Title:
ギヤポンプ
Document Type and Number:
Japanese Patent JP4649520
Kind Code:
B2
Abstract:
A gear pump includes: a first pump constructed from a first drive gear rotated by driving of a drive shaft and a first driven gear rotatably arranged coaxially with a rotary shaft; and a second pump constructed from a second drive gear rotatably provided coaxially with the rotary shaft and a second driven gear. The rotary shaft allows the first driven gear and the second drive gear to engage with and disengage from each other in a rotation direction by movement to an axial direction. When the discharge pressure is higher than predetermined pressure, rotation of the first driven gear is not transmitted to the second drive gear and only the first pump operates. When the discharge pressure becomes the predetermined pressure or less, the rotation of the first driven gear is transmitted to the second drive gear and the first and the second pumps operate.
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Inventors:
Yuichi Hidaka
Application Number:
JP2009095722A
Publication Date:
March 09, 2011
Filing Date:
April 10, 2009
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F04C14/00; F04C2/18; F04C14/02; F04C15/00
Domestic Patent References:
| JP3731927B2 |
Attorney, Agent or Firm:
Yoshihito Iizuka
Hideo Hayashi
Ryohei Kaizuka
Hideo Hayashi
Ryohei Kaizuka