 1979-11-15 | Daimler-Benz Ag, 7000 Stuttgart | Disconnection device for the hydraulic auxiliary power in a power steering system for vehicles |
JPS5733202Y2 (en) * | 1975-02-12 | 1982-07-22 | ||
GB1536417A (en) * | 1975-06-19 | 1978-12-20 | Emhart Ind | Cylinder and piston assemblies |
US3991832A (en) * | 1975-07-14 | 1976-11-16 | Deere & Company | Hydraulically tiltable and anglable dozer blade and mounting therefor |
JPS5234393U (en) * | 1975-08-30 | 1977-03-10 | ||
US4031967A (en) * | 1976-06-14 | 1977-06-28 | Caterpillar Tractor Co. | Motor grader with spherical bearing mounting for blade tilt cylinders |
US4060136A (en) * | 1976-06-14 | 1977-11-29 | Caterpillar Tractor Co. | Motor grader blade mounting and tilt mechanism |
DE2801296A1 (en) * | 1978-01-13 | 1979-07-19 | Massey Ferguson Hanomag Inc & | DEVICE FOR CHANGING THE SETTING OF A PIVOT BLADE OF EARTHMOVING MACHINERY |
JPS5673204A (en) * | 1979-11-14 | 1981-06-17 | Takara Isu Kogyo Kk | Hydraulic driving apparatus |
US4509409A (en) * | 1983-02-07 | 1985-04-09 | Towmotor Corporation | Pump arrangement for a linear fluid operated device |
FR2547290B1 (en) * | 1983-06-07 | 1987-04-30 | Rassant Sa Ets F | HYDRAULIC JACK WITH IMPROVED TRAVEL LIMITER |
DE3417447A1 (en) * | 1984-05-11 | 1985-11-21 | E.P.E. Budde GmbH, 5980 Werdohl | Device for detecting the end positions of a hydraulic cylinder |
EP0182927B1 (en) * | 1984-11-26 | 1988-09-21 | ETABLISSEMENTS F. Rassant S.A. | Hydraulic jack with limited travel |
US4860646A (en) * | 1987-02-10 | 1989-08-29 | Marathon Corporation | Compactor with hydraulic dwell and method |
US4825752A (en) * | 1987-12-14 | 1989-05-02 | Commercial Shearing, Inc. | End-of-stroke bypass valve in piston for impact relief in hydraulic tilt and trim cylinder |
DE202013001260U1 (en) | 2013-02-12 | 2014-05-14 | Bümach Engineering International B.V. | Working cylinder with pressure medium overflow |
WO2015050063A1 (en) | 2014-09-26 | 2015-04-09 | 株式会社小松製作所 | Cylinder with impact buffering function |
CN107806457A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of pressure release buffering hydraulic cylinder |
WO2023147797A1 (en) | 2022-02-04 | 2023-08-10 | Bümach Engineering International B. V. | Working cylinder with pressure medium overflow |
DE202022000299U1 (en) | 2022-02-04 | 2023-06-09 | Bümach Enginneering International B.V. | Working cylinder with pressure medium overflow |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US841527A (en) * | 1904-10-11 | 1907-01-15 | Joseph H Hoover | Piston. |
US1985361A (en) * | 1931-06-01 | 1934-12-25 | Anthony Co | Hoist control |
GB640414A (en) * | 1948-03-06 | 1950-07-19 | Mavor & Coulson Ltd | Improvements in props |
FR1062300A (en) * | 1952-08-29 | 1954-04-21 | Cylinder | |
US2752890A (en) * | 1955-01-27 | 1956-07-03 | Power Brake Parts Mfg Co | Pneumatic actuator with automatic pressure unloading device |
US2902007A (en) * | 1957-05-31 | 1959-09-01 | Allis Chalmers Mfg Co | Cylinder piston assembly with pressure relieving means |
US3182563A (en) * | 1963-08-19 | 1965-05-11 | Thompson Ramo Wooldridge Inc | Hydraulic cylinder piston |
-
1965
- 1965-12-27 US US516619A patent/US3311026A/en not_active Expired - Lifetime
-
1966
- 1966-11-24 GB GB52649/66A patent/GB1126725A/en not_active Expired
- 1966-12-20 SE SE17450/66A patent/SE304921B/xx unknown
- 1966-12-23 DE DEC41099A patent/DE1279908B/en active Pending
- 1966-12-23 FR FR88763A patent/FR1506058A/en not_active Expired
- 1966-12-27 BE BE691819D patent/BE691819A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE304921B (en) | 1968-10-07 |
FR1506058A (en) | 1967-12-15 |
BE691819A (en) | 1967-06-27 |
US3311026A (en) | 1967-03-28 |
DE1279908B (en) | 1968-10-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1126725A (en) | Hydraulic jack and piston valve member therefor | |
GB987078A (en) | ||
GB1380371A (en) | Machine having a telescopic boom | |
GB1482160A (en) | Piston/cylinder assemblies | |
GB988849A (en) | Bulldozers and bulldozer blade assembly therefor | |
GB1464929A (en) | Retaining pin assembly | |
GB959872A (en) | Hydraulic circuit for a tractor drawn implement | |
GB1074416A (en) | Cushion stop mechanism for hydraulic cylinders | |
GB1049456A (en) | Improvements in or relating to grab bucket devices for digging wells or shafts | |
GB1010045A (en) | Leakage prevention for bulldozer pitch jack circuit | |
GB1480753A (en) | Hydraulically-operated devices | |
GB1378363A (en) | Rams | |
GB1057752A (en) | Control system for hydraulically operated equipment such as excavators | |
GB1115725A (en) | Hydraulic cushion for dies | |
GB799228A (en) | Improvements in or relating to a hydraulic valve assembly | |
GB1266087A (en) | ||
GB1088822A (en) | Improvements in fuel injection pumps | |
GB1166416A (en) | A device for Pivotally Connecting Together Two Members | |
GB1289558A (en) | ||
GB1291311A (en) | Machine having a fluid operated boom or other movable member | |
GB920158A (en) | Vibrator motor | |
ES381288A1 (en) | A hydraulic, telescopic damping device. (Machine-translation by Google Translate, not legally binding) | |
JPS52147281A (en) | Double-acting multiple stage oil pressure cylinder | |
GB1085556A (en) | Hydromechanical power transmission | |
GB1239648A (en) |