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:
Jul. 01, 1997
Filed:
Nov. 21, 1995
Applicant:
Inventors:
Patric Lardy, Weil der Stadt, DE;
Joseph Petersmann, Wimsheim, DE;
Assignee:
Dr. Ing. h.c.F. Porsche AG, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; B60K / ;
U.S. Cl.
CPC ...
74335 ; 7433 / ; 477 46 ; 477 48 ; 477162 ;
Abstract
A control system and process for an infinitely variable transmission which has a first operating mode which automatically selects the transmission ratio, and a second operating mode in which the transmission ratio can be selected directly by the driver. According to the invention, the degree of damping effective during the adjustment of the transmission ratio is adjusted in response to the selected operating mode. In the automatic operating mode, a high degree of damping is used, while in the manual operating mode, a lower degree of damping is provided.