Title:
INTERNAL GEAR PUMP
Document Type and Number:
WIPO Patent Application WO/2020/110180
Kind Code:
A1
Abstract:
An internal gear pump (1) is provided with: a pinion gear (3); a ring gear (4); a crescent (54); a housing (5) with a slide surface (51) on which an outer peripheral surface (41) of the ring gear slides; a high-pressure oil supply portion (8) which has an inlet (81) opening on the slide surface and supplies a high-pressure operating oil; and a recess (9) provided in the slide surface so as to increase the interval between the outer peripheral surface of the ring gear and the slide surface. The inlet is located in a pressure-increasing region, and the recess is located in a high-pressure region.
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| JPS6016791 | [Title of the device] Gear pump |
| WO/2017/213035 | OIL PUMP |
| JP2014173566 | ROTARY PUMP DEVICE AND BRAKE DEVICE FOR VEHICLE INCLUDING THE SAME |
Inventors:
YOSHIDA KEI (JP)
Application Number:
PCT/JP2018/043438
Publication Date:
June 04, 2020
Filing Date:
November 26, 2018
Export Citation:
Assignee:
SUMITOMO PRECISION PROD CO (JP)
International Classes:
F04C2/10
Foreign References:
| JPS61179385U | 1986-11-08 | |||
| JPH07151066A | 1995-06-13 | |||
| JP2014148907A | 2014-08-21 | |||
| JPS61171885U | 1986-10-25 | |||
| JPS61179385U | 1986-11-08 | |||
| JPH07151066A | 1995-06-13 | |||
| JPS62158181U | 1987-10-07 |
Other References:
See also references of EP 3828415A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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