Title:
ギヤポンプ及びブレーキ装置用ギヤポンプ
Document Type and Number:
Japanese Patent JP4842341
Kind Code:
B2
Abstract:
A gear pump includes: a drive shaft; a first gear; a second gear; a first plate disposed between the first gear and the second gear, and arranged to liquid-tightly seal the first surfaces of the first and second gear; a pair of second plates disposed, respectively, on the second surfaces of the first and second gears, and arranged to liquid-tightly seal the second surfaces of the first and second gears, each of the second plates including a tooth top sealing portion having a seal surface arranged to seal a tooth top of the first gear and a tooth top of the second gear, and to form a suction portion with the first plate and the second plate; and an urging member arranged to urge the drive shaft toward the seal surface of the tooth top sealing portion of one of the first and second plates.
Inventors:
Chiharu Nakazawa
Yoshiki Sakamoto
Ryohei Maruo
Toshihiro Koizumi
Yoshiki Sakamoto
Ryohei Maruo
Toshihiro Koizumi
Application Number:
JP2009069563A
Publication Date:
December 21, 2011
Filing Date:
March 23, 2009
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F04C2/18; F04C15/00
Domestic Patent References:
| JP2005315226A |
Attorney, Agent or Firm:
Masamichi Ayata