GB1052211A - - Google Patents
Info
- Publication number
- GB1052211A GB1052211A GB1052211DA GB1052211A GB 1052211 A GB1052211 A GB 1052211A GB 1052211D A GB1052211D A GB 1052211DA GB 1052211 A GB1052211 A GB 1052211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- chamber
- connection
- devices
- 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
- 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
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Fluid Gearings (AREA)
- Control Of Transmission Device (AREA)
Abstract
1,052,211. Reciprocating pumps. MASSEYFERGUSON Inc. July 25, 1963 [Aug. 3, 1962], No.29417/63. Heading F1A. A radial multi-cylinder pump is supplied with hydraulic fluid by a gear pump 14 and delivers to a variable demand 60 such as an automatic transmission for road vehicles. The inlet pressure is governed by an adjustable spring loaded valve 22 and the outlet pressure acts upon a piston 46 in a chamber 52. The piston 46 bears on a valve member 40 and an increase in delivery pressure will move the member 40 so as to throttle the pump inlet valve port 64. An excessive build up of delivery pressure opens a valve 86 and pressure liquid flows into a chamber 82 to move the member 42 so as to close the valve port 64. The chamber 82 is connected to a sump 10 through a connection 88 and a valve 90 which includes a restricted orifice 92 to damp any tendency of the member 40 to oscillate during rapid pressure changes. The demand 60 may represent closed circuit hydraulic devices exhausting through a connection 62, open circuit devices exhausting through a connection 63 or a combination of both types of devices.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1052211A true GB1052211A (en) | 1900-01-01 |
Family
ID=1756861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1052211D Expired GB1052211A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1052211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2323037A1 (en) * | 1975-09-04 | 1977-04-01 | Deere & Co | VARIABLE FLOW HYDRAULIC SYSTEM |
| CZ307543B6 (en) * | 2017-06-08 | 2018-11-21 | Emil Brabec | A piston pump for liquids, especially for more viscous and pastelike media |
-
0
- GB GB1052211D patent/GB1052211A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2323037A1 (en) * | 1975-09-04 | 1977-04-01 | Deere & Co | VARIABLE FLOW HYDRAULIC SYSTEM |
| CZ307543B6 (en) * | 2017-06-08 | 2018-11-21 | Emil Brabec | A piston pump for liquids, especially for more viscous and pastelike media |
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