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:
Nov. 14, 1989
Filed:
Nov. 28, 1988
Philip H Wenzel, Vernon Center, NY (US);
Ferris Industries, Inc., Oneida, NY (US);
Abstract
A self-propelled lawnmower employs a hydrostatic transmission and differential to power rear drive wheels which are situated behind a forward mowing deck. The hydrostatic drive has infinitely variable adjustment of speed from reverse, through neutral, to a maximum forward speed. There are independently actuated disc brakes for the drive wheels, with right and left brake levers situated adjacent the operator hand grips. A vertical shaft engine is situated with its center of gravity behind the drive wheel shaft to balance the weight of the mowing deck. The operator can control the speed and direction of the mower without removing his hands from the hand grips. By selecting actuation of the disc brakes, the machine can be effortlessly turned without a reduction in speed. The engine output shaft has pulleys connected by drive belts to the blades and to the hydrostatic drive.