VANE PUMP - KAYABA INDUSTRY CO LTD

Title:

VANE PUMP

Document Type and Number:

WIPO Patent Application WO/2014/132977

Kind Code:

A1

Abstract:

A vane pump equipped with: a rotor; slits formed at the outer periphery of the rotor; vanes mounted in the slits; a cam ring having an inner circumferential cam surface with which the tips of the vanes make sliding contact; pump chambers formed between and defined by the rotor, the cam ring, and adjacent vanes; a side member having a sliding surface with which the side surface of the rotor makes sliding contact; discharge ports that are formed so as to open in the side member and that guide a working fluid discharged from the pump chambers; and notches provided in the side member and extending from the openings of the discharge ports toward the rear in the direction of rotation of the rotor. The notches are formed on the outside of protruding parts of the rotor in the radial direction.

Inventors:

SHIMONO HIROMI (JP)
FUJITA TOMOYUKI (JP)
SUGIHARA MASAMICHI (JP)
MAKI YOSHIYUKI (JP)

Application Number:

PCT/JP2014/054613

Publication Date:

September 04, 2014

Filing Date:

February 26, 2014

Export Citation:

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Assignee:

KAYABA INDUSTRY CO LTD (JP)

International Classes:

F04C2/344; F04C15/06

Domestic Patent References:

WO2008038638A1

2008-04-03

Foreign References:

JP2012137047A	2012-07-19
JPH0243485U	1990-03-26
JP2010127214A	2010-06-10
JP2001248569A	2001-09-14

Other References: