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Patent Searching and Data


Title:
VARIABLE-CAPACITY VANE PUMP
Document Type and Number:
WIPO Patent Application WO/2014/050724
Kind Code:
A1
Abstract:
A variable-capacity vane pump, provided with: a rotor that is rotationally driven; a plurality of vanes slidably accommodated in the rotor; a cam ring having an inner circumferential cam surface against which the distal ends of the vanes slide, the cam ring being capable of being eccentric with respect to the center of the rotor; a pump chamber defined between the rotor, the cam ring, and adjacent vanes; a suction port for guiding the working fluid suctioned into the pump chamber; and a discharge port for guiding the working fluid discharged form the pump chamber. The outer periphery of the opening part of the suction part is formed so as to be positioned along the inner circumferential cam surface or further outwards in relation to the inner circumferential cam surface of the cam ring irrespective of the amount of eccentricity of the cam ring with respect to the rotor.

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JPS54152704ROTARY VANE MOTOR
Inventors:
FUJITA, Tomoyuki (World Trade Center Bldg., 4-1, Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
SUGIHARA, Masamichi (World Trade Center Bldg., 4-1, Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
AKATSUKA, Koichiro (World Trade Center Bldg., 4-1, Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
KATO, Fumiyasu (World Trade Center Bldg., 4-1, Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
Application Number:
JP2013/075434
Publication Date:
April 03, 2014
Filing Date:
September 20, 2013
Export Citation:
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Assignee:
KAYABA INDUSTRY CO., LTD. (World Trade Center Bldg, 4-1 Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
International Classes:
F04C2/344; F04C15/00
Foreign References:
JP2003097454A2003-04-03
JP2003097453A2003-04-03
JPH1113646A1999-01-19
JP2011157826A2011-08-18
JP2008215189A2008-09-18
Attorney, Agent or Firm:
GOTO, Masaki et al. (GOTOH & PARTNERS, Shoyu-Kaikan 3-1, Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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