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. 20, 1983
Filed:
Dec. 08, 1981
Wulf Leitermann, Bad Wimpfen, DE;
Abstract
A valve controlled stroke piston combustion engine is provided with a cam shaft which supports a number of cams equal in number to the inlet and outlet valves. The individual cylinders are switched off by closing the associated inlet and outlet valves. The cams are associated with the valves and are rotatably mounted and axially non-displaceable on the cam shaft. Dogs are fixedly mounted on said cam shaft and cooperate with said cams. Each cam is provided with a front face having a concentric annular section groove with a continuously increasing depth with respect to the rotating axis of the cam shaft. The annular section groove ends have a radial abutment face; and each dog is provided with an axial protrusion on a front face facing the corresponding cam with the protrusion engaging on the abutment face during a switched on valve. Pretensionable springs are provided for the engagement and disengagement of dogs.