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:
Sep. 23, 1980
Filed:
Dec. 01, 1978
Applicant:
Inventors:
Donald J Pozniak, Utica, MI (US);
Ronald J Herrin, Clawson, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9016 ; 123 9055 ;
Abstract
A hydraulic valve lifter for an internal combustion engine is provided with a thin flexible valve disc, with a sharp edge orifice therethrough, that is operative to sense the oil flow rate between a hydraulic supply chamber and a pressure chamber within the lifter whereby to regulate the volume capacity of the pressure chamber and therefore the axial extent of the valve lifter as a function of engine speed.