GB851701A - Hydraulic pump - Google Patents
Hydraulic pumpInfo
- Publication number
- GB851701A GB851701A GB20159/55A GB2015955A GB851701A GB 851701 A GB851701 A GB 851701A GB 20159/55 A GB20159/55 A GB 20159/55A GB 2015955 A GB2015955 A GB 2015955A GB 851701 A GB851701 A GB 851701A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- shaft
- outlet
- groove
- port
- 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
- F04B1/14—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 having stationary cylinders
- F04B1/16—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 having stationary cylinders having two or more sets of cylinders or pistons
-
- 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
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
-
- 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
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
851,701. Swash-plate pumps. NEW PATENTS Ltd., SILBERSTEIN, V., and EASTES, J. C. Oct. 9, 1956 [July 12, 1935], No. 20159/55. Class 102(1). An hydraulic pump comprises a shaft 8, Fig. 1, on which are mounted two swash-plates 9, 10 arranged to reciprocate opposed pistons 13, 14 in cylinder blocks 2 and 3. The piston 13 has a wide annular groove 15 which registers in turn with inlet and outlet ports 16 and 17, so arranged that communication with one port ceases as communication with the other commences. The delivery of the pump is maintained at a predetermined constant by axial movement of the shaft 8 which varies the proportion of each revolution of the swashplate during which the groove 15 of piston 13 registers with the inlet and outlet 16, 17 respectively. The shaft 8 is biased by a spring 43 in a hollow differential piston 37 having one side 40 of smaller area than the other side 41, the two sides being connected by a bleed passage 42. The delivery from the outlet 17 is connected to the smaller side of 40 of the piston 37 and through passages 57 and 45, Fig. 2, to one side of a plunger 47 biased by a spring 50. The larger side 41 of the piston is connected to a port 54 in a cylinder member 60. Any decrease in the delivery pressure will cause a greater force to act on the large side 41 of the piston 37 to move the shaft to the right so that the groove 15 will communicate with outlet 17 for a larger tie up to a maximum where the groove 15 communicates with the inlet and outlet 16, 17 for equal times. Any increase in the delivery pressure above a predetermined valve will cause the plunger 47 to move to the left so that liquid from the large side 41 of the piston 37 will pass through port 54, a recess 53 of the plunger and port 52 to the pump inlet and thus the piston 37 and shaft 8 will move to the left. The delivery pressure is determined by the loading of spring 50 which is adjusted by nut 51. Lubrication is provided by grooves in the piston and pads 12 and passages 24, 25 leading to a groove 26.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20159/55A GB851701A (en) | 1955-07-12 | 1955-07-12 | Hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20159/55A GB851701A (en) | 1955-07-12 | 1955-07-12 | Hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB851701A true GB851701A (en) | 1960-10-19 |
Family
ID=10141361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20159/55A Expired GB851701A (en) | 1955-07-12 | 1955-07-12 | Hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB851701A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1299531B (en) * | 1964-10-12 | 1969-07-17 | Boulton Paul Aircraft Ltd Cods | Ball bearings in the head of the pistons of hydraulic fluid axial or radial piston machines |
| US4201117A (en) * | 1977-04-05 | 1980-05-06 | Lidio Gherner | Hydraulic motor |
| DE3209640A1 (en) * | 1981-04-02 | 1982-12-16 | Messier-Hispano-Bugatti, 92120 Montrouge | HYDRAULIC PUMP |
| FR2992034A1 (en) * | 2012-06-14 | 2013-12-20 | Hydro Leduc | HYDRAULIC PUMP WITH AXIAL PISTONS OPERATING IN BOTH SENSES |
-
1955
- 1955-07-12 GB GB20159/55A patent/GB851701A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1299531B (en) * | 1964-10-12 | 1969-07-17 | Boulton Paul Aircraft Ltd Cods | Ball bearings in the head of the pistons of hydraulic fluid axial or radial piston machines |
| US4201117A (en) * | 1977-04-05 | 1980-05-06 | Lidio Gherner | Hydraulic motor |
| DE3209640A1 (en) * | 1981-04-02 | 1982-12-16 | Messier-Hispano-Bugatti, 92120 Montrouge | HYDRAULIC PUMP |
| FR2992034A1 (en) * | 2012-06-14 | 2013-12-20 | Hydro Leduc | HYDRAULIC PUMP WITH AXIAL PISTONS OPERATING IN BOTH SENSES |
| EP2674622A3 (en) * | 2012-06-14 | 2014-01-15 | Hydro Leduc | Hydraulic pump with axial pistons which can operate in both directions |
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