Power lawnmower with hydrostatic drive
US4787195A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jun 17, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A self-propelled lawnmower having a hydrostatic transmission and a differential mechanism to power the 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 rear drive wheels, with right and left brake levers situated adjacent the operator hand grips. The 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.