EP0769104A1 - Helical gear pump or motor - Google Patents
Helical gear pump or motorInfo
- Publication number
- EP0769104A1 EP0769104A1 EP95943151A EP95943151A EP0769104A1 EP 0769104 A1 EP0769104 A1 EP 0769104A1 EP 95943151 A EP95943151 A EP 95943151A EP 95943151 A EP95943151 A EP 95943151A EP 0769104 A1 EP0769104 A1 EP 0769104A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gears
- teeth
- hydraulic apparatus
- gear
- hydraulic
- 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.)
- Granted
Links
Classifications
-
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
- F04C2/02—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- 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
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9413676A GB9413676D0 (en) | 1994-07-07 | 1994-07-07 | Hydraulic apparatus |
GB9413676 | 1994-07-07 | ||
GBGB9506824.3A GB9506824D0 (en) | 1995-04-01 | 1995-04-01 | Hydraulic apparatus |
GB9506824 | 1995-04-01 | ||
PCT/GB1995/001610 WO1996001950A1 (en) | 1994-07-07 | 1995-07-07 | Helical gear pump or motor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0769104A1 true EP0769104A1 (en) | 1997-04-23 |
EP0769104B1 EP0769104B1 (en) | 1999-09-01 |
Family
ID=26305215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95943151A Expired - Lifetime EP0769104B1 (en) | 1994-07-07 | 1995-07-07 | Helical gear pump or motor |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0769104B1 (en) |
JP (1) | JP3972072B2 (en) |
KR (1) | KR970704968A (en) |
AT (1) | ATE184080T1 (en) |
AU (1) | AU2892895A (en) |
DE (1) | DE69511870T2 (en) |
GB (1) | GB2304155B (en) |
WO (1) | WO1996001950A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100104463A1 (en) * | 2007-03-14 | 2010-04-29 | Settima Meccanica S.R.L. | Geared hydraulic apparatus |
EP2317144A2 (en) | 2009-10-30 | 2011-05-04 | Mario Antonio Morselli | Gear for an hydraulic gear machine |
US20180372091A1 (en) * | 2017-06-23 | 2018-12-27 | Hamilton Sundstrand Corporation | Reduction of cavitation in gear pumps |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2312476B (en) * | 1996-04-24 | 1999-12-08 | Sauer Sundstrand Ltd | Pressure balance control in gear pumps |
DE19725462A1 (en) | 1997-06-16 | 1998-12-24 | Storz Endoskop Gmbh | Medical gear pump for suction and rinsing |
FR2772839B1 (en) * | 1997-12-19 | 2000-02-11 | Hydroperfect Int | FUEL PUMP, ESPECIALLY GASOLINE, IN PARTICULAR FOR THE DIRECT INJECTION OF FUEL INTO AN INTERNAL COMBUSTION ENGINE, ELECTRO-PUMP UNIT CONTAINING SUCH A PUMP AND AUTOMOTIVE VEHICLE EQUIPPED WITH AN ELECTRO-PUMP UNIT |
GB2336876B (en) * | 1998-04-29 | 2001-06-27 | Sauer Sundstrand Ltd | Separated helical gear pump |
US6739850B2 (en) * | 2001-10-25 | 2004-05-25 | Kyosan Denki Co., Ltd. | Motor-type fuel pump for vehicle |
US6887055B2 (en) | 2002-10-25 | 2005-05-03 | Mario Antonio Morselli | Positive-displacement rotary pump |
DE202006014930U1 (en) * | 2006-09-28 | 2008-02-14 | Trw Automotive Gmbh | Hydraulic device |
EP2303362B1 (en) * | 2008-07-18 | 2019-06-05 | Becton, Dickinson and Company | Dual chamber and gear pump assembly for a high pressure delivery system |
IT1396898B1 (en) * | 2008-12-02 | 2012-12-20 | Marzocchi Pompe S P A | TOOTHED PROFILE FOR VOLUMETRIC PUMP ROTORS WITH EXTERNAL GEARS. |
US9404366B2 (en) | 2009-10-30 | 2016-08-02 | Settima Meccanica S.R.L. | Gear wheel with profile capable of meshing with semi-encapsulation in a geared hydraulic apparatus |
JP5395631B2 (en) * | 2009-11-13 | 2014-01-22 | 上田鉄工株式会社 | Gear pump |
US9022761B2 (en) * | 2012-08-22 | 2015-05-05 | Roper Pump Company | Elliptical gear pump fluid driving apparatus |
CN102966537A (en) * | 2012-11-22 | 2013-03-13 | 无锡市东方液压件制造有限公司 | Helical gear oil pump suitable for automobile steering systems |
JP2014205129A (en) * | 2013-04-11 | 2014-10-30 | エース技研株式会社 | Liquid discharge unit |
WO2014207860A1 (en) | 2013-06-27 | 2014-12-31 | 住友精密工業株式会社 | Hydraulic device |
CN103644115A (en) * | 2013-08-29 | 2014-03-19 | 钟文填 | Biarc screw pump |
DE102013226852A1 (en) | 2013-12-20 | 2015-06-25 | Volkswagen Aktiengesellschaft | gear pump |
JP2017223197A (en) * | 2016-06-17 | 2017-12-21 | 住友精密工業株式会社 | Hydraulic device |
DE102017207733A1 (en) * | 2017-05-08 | 2018-11-08 | Robert Bosch Gmbh | External gear machine, exhaust heat recovery system with an external gear machine |
IT201800005956A1 (en) * | 2018-06-01 | 2019-12-01 | VOLUMETRIC GEAR MACHINE WITH HELICAL TEETH | |
CN113348303B (en) * | 2019-03-08 | 2023-02-21 | 株式会社岛津制作所 | Helical gear pump or motor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3209611A (en) * | 1961-05-02 | 1965-10-05 | Iyoi Hitosi | Teeth profiles of rotors for gear pumps of rotary type |
FR1355756A (en) * | 1963-02-07 | 1964-03-20 | Johannes Freres | Improved gear pump intended more particularly for public works machinery |
US4265606A (en) * | 1979-11-21 | 1981-05-05 | Lehnus Edward L | Fositive displacement pulse free rotary fluid pump |
US4548562A (en) * | 1982-09-07 | 1985-10-22 | Ford Motor Company | Helical gear pump with specific helix angle, tooth contact length and circular base pitch relationship |
US5108275A (en) * | 1990-12-17 | 1992-04-28 | Sager William F | Rotary pump having helical gear teeth with a small angle of wrap |
-
1995
- 1995-07-07 AT AT95943151T patent/ATE184080T1/en active
- 1995-07-07 DE DE69511870T patent/DE69511870T2/en not_active Expired - Lifetime
- 1995-07-07 JP JP50418896A patent/JP3972072B2/en not_active Expired - Lifetime
- 1995-07-07 AU AU28928/95A patent/AU2892895A/en not_active Abandoned
- 1995-07-07 KR KR1019970700047A patent/KR970704968A/en not_active Application Discontinuation
- 1995-07-07 GB GB9700560A patent/GB2304155B/en not_active Expired - Lifetime
- 1995-07-07 WO PCT/GB1995/001610 patent/WO1996001950A1/en not_active Application Discontinuation
- 1995-07-07 EP EP95943151A patent/EP0769104B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9601950A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100104463A1 (en) * | 2007-03-14 | 2010-04-29 | Settima Meccanica S.R.L. | Geared hydraulic apparatus |
US8556609B2 (en) * | 2007-03-14 | 2013-10-15 | Mario Antonio Morselli | Geared hydraulic apparatus |
EP2317144A2 (en) | 2009-10-30 | 2011-05-04 | Mario Antonio Morselli | Gear for an hydraulic gear machine |
US20180372091A1 (en) * | 2017-06-23 | 2018-12-27 | Hamilton Sundstrand Corporation | Reduction of cavitation in gear pumps |
Also Published As
Publication number | Publication date |
---|---|
AU2892895A (en) | 1996-02-09 |
GB2304155A (en) | 1997-03-12 |
GB2304155B (en) | 1998-08-19 |
JPH10502715A (en) | 1998-03-10 |
KR970704968A (en) | 1997-09-06 |
WO1996001950A1 (en) | 1996-01-25 |
DE69511870T2 (en) | 2000-05-04 |
DE69511870D1 (en) | 1999-10-07 |
EP0769104B1 (en) | 1999-09-01 |
ATE184080T1 (en) | 1999-09-15 |
GB9700560D0 (en) | 1997-03-05 |
JP3972072B2 (en) | 2007-09-05 |
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