GB837664A - Improvements in or relating to hydraulic pumps and pump units - Google Patents
Improvements in or relating to hydraulic pumps and pump unitsInfo
- Publication number
- GB837664A GB837664A GB29015/58A GB2901558A GB837664A GB 837664 A GB837664 A GB 837664A GB 29015/58 A GB29015/58 A GB 29015/58A GB 2901558 A GB2901558 A GB 2901558A GB 837664 A GB837664 A GB 837664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- chamber
- passage
- piston
- liquid
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/14—Pumps characterised by muscle-power operation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
837,664. Reciprocating pumps. MEKLER, D. Sept. 10, 1958 [Sept. 24, 1957], No. 29015/58. Class 102(1). A reciprocating pump comprises a piston 8, reciprocating in a cylinder 5, having a recess 9 in which fits a stationary plunger 17 provided with an axial passage 20 thus forming a low pressure pumping chamber 22 and a high pressure pumping chamber 23. On the suction stroke of the piston 8 liquid is drawn from a supply tank 3 via passages 24b, 24a and non- return valve 26 to chamber 25 from where liquid flows through passage 24 to chamber 22 and past non-return valve 28 and axial passage 20 to chamber 23. On the discharge stroke of the piston 8 liquid is delivered from the chambers past valve 29 to passage 31 which leads to the outlet (not shown). The pressure in the outlet passage 31 also acts on a piston member 36 which opens a spring loaded valve 38 above a predetermined pressure and this valve opens passageways (not shown) which allows the liquid in the low-pressure chamber 22 to be by-passed directly to the tank 3 during the discharge stroke. The valve 38 may be in the form of a cylindrical slide valve and the loading of this valve may be controlled from outside the pump.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL837664X | 1957-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB837664A true GB837664A (en) | 1960-06-15 |
Family
ID=11058145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29015/58A Expired GB837664A (en) | 1957-09-24 | 1958-09-10 | Improvements in or relating to hydraulic pumps and pump units |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB837664A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412600A1 (en) * | 1984-04-04 | 1985-10-17 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart | Hydraulic high-pressure pump for a pressing die for compression moulding of clamps and the like |
-
1958
- 1958-09-10 GB GB29015/58A patent/GB837664A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3412600A1 (en) * | 1984-04-04 | 1985-10-17 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart | Hydraulic high-pressure pump for a pressing die for compression moulding of clamps and the like |
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