Harvesters – Motorized harvester – With selective control of drive means
Patent
1989-09-15
1990-05-01
Bui, Thuy M.
Harvesters
Motorized harvester
With selective control of drive means
56 113, 56 115, 56 118, A01D 6906
Patent
active
049207342
ABSTRACT:
A self-propelled lawn mower 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 independent disc brakes for the drive wheels, with right and left brake levers situated adjacent the operator hand grips. An engine has its center of gravity behind the drive wheel shaft to balance the weight of the mowing deck. Left and right thumb-operated control levers are rockably mounted on the handle bar assembly, adjacent the inboard side of the right and left hand grips. This arrangement permits one-hand control of the transmission speed with either hand, while actuating the respective brake lever with the same hand, making one-hand brake-turning of the mower possible. The engine output shaft has a pulley connected by belt drives to the blades and to the hydrostatic drive.
REFERENCES:
patent: 2689620 (1954-09-01), Hainke
patent: 2805536 (1957-09-01), De Vere Harnett
patent: 2818699 (1958-01-01), Clemson
patent: 3742685 (1973-07-01), Lian
patent: 4326368 (1982-04-01), Hoff
patent: 4454706 (1984-06-01), Geeck, III
patent: 4551967 (1985-11-01), Murcko
patent: 4558558 (1985-12-01), Horner
patent: 4787195 (1988-11-01), Wenzel
Bui Thuy M.
Ferris Industries, Inc.
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