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. 07, 1999
Filed:
Jun. 06, 1997
Applicant:
Inventor:
Heinz Weiss, Bensheim, DE;
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
475-5 ; 477-3 ; 180 652 ;
Abstract
A vehicle drive system includes a generator driven by an internal combustion engine and a drive axle having a pair of wheels, each wheel being driven by an associated electric motor powered by the generator. The engine also drives a drive shaft which is coupled to the drive axle. The drive system also includes a pair of summing gears, each having an output shaft coupled to a respective wheel, and each summing gear having a first input coupled to the drive shaft and a second input coupled to the respective electric motor.