GB821746A - Load handling vehicles - Google Patents
Load handling vehiclesInfo
- Publication number
- GB821746A GB821746A GB17333/57A GB1733357A GB821746A GB 821746 A GB821746 A GB 821746A GB 17333/57 A GB17333/57 A GB 17333/57A GB 1733357 A GB1733357 A GB 1733357A GB 821746 A GB821746 A GB 821746A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- valve
- fluid
- lines
- supplied
- 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
- 239000012530 fluid Substances 0.000 abstract 4
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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
- B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
821,746. Hydraulic control systems. CLARK EQUIPMENT CO. May 31, 1957 [June 8, 1956], No. 17333/57. Class 69 (2). [Also in Group XXX] Two hydraulic cylinders 47, 43 are interconnected by conduits 77, 78 so that as one piston moves in the other moves out and vice versa. Pressure fluid may however be supplied from a line 60 to either end of the piston 44A under the control of a slide valve 59, the piston 51A being held against motion. To move the piston 44A from right to left fluid is supplied through lines 62, 64 and 77 and returns through lines 78, 75, 73, 71 and 68. Movement of the valve 59 reverses the direction of flow. 63 and 69 are pressure relief valves which allow fluid to pass between the ends of the cylinder 47 if the piston 44A reaches the end of its stroke during the travel of the piston 51A, the valve 59 being closed. Pressure relief valve 72 and check valve 74 communicate with the fluid reservoir and compensate for the volumes of the piston-rods 44, 49. The system is applied to control the movement of the lifting carriage of a lift truck (see Group XXX).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US821746XA | 1956-06-08 | 1956-06-08 | |
| US590211A US2990072A (en) | 1956-06-08 | 1956-06-08 | Material handling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB821746A true GB821746A (en) | 1959-10-14 |
Family
ID=26767152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17333/57A Expired GB821746A (en) | 1956-06-08 | 1957-05-31 | Load handling vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB821746A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204591B (en) * | 1961-05-24 | 1965-11-04 | Yale & Towne Inc | Lift mast training for lifters |
| DE1431575B1 (en) * | 1964-04-17 | 1969-09-11 | Baldwin Lima Hamilton Corp | Mobile crane-like lift truck |
| GB2327076A (en) * | 1997-07-08 | 1999-01-13 | Bamford Excavators Ltd | Hydraulic crowd mechanisms |
| WO2018044871A1 (en) * | 2016-08-30 | 2018-03-08 | Clark Equipment Company | Power lift |
-
1957
- 1957-05-31 GB GB17333/57A patent/GB821746A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204591B (en) * | 1961-05-24 | 1965-11-04 | Yale & Towne Inc | Lift mast training for lifters |
| DE1431575B1 (en) * | 1964-04-17 | 1969-09-11 | Baldwin Lima Hamilton Corp | Mobile crane-like lift truck |
| GB2327076A (en) * | 1997-07-08 | 1999-01-13 | Bamford Excavators Ltd | Hydraulic crowd mechanisms |
| WO2018044871A1 (en) * | 2016-08-30 | 2018-03-08 | Clark Equipment Company | Power lift |
| CN109642408A (en) * | 2016-08-30 | 2019-04-16 | 克拉克设备公司 | Power elevator |
| US11339041B2 (en) | 2016-08-30 | 2022-05-24 | Clark Equipment Company | Power lift |
| CN109642408B (en) * | 2016-08-30 | 2022-06-14 | 克拉克设备公司 | Power elevator |
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