JPS56151295A - Geared pump or motor - Google Patents
Geared pump or motorInfo
- Publication number
- JPS56151295A JPS56151295A JP5580580A JP5580580A JPS56151295A JP S56151295 A JPS56151295 A JP S56151295A JP 5580580 A JP5580580 A JP 5580580A JP 5580580 A JP5580580 A JP 5580580A JP S56151295 A JPS56151295 A JP S56151295A
- Authority
- JP
- Japan
- Prior art keywords
- figures
- rate
- change
- area
- state
- 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
Landscapes
- Rotary Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
PURPOSE: To eliminate the generation of noises by keeping locked-up parts at the same state when the difference in the rate of change of the capacity between the parts during the rotation of a gear is small, connecting the same to an intake side and a discharge side on any other occasions thereby preventing generation of extraordinary pressure.
CONSTITUTION: When a state of engagement shown in the upper picture comes to a state of engagement shown in the lower picture, figures S1 and S2 are intercepted from both discharge groove 12 and intake groove 15. And, when rotation starts to advance from the lower picture, the rate of the change in an area to a rotational angle between the figures S1 and S2 turns gradual increase in the rate of change in the area of the figure S2, and when the rate of change in the area between the figures S1 and S2 is extremely small, the tips 25 and 23 of the 2nd and 3rd small grooves 16 and 17 are opened in the figures S1 and S2. Therefore, extraordinary high pressure and low pressure are not caused in the figures S1 and S2 and thus the noises caused thereby are not generated.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5580580A JPS56151295A (en) | 1980-04-25 | 1980-04-25 | Geared pump or motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5580580A JPS56151295A (en) | 1980-04-25 | 1980-04-25 | Geared pump or motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56151295A true JPS56151295A (en) | 1981-11-24 |
JPS6345513B2 JPS6345513B2 (en) | 1988-09-09 |
Family
ID=13009130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5580580A Granted JPS56151295A (en) | 1980-04-25 | 1980-04-25 | Geared pump or motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56151295A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002332973A (en) * | 2001-05-07 | 2002-11-22 | Komatsu Ltd | Groove shape of gear pump side plate |
US20080166254A1 (en) * | 2006-09-28 | 2008-07-10 | Martin Jordan | Hydraulic device |
US8011910B2 (en) * | 2005-02-22 | 2011-09-06 | Limo-Reid, Inc. | Low noise gear set for gear pump |
-
1980
- 1980-04-25 JP JP5580580A patent/JPS56151295A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002332973A (en) * | 2001-05-07 | 2002-11-22 | Komatsu Ltd | Groove shape of gear pump side plate |
JP4726324B2 (en) * | 2001-05-07 | 2011-07-20 | 株式会社小松製作所 | Groove shape of side plate of gear pump |
US8011910B2 (en) * | 2005-02-22 | 2011-09-06 | Limo-Reid, Inc. | Low noise gear set for gear pump |
US20080166254A1 (en) * | 2006-09-28 | 2008-07-10 | Martin Jordan | Hydraulic device |
US8512018B2 (en) * | 2006-09-28 | 2013-08-20 | Trw Automotive Gmbh | Gear pump with pressure relief groove |
Also Published As
Publication number | Publication date |
---|---|
JPS6345513B2 (en) | 1988-09-09 |
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