GB1119959A - Improvements in axial plunger oil pumps - Google Patents
Improvements in axial plunger oil pumpsInfo
- Publication number
- GB1119959A GB1119959A GB3040367A GB3040367A GB1119959A GB 1119959 A GB1119959 A GB 1119959A GB 3040367 A GB3040367 A GB 3040367A GB 3040367 A GB3040367 A GB 3040367A GB 1119959 A GB1119959 A GB 1119959A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- pistons
- passages
- plate
- pressure
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/28—Control of machines or pumps with stationary cylinders
Abstract
1,119,959. Swash-plate pumps. KUO TSAI. June 30, 1967, No. 30403/67. Heading F1A. An axial piston oil pump has automatic adjustment of its pressure and volume output according to load, so as to present a substantially constant load to its driving motor, and comprises pistons 11, 11a reciprocated by a rotating swash-plate 10, one or more pistons 11a having by-pass passages 13 controlled by sleeves 28 on a plate 22 axially adjustable by a piston 19 subjected to the pump outlet pressure and to an adjustable spring 23, so that over a pressure range set by the loading of spring 23, the output of pistons 11a is reduced from maximum to zero; above this pressure range a further control piston 32 is operated by the outlet pressure against spring 34 to throttle the pump inlet by valve 33 and to by-pass the pump delivery through passages 30, 36 and 6 to a reservoir. The pump inlet 4 and cylinder inlets 29 communicate with the pump casing interior 14, and the cylinder outlets communicate through valves 16 with a common delivery chamber 17 and outlet 5. Delivery chamber 17 communicates with control pistons 19 and 32 via passages 18 and 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3040367A GB1119959A (en) | 1967-06-30 | 1967-06-30 | Improvements in axial plunger oil pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3040367A GB1119959A (en) | 1967-06-30 | 1967-06-30 | Improvements in axial plunger oil pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1119959A true GB1119959A (en) | 1968-07-17 |
Family
ID=10307145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3040367A Expired GB1119959A (en) | 1967-06-30 | 1967-06-30 | Improvements in axial plunger oil pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1119959A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2292424A (en) * | 1994-08-19 | 1996-02-21 | Microhydraulics Inc | Variable capacity hydraulic pump |
| US10738757B2 (en) * | 2015-12-04 | 2020-08-11 | Regetns of the University of Minnesota | Variable displacement pump-motor |
-
1967
- 1967-06-30 GB GB3040367A patent/GB1119959A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2292424A (en) * | 1994-08-19 | 1996-02-21 | Microhydraulics Inc | Variable capacity hydraulic pump |
| US10738757B2 (en) * | 2015-12-04 | 2020-08-11 | Regetns of the University of Minnesota | Variable displacement pump-motor |
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