U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Oil supply system for engine

Patent 7011069 Issued on March 14, 2006. Estimated Expiration Date: Icon_subject November 1, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3067689

Oil pump system
Patent #: 5547349
Issued on: 08/20/1996
Inventor: Kimura, et al.

Three stage self regulating gerotor pump Patent #: 5722815
Issued on: 03/03/1998
Inventor: Cozens

Inventors

Application

No. 10978038 filed on 11/01/2004

US Classes:

123/196R, LUBRICATORS417/282Plural separate sensing means for a single fluid controller

Examiners

Primary: Yuen, Henry C.
Assistant: Ali, Hyder

Attorney, Agent or Firm

Foreign Patent References

  • 1 145 929 DE 07/01/1955
  • 2598994 JP 12/01/1993
  • 8-114186 JP 08/01/1995
  • 8-210116 JP 10/01/1995

International Class

F01M 1/00

Abstract

An oil supply system for an engine includes a pump body provided with a first outlet port and a second outlet port. The oil supply system further includes a hydraulic-oil-delivery passage, a first oil passage, a second oil passage and a return hydraulic passage. The valve body divides a hydraulic-oil receiving portion for receiving the hydraulic oil in the hydraulic-pressure control valve chamber into a first valve chamber and a second valve chamber. When the hydraulic pressure oil delivered to the hydraulic-oil-delivery passage is in a predetermined value, the hydraulic oil discharged out of the second outlet port is delivered to the hydraulic-oil-delivery passage via the first valve chamber. When the hydraulic pressure delivered to the hydraulic-oil-delivery passage exceeds the predetermined value, the hydraulic oil discharged out of the second outlet port is delivered to the hydraulic-oil-delivery passage via the second valve chamber.

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