Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/077398
Kind Code:
A1
Abstract:
A hollow seal member, which makes contact via an elastic body within a shaft hole formed in a housing and makes sliding contact with the outer circumference of a drive shaft, thereby sealing against the leakage of liquid from a pump chamber, is equipped with: a seal part that is formed at an area at one end and makes sliding contact with the outer circumference of the drive shaft at the inner circumferential surface of the hollow part; and a rotation-stopping part that is formed at an area at the other end and restricts movement in the direction of rotation of the drive shaft. The rotational resistance of the rotation-stopping part with respect to the drive shaft is set to less than the rotational resistance of the seal part.

Inventors:
NAKAZAWA CHIHARU (JP)
MISUNOU MASAKI (JP)
Application Number:
PCT/JP2012/080291
Publication Date:
May 30, 2013
Filing Date:
November 22, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F04C15/00; F04C2/10; F04C2/18
Foreign References:
JP2010116948A2010-05-27
JP2000054968A2000-02-22
JP2011058588A2011-03-24
JP2009108688A2009-05-21
JPS58194286U1983-12-24
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Download PDF:
Claims: