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:
Jun. 28, 1994
Filed:
Apr. 19, 1993
Applicant:
Inventor:
Werner Mollers, Wiernsheim, DE;
Assignee:
Dr. Ing. H.C.F. Porsche AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ; F16H / ;
U.S. Cl.
CPC ...
123 9015 ; 123 9031 ; 474110 ; 474111 ; 474136 ;
Abstract
For adjusting the relative rotating position of a camshaft of a reciprocating engine with respect to a second camshaft, a tensioning arrangement of the chain which winds around both camshafts is displaced transversely to the chain. The tensioning arrangement includes two hydraulic pistons which can be moved in mutually opposite directions, are braced with respect to one another by a helical spring and, for the adjusting, can be alternately acted upon by hydraulic pressure. The adjusting force acting upon the hydraulic pistons counteracts the spring force applied to the hydraulic pistons.