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. 30, 1992
Filed:
Aug. 10, 1990
Applicant:
Inventors:
Helmut Bender, Pleidelsheim, DE;
Hans Merkle, Stuttgart, DE;
Gerhard Spengler, Herrenberg, DE;
Wolfgang Zaiser, Steinheim, DE;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74359 ; 74333 ; 74745 ;
Abstract
A change-speed gearbox having two countershaft transmission each connected by a frictional driving clutch to an input shaft and having a single common countershaft. Two gear wheel stages of the countershaft transmissions can be optionally connected into the driving connection between the input and output shafts by a change-speed clutch. One of the two gear wheel stages of one countershaft transmission is allocated to the reverse gear, and one of the two gear wheel stages of the other countershaft transmission is used both in reverse gear and in second gear.