Dual rotor oil pump of an engine with balance weight...

Details Dual rotor oil pump of an engine with balance weight... Dual rotor oil pump of an engine with balance weight...

2011-07-26

2011-07-26

Kramer, Devon C (Department: 3746)

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

C418S025000, C418S151000

Reexamination Certificate

active

07985055

ABSTRACT:
A balance shaft function may be realized without employing a balance shaft, when an oil pump includes an inner rotor fixed to the rotation shaft and an outer rotor that rotates with the inner rotor if at least one rotor of the inner and outer rotors has a mass center formed apart from a rotation center.

REFERENCES:
patent: 2555678 (1951-06-01), Cornwell
patent: 3377846 (1968-04-01), De Coye De Castelet
patent: 5141418 (1992-08-01), Ohtaki et al.
patent: 6412280 (2002-07-01), Simonds
patent: 6494695 (2002-12-01), Lifson
patent: 6616433 (2003-09-01), Simonds
patent: 7037088 (2006-05-01), Shulver et al.
patent: 7108493 (2006-09-01), Clements et al.
patent: 7306440 (2007-12-01), Amano
patent: 58096191 (1983-06-01), None
English Abstract of JP58096191A.
Englsih Abstract of JP58096191A published in Jun. 1983.

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