GB1380768A - Gear pumps - Google Patents
Gear pumpsInfo
- Publication number
- GB1380768A GB1380768A GB1275072A GB1275072A GB1380768A GB 1380768 A GB1380768 A GB 1380768A GB 1275072 A GB1275072 A GB 1275072A GB 1275072 A GB1275072 A GB 1275072A GB 1380768 A GB1380768 A GB 1380768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- bush
- ring
- low
- march
- 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
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
1380768 Rotary positive displacement machines LAMBORGHINI OLEODINAMICA SpA 17 March 1972 [17 March 1971] 12750/72 Heading F1F A gear pump comprises externally meshing gearwheels and bushes bearing against the axial endfaces of the gear wheels, one bush 3 having eccentrically positioned rings 24, 25 which bear against the bush 3 in such a manner as to redistribute the pressure on the outer side of the bush so that the resulting centre of pressure coincides with the centre of pressure 21 generated by the asymmetrical pressures inside the bush 3. Each ring is stepped so as to have a smaller diameter portion which slides in an end cover of the housing, the larger diameter part 30 having an axially extending perimeter flange 26 which slidingly and sealing engages bush 3. The outer space 27 communicates with the high-pressure port 15 through connection 23 and the inner space 28 communicates with low-pressure port 14. Clearly, ring 24 is urged sealingly against bush 3. A gasket 31 surrounds ring 24 to seal the high-pressure passage 27 from low-pressure space 28. A seal on the inlet side, to act as a separator of high and low pressure sides of the bushes, is also described Figs. 5 and 6, (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT336971 | 1971-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1380768A true GB1380768A (en) | 1975-01-15 |
Family
ID=11105822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1275072A Expired GB1380768A (en) | 1971-03-17 | 1972-03-17 | Gear pumps |
Country Status (5)
Country | Link |
---|---|
US (1) | US3816042A (en) |
DE (1) | DE2212529A1 (en) |
ES (1) | ES400740A1 (en) |
FR (1) | FR2178282A5 (en) |
GB (1) | GB1380768A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2436889A1 (en) * | 1978-09-19 | 1980-04-18 | Rexroth Sigma | Hydraulic pump or motor - has gear wheels displacing fluid and chamber to stabilise flow |
JP4977112B2 (en) * | 2008-11-17 | 2012-07-18 | 日立オートモティブシステムズ株式会社 | Gear pump |
JP5441873B2 (en) * | 2010-12-01 | 2014-03-12 | 日立オートモティブシステムズ株式会社 | External gear pump |
DE102020133555A1 (en) * | 2020-12-15 | 2022-06-15 | Leistritz Pumpen Gmbh | screw pump |
CN114152518B (en) * | 2022-02-09 | 2022-05-13 | 北京锦东建设发展有限公司 | Pipe detection device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2665641A (en) * | 1949-06-18 | 1954-01-12 | Borg Warner | Pump, pressure loaded, with differential valve |
US2855855A (en) * | 1949-06-30 | 1958-10-14 | Thompson Prod Inc | High pressure pump |
US2974605A (en) * | 1959-02-12 | 1961-03-14 | Borg Warner | Pressure loaded hydraulic apparatus |
US3083645A (en) * | 1960-06-17 | 1963-04-02 | Int Harvester Co | Gear pump or the like |
GB1058276A (en) * | 1964-02-27 | 1967-02-08 | Dowty Hydraulic Units Ltd | Gear pumps and motors |
US3296977A (en) * | 1965-08-10 | 1967-01-10 | Borg Warner | Pressure loaded pump |
DE1553030A1 (en) * | 1965-10-12 | 1975-06-19 | Otto Eckerle | BACKLASH AND WEAR-COMPENSATING HIGH PRESSURE GEAR PUMP OR -ENGINE |
-
1972
- 1972-03-14 ES ES400740A patent/ES400740A1/en not_active Expired
- 1972-03-15 US US00234788A patent/US3816042A/en not_active Expired - Lifetime
- 1972-03-15 DE DE19722212529 patent/DE2212529A1/en active Pending
- 1972-03-16 FR FR7209199A patent/FR2178282A5/fr not_active Expired
- 1972-03-17 GB GB1275072A patent/GB1380768A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3816042A (en) | 1974-06-11 |
DE2212529A1 (en) | 1972-11-23 |
ES400740A1 (en) | 1975-01-16 |
FR2178282A5 (en) | 1973-11-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |