Oil pump adapted to prevent leakage without using sealing...

Details Oil pump adapted to prevent leakage without using sealing... Oil pump adapted to prevent leakage without using sealing...

2005-07-21

2008-05-20

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Specific material

C418S032000, C418S132000, C418S171000

Reexamination Certificate

active

07374411

ABSTRACT:
An oil pump is provided which includes a cam ring made of a material having a first line expansion coefficient, a pump element rotatably disposed in the cam ring and smaller in an axial length than the cam ring, a first housing member disposed on one of axially opposite sides of the cam ring and made of a material having a second line expansion coefficient larger than the first line expansion coefficient, and a second housing member disposed on the other of the axially opposite sides of the cam ring and made of a material having a third line expansion coefficient than the first line expansion coefficient.

REFERENCES:
patent: 4492545 (1985-01-01), Mochizuki et al.
patent: 5876192 (1999-03-01), Follmer
patent: 6402488 (2002-06-01), Watanabe et al.
patent: 2006/0140811 (2006-06-01), Bachmann et al.
patent: 103 31 979 (2005-02-01), None
patent: 58-183992 (1983-12-01), None
patent: 62048983 (1987-03-01), None
patent: 62-223487 (1987-10-01), None
patent: 06085284 (1994-03-01), None
patent: 08042418 (1996-02-01), None
patent: 2001193669 (2001-07-01), None

Affiliated with

Also associated with

Rating

Oil pump adapted to prevent leakage without using sealing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oil pump adapted to prevent leakage without using sealing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil pump adapted to prevent leakage without using sealing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3982228