Harvesters – Motorized harvester – With selective control of drive means
Patent
1991-03-25
1992-01-07
Bagnell, David J.
Harvesters
Motorized harvester
With selective control of drive means
56 113, 56 115, 180 632, 180 191, A01D 3468
Patent
active
050779591
ABSTRACT:
An extra-wide self-propelled lawn mower employs twin hydrostatic transmissions to power left and right drive wheels situated behind a forward mowing deck. There are left and right primary speed control levers adjacent hand grips on the mower hand assembly. These have linkages that include a common pivot shaft and respective spring couplings to control the actuator arms of the hydrostatic transmissions. Secondary speed control levers, in the form of brake levers, are mounted adjacent the right and left hand grips and are non-resiliently coupled to the hydrostatic transmission actuators arms. The secondary levers are squeezed to override the primary speed control and slow the respective transmission for braking or to effect a turn, pivoting about the inside wheel. Squeezing the secondary control lever completely will cause the wheel on that side to reverse, effecting a pivoting at the center of the mower.
REFERENCES:
patent: 4787195 (1988-11-01), Wenzel
patent: 4920733 (1990-05-01), Berrios
patent: 4920734 (1990-05-01), Wenzel
patent: 4967543 (1990-11-01), Scag et al.
patent: 4991382 (1991-02-01), Scag
patent: 5020308 (1991-06-01), Braun et al.
Bagnell David J.
Ferris Industries, Inc.
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