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. 19, 1993
Filed:
Feb. 17, 1993
Irvin Bornstein, Tallahassee, FL (US);
Thomas B Middlebrooks, Tallahassee, FL (US);
Scott M Eddy, Tallahassee, FL (US);
Charles E Benedict, Tallahassee, FL (US);
Bornstein Motor Company, Inc., Tallahassee, FL (US);
Abstract
A mechanism for controlling the duration of the opening of the intake valve of an internal combustion engine which includes a split cam having a first lobe which is fixed to a primary cam shaft that is drivingly connected to the engine's crankshaft and a second lobe which is freely mounted to the primary cam shaft and which is driven by gears of an auxiliary cam shaft which is axially shiftable, or a segment thereof shiftable, to rotate the second cam lobe relative to the first lobe of the split cam to thereby change the angular relationship between the first and second lobes to advance or retard the closing of the intake valve.