The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1991
Filed:
Jul. 24, 1990
Applicant:
Inventors:
Takeomi Yamamoto, Nishio, JP;
Nariaki Endo, Osaka, JP;
Yasushi Kadota, Osaka, JP;
Tadasu Yamakawa, Osaka, JP;
Assignee:
Otai Tekko Kabushiki Kaisha and Koyo Seiko Co., Ltd., Nishio and Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01M / ; F01L / ;
U.S. Cl.
CPC ...
123 9035 ; 123 9055 ; 123 9056 ;
Abstract
A hydraulic valve lifter for use in an internal combustion engine, comprises an inverted cup-like body, an inverted cup-like plunger housed within the body, a high pressure chamber defined between the body and the plunger, and an oil passage through which an oil is fed to the high pressure chamber. At least one oil discharge hole is defined in the plunger and extends from the oil passage to open to a valve stem so as to lubricate between the valve stem and a valve guide.