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:
Apr. 23, 2002
Filed:
Jul. 18, 2000
Heinrich Scheid, Blieskastel, DE;
Bernd Rabe, Dellfeld, DE;
Deere & Company, Moline, IL (US);
Abstract
A vehicle includes a variable speed hydrostatic transmission which drives through a gear transmission, having selectable gear ratios, to provide propulsion power to a pair of drive wheels. The hydrostatic transmission is used as a brake to supplement the braking ability of the vehicle. The gear transmission is provided with a positioning plate which is mounted for pivoting between respective positions corresponding to different transmission gear ratios in response to a gear shift lever being moved between corresponding positions. Provided for ensuring that the gear transmission is not shifted to neutral while the vehicle is in motion, and the consequent loss of the ability of the hydrostatic transmission to provide braking, is a blocking arrangement, including a vehicle motion responsive sensor, that operates to prevent the movement of the positioning plate, so long as the vehicle is in motion.