Harvesters – Motorized harvester – With selective control of drive means
Patent
1989-10-10
1990-11-06
Bui, Thuy M.
Harvesters
Motorized harvester
With selective control of drive means
56 109, 56 111, A01D 7502, A01D 6900
Patent
active
049675435
ABSTRACT:
A lawn mower has a hydraulic motor mounted on each drive wheel and each motor is independently driven by a separate pump. Each pump includes a control lever for regulating fluid pressure and flow direction so that each wheel may be driven independently in the forward and reverse directions and at varying speeds. A speed control index is mounted on one side of the mower for releasably setting and maintaining the speed control levers in a plurality of equal forward speed positions so that the operator can preset the maximum forward speed. In addition, an individual speed control lever is mounted on each handgrip and each is independently coupled to one of the control levers for individually adjusting each wheel for speeds less than the preset maximum or for setting either wheel drive pump in neutral or reverse. A neutral control assembly returns the pump control levers to a neutral position when the control levers are moved into neutral.
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patent: 3616869 (1971-11-01), Rilling
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patent: 4787195 (1988-11-01), Wenzel
patent: 4835949 (1989-06-01), Seyerle
Scag Dane T.
Sugden David
Bui Thuy M.
Scag Power Equipment, Inc.
Wiviott Fred
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