GB964309A - Low level oil control for hydraulic lifts - Google Patents
Low level oil control for hydraulic liftsInfo
- Publication number
- GB964309A GB964309A GB7983/63A GB798363A GB964309A GB 964309 A GB964309 A GB 964309A GB 7983/63 A GB7983/63 A GB 7983/63A GB 798363 A GB798363 A GB 798363A GB 964309 A GB964309 A GB 964309A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- sleeve
- oil
- base
- cylinder
- 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
- 238000007789 sealing Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
- B66F7/18—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by a single central jack
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/004—Fluid pressure supply failure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Fluid-Damping Devices (AREA)
Abstract
964,309. Garage lifts; fluid pressure jacks. JOYCE-CRIDLAND CO. Feb. 28, 1963 [May 7, 1962], No. 7983/63. Headings B8H and B8J. The oil-containing piston 10 of a garage lift is raised in a cylinder 12 by applying air under pressure to the surface of the oil in the piston through a tube 34 connected to the inlet port 36 in the cylinder base thereby causing oil to flow from the piston to the cylinder through a metering device 18 in the base 16 of the piston, and means are provided which automatically prevent further transfer of oil from the piston when the oil in the piston falls to a predetermined level above the metering device. The metering device 18 comprises a sleeve 50 mounted in the aperture 20 in the piston base 16 and provided with sealing plates 52, 54 surrounding the air tube 34. As the piston is raised, the plate 52 is pressed down on to the piston base 16 and oil passes through an annular passage 60 between the sleeve 50 and tube 34, through a passage 62 in the sleeve 50 and between the base 16 and plate 54 into the cylinder. A floating valve member 70, comprising a sleeve 76 loosely supported on the air tube 34 and provided with floats 72 closes the passage 62 when it engages the metering device 18 due to a fall in the oil level in the piston 16, thereby preventing further raising of the piston 10. A sealing ring 80 is provided on the sleeve 76 and closes the space between the sleeve and the air tube 34 when the sleeve seats on the plate 54. The cylinder is provided with a stop 46 to engage a flange 44 on the base of the piston U.S.A. Specification 2,763,128 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US192911A US3179014A (en) | 1962-05-07 | 1962-05-07 | Low oil level control device for hydraulic lifts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB964309A true GB964309A (en) | 1964-07-22 |
Family
ID=22711523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7983/63A Expired GB964309A (en) | 1962-05-07 | 1963-02-28 | Low level oil control for hydraulic lifts |
Country Status (3)
Country | Link |
---|---|
US (1) | US3179014A (en) |
DE (2) | DE1220574B (en) |
GB (1) | GB964309A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2642467A1 (en) * | 1976-09-21 | 1978-03-23 | Hoernstein Baerbel | Pumping set inside hydraulic lifting ram - is mounted eccentrically in hollow piston containing unpressurised fluid |
CN112901600A (en) * | 2021-01-26 | 2021-06-04 | 中车青岛四方机车车辆股份有限公司 | Hydraulic execution unit, carriage lifting system and rail vehicle |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3435731A (en) * | 1967-08-11 | 1969-04-01 | Andrew T Browne | Low liquid level control device |
US3477343A (en) * | 1968-01-02 | 1969-11-11 | Curtis Mfg Co | Lift mechanism |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US523242A (en) * | 1894-07-17 | Automatic stop device for hydraulic elevators | ||
US2574096A (en) * | 1943-12-13 | 1951-11-06 | Chicago Pneumatic Tool Co | Distributing valve |
US2658523A (en) * | 1948-10-11 | 1953-11-10 | Frederick H Johnson | Valve structure |
US2637302A (en) * | 1949-11-12 | 1953-05-05 | Rotary Lift Company | Low oil control |
US2831465A (en) * | 1955-03-02 | 1958-04-22 | Bristol Company | Pilot valve |
US2970577A (en) * | 1958-01-28 | 1961-02-07 | Anderson Clayton & Co | Hydraulic lift |
-
1962
- 1962-05-07 US US192911A patent/US3179014A/en not_active Expired - Lifetime
-
1963
- 1963-02-28 GB GB7983/63A patent/GB964309A/en not_active Expired
- 1963-03-16 DE DEJ23372A patent/DE1220574B/en active Pending
- 1963-03-16 DE DEJ28410A patent/DE1220983B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2642467A1 (en) * | 1976-09-21 | 1978-03-23 | Hoernstein Baerbel | Pumping set inside hydraulic lifting ram - is mounted eccentrically in hollow piston containing unpressurised fluid |
CN112901600A (en) * | 2021-01-26 | 2021-06-04 | 中车青岛四方机车车辆股份有限公司 | Hydraulic execution unit, carriage lifting system and rail vehicle |
Also Published As
Publication number | Publication date |
---|---|
US3179014A (en) | 1965-04-20 |
DE1220574B (en) | 1966-07-07 |
DE1220983B (en) | 1966-07-14 |
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