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:
May. 04, 1976
Filed:
May. 19, 1975
Alfred Sigmund Smemo, Dubuque, IA (US);
Deere & Company, Moline, IL (US);
Abstract
A vehicle, such as a crawler tractor or the like, includes separate reversible hydrostatic transmission units which are adapted for driving the tracks of the tractor. The transmission units are controlled through means including a valve assembly actuated by a first manually operable linkage for simultaneously effecting changes in the speed and direction of rotation of the units, and through means of a pair of second manually operable linkages for in effect overriding the transmission condition selected by the first manually operable linkage by selectively retarding the speed of and/or changing the direction of rotation of the hydrostatic motors for effecting steering of the vehicle.