EP0258797A3 - Variable discharge gear pump - Google Patents
Variable discharge gear pump Download PDFInfo
- Publication number
- EP0258797A3 EP0258797A3 EP87112353A EP87112353A EP0258797A3 EP 0258797 A3 EP0258797 A3 EP 0258797A3 EP 87112353 A EP87112353 A EP 87112353A EP 87112353 A EP87112353 A EP 87112353A EP 0258797 A3 EP0258797 A3 EP 0258797A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear pump
- variable discharge
- variable
- discharge gear
- pump housing
- 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.)
- Withdrawn
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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/10—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C14/14—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20248786 | 1986-08-27 | ||
JP202487/86 | 1986-08-27 | ||
JP62117560A JPH01104991A (en) | 1986-08-27 | 1987-05-13 | Variable displacement gear pump |
JP117560/87 | 1987-05-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0258797A2 EP0258797A2 (en) | 1988-03-09 |
EP0258797A3 true EP0258797A3 (en) | 1988-10-05 |
Family
ID=26455654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87112353A Withdrawn EP0258797A3 (en) | 1986-08-27 | 1987-08-25 | Variable discharge gear pump |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0258797A3 (en) |
JP (1) | JPH01104991A (en) |
KR (1) | KR880003112A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4231690A1 (en) * | 1992-09-22 | 1994-03-24 | Walter Schopf | Tuner gear pump with outer gear rotor in housing - has outer rotor fixing, bearing, and positioning members providing movement freedom and positioning for outer rotor |
EP0846861B1 (en) * | 1996-12-04 | 2003-03-19 | Siegfried A. Dipl.-Ing. Eisenmann | Continuously variable annular gear pump |
CA2219062C (en) * | 1996-12-04 | 2001-12-25 | Siegfried A. Eisenmann | Infinitely variable ring gear pump |
DE10207350C5 (en) * | 2001-02-23 | 2006-11-30 | Joma-Hydromechanic Gmbh | Flow variable rotor pump |
US7153110B2 (en) | 2002-12-19 | 2006-12-26 | Joma-Hydromechanic Gmbh | Variable volume flow internal gear pump |
DE10305585B3 (en) * | 2002-12-19 | 2004-02-12 | Joma-Hydromechanic Gmbh | Rotary pump for hydraulic fluid has slide between compression and induction connections to alter effective size of at least one connection |
FR2865507B1 (en) * | 2004-01-27 | 2006-03-17 | Renault Sas | ROTARY TROOPOID PUMP WITH VARIABLE FLOW |
EP2894295B1 (en) | 2014-01-10 | 2016-08-24 | Volvo Car Corporation | A control ring for a displacement pump and a displacement pump |
EP2894294B1 (en) * | 2014-01-10 | 2016-08-24 | Volvo Car Corporation | Control ring for a hydrostatical device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026809A (en) * | 1956-04-06 | 1962-03-27 | Borg Warner | Internal-external gear pump |
GB896393A (en) * | 1959-08-14 | 1962-05-16 | Robert Wesley Brundage | Variable volume internal chamber type hydraulic pump |
GB1426223A (en) * | 1973-05-15 | 1976-02-25 | Concentric Pumps Ltd | Rotary positive-idsplacement pumps |
-
1987
- 1987-05-13 JP JP62117560A patent/JPH01104991A/en active Pending
- 1987-08-25 EP EP87112353A patent/EP0258797A3/en not_active Withdrawn
- 1987-08-25 KR KR870009271A patent/KR880003112A/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026809A (en) * | 1956-04-06 | 1962-03-27 | Borg Warner | Internal-external gear pump |
GB896393A (en) * | 1959-08-14 | 1962-05-16 | Robert Wesley Brundage | Variable volume internal chamber type hydraulic pump |
GB1426223A (en) * | 1973-05-15 | 1976-02-25 | Concentric Pumps Ltd | Rotary positive-idsplacement pumps |
Also Published As
Publication number | Publication date |
---|---|
EP0258797A2 (en) | 1988-03-09 |
JPH01104991A (en) | 1989-04-21 |
KR880003112A (en) | 1988-05-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR GB IT NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE ES FR GB IT NL |
|
17P | Request for examination filed |
Effective date: 19880909 |
|
17Q | First examination report despatched |
Effective date: 19890331 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19891011 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SUGIMOTO, MAMORUITAMI WORKS Inventor name: TERADA, MUTSUOITAMI WORKS Inventor name: HASHIMOTO, KIKUOITAMI WORKS Inventor name: SAEGUSA, YASUYOSHIITAMI WORKS |