Title:
VANE PUMP
Document Type and Number:
Japanese Patent JP2016156368
Kind Code:
A
Abstract:
PURPOSE: To provide a vane pump capable of reducing the unnecessary action of a vane in a main discharge state at high-pressure.CONSTITUTION: A first main back pressure supply port 55 and a first sub back pressure supply port 56 are formed on a first sliding surface 5a of a first side member 5. The first main back pressure supply port 55 is formed in a groove shape on the first sliding surface 5a, and the first back pressure supply port 56 is communicated with a first sub discharge port 54. A second main back pressure supply port 65 and a second sub back pressure supply port 66 are formed on a second side member 6. The second main back pressure port 65 penetrates in an axial direction, and the second sub back pressure supply port 66 is formed in a groove-shape on a second sliding surface 6a.SELECTED DRAWING: Figure 1
Inventors:
SEMBONGI YUJI
SATO TAKAHIRO
SATO TAKAHIRO
Application Number:
JP2015098627A
Publication Date:
September 01, 2016
Filing Date:
May 13, 2015
Export Citation:
Assignee:
YAMADA SEISAKUSHO KK
International Classes:
F04C2/344; F04C11/00
Domestic Patent References:
| JPH057982U | 1993-02-02 | |||
| JPS51146505U | 1976-11-25 | |||
| JP2011012575A | 2011-01-20 | |||
| JPS5677681U | 1981-06-24 |
Foreign References:
| US2641195A | 1953-06-09 |
Attorney, Agent or Firm:
Kunio Iwahori