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:
Oct. 16, 1984
Filed:
Aug. 31, 1982
Applicant:
Inventor:
John K Williams, Atlanta, GA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9012 ; 123 9015 ;
Abstract
A device is described for controlling the intake and exhaust valves of an internal combustion engine. Separate valve actuators are provided for opening and closing the intake and exhaust valves of each cylinder of an engine. Each such actuator is connected to a pair of cam actuated pumps for providing timed pulses of pressurized fluid to the valve actuators. The cams which actuate the pumps are turned by a planetary gear mechanism which permits the incidence of pump actuation in relation to the rotation of a shaft turned by the engine to be varied. The device permits close, precise and variable control of the valve timing of the engine to thereby achieve enhanced engine performance.