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:
Mar. 27, 1984
Filed:
Mar. 10, 1981
Applicant:
Inventor:
Dieter Schmidt, Gifhorn, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74867 ; 74877 ; 74731 ; 74732 ; 7475 / ;
Abstract
A control system for a hydrodynamic-mechanical transmission of the type having a by-pass clutch to by-pass the hydrodynamic torque converter includes a main control valve to disengage the forward gear clutch element and thereby the engine from the driving wheels when the accelerator pedal is released. At the same time, the main control valves causes the by-pass clutch, if engaged, to disengage. When the accelerator pedal is depressed, the forward gear clutch element re-engages as well as the by-pass clutch, but since the by-pass clutch is still disengaged at the time the forward gear clutch element re-engages, the jerking motion that may otherwise occur is absorbed in the hydrodynamic torque converter.