GB1517404A - Piston and cylinder pumping units for hydraulic lifting devices - Google Patents
Piston and cylinder pumping units for hydraulic lifting devicesInfo
- Publication number
- GB1517404A GB1517404A GB43415/76A GB4341576A GB1517404A GB 1517404 A GB1517404 A GB 1517404A GB 43415/76 A GB43415/76 A GB 43415/76A GB 4341576 A GB4341576 A GB 4341576A GB 1517404 A GB1517404 A GB 1517404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- hydraulic lifting
- lifting devices
- pumping units
- passage
- 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
- B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Actuator (AREA)
Abstract
1517404 Reciprocating pumps JUNGHEINRICH UNTERNEHMUNGS VERWALTUNG KG 20 Oct 1976 [15 Nov 1975] 43415/76 Heading F1A The piston 12 of an hydraulic reciprocating pump has a valved passage 14 which is opened during the downstroke when the load exceeds a given value thus reducing the effective cross-section of the piston to that of the rod 9. A second valved passage 22 allows discharge of fluid from the chamber 18 above the piston on the upstroke. In a modification the opening of passage 22 is controlled by limited axial movement of the piston on the rod Figs. 2, 3 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2551336A DE2551336B2 (en) | 1975-11-15 | 1975-11-15 | Hydraulic lifting device with a load stroke cylinder piston unit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1517404A true GB1517404A (en) | 1978-07-12 |
Family
ID=5961817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43415/76A Expired GB1517404A (en) | 1975-11-15 | 1976-10-20 | Piston and cylinder pumping units for hydraulic lifting devices |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2551336B2 (en) |
FR (1) | FR2331510A1 (en) |
GB (1) | GB1517404A (en) |
SE (1) | SE406315B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100339296C (en) * | 2003-09-11 | 2007-09-26 | 容海因里希股份公司 | Pump for hand operated forklift truck |
CN103482532A (en) * | 2013-05-14 | 2014-01-01 | 京山县杰美实业有限责任公司 | Novel differential type hydraulic loading and unloading vehicle |
CN115788825A (en) * | 2022-12-09 | 2023-03-14 | 广东凯普生物科技股份有限公司 | Sustainable adsorbed plunger pump and object move and get subassembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3710919C1 (en) * | 1987-04-01 | 1988-06-30 | Fluidtech Gmbh | Hydraulic single piston pump for manual operation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2749845A (en) * | 1955-04-25 | 1956-06-12 | New York Air Brake Co | Pump |
FR1181664A (en) * | 1957-08-26 | 1959-06-17 | Hersan & Cie | Improvements to piston pumps |
US2948222A (en) * | 1958-08-04 | 1960-08-09 | William S Pine | Pump |
SE340407B (en) * | 1967-11-23 | 1971-11-15 | Domkraft Ab Nike | |
FR2268171A1 (en) * | 1974-04-18 | 1975-11-14 | Mic Sa | Double pump with high and low delivery - has valve between main and auxiliary pistons opened by change of load |
-
1975
- 1975-11-15 DE DE2551336A patent/DE2551336B2/en not_active Withdrawn
-
1976
- 1976-08-26 SE SE7609448A patent/SE406315B/en unknown
- 1976-10-20 GB GB43415/76A patent/GB1517404A/en not_active Expired
- 1976-10-29 FR FR7632859A patent/FR2331510A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100339296C (en) * | 2003-09-11 | 2007-09-26 | 容海因里希股份公司 | Pump for hand operated forklift truck |
CN103482532A (en) * | 2013-05-14 | 2014-01-01 | 京山县杰美实业有限责任公司 | Novel differential type hydraulic loading and unloading vehicle |
CN115788825A (en) * | 2022-12-09 | 2023-03-14 | 广东凯普生物科技股份有限公司 | Sustainable adsorbed plunger pump and object move and get subassembly |
CN115788825B (en) * | 2022-12-09 | 2023-06-02 | 广东凯普生物科技股份有限公司 | Sustainable adsorption plunger pump and object moving and taking assembly |
Also Published As
Publication number | Publication date |
---|---|
SE7609448L (en) | 1977-05-16 |
DE2551336B2 (en) | 1979-08-30 |
FR2331510A1 (en) | 1977-06-10 |
DE2551336A1 (en) | 1977-05-18 |
SE406315B (en) | 1979-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |