Working vehicle having a mower unit vertically movable relative

Details Working vehicle having a mower unit vertically movable relative Working vehicle having a mower unit vertically movable relative

1991-04-02

1992-06-23

Bui, Thuy M.

Harvesters

Motorized harvester

With condition-responsive operation

A01D 6700

Patent

active

051232340

ABSTRACT:
A working vehicle has a grass cutting unit vertically movable relative to a vehicle body, a lift mechanism for raising and lowering the grass cutting unit, a clutch for making and breaking transmission of blade driving power to the grass cutting unit, and a device for controlling the lift mechanism. The control device controls the lift mechanism to lower the grass cutting unit when the clutch is operated to transmit power to the grass cutting unit, and to raise the grass cutting unit when the clutch is operated to break power tranmission to the grass cutting unit. According to this construction, only a device for actuating the clutch may be operated to switch between an operative condition in which the grass cutting unit is lowered and its cutting blades driven, and an inoperative condition in which the grass cutting unit is raised with the cutting blades stopped. Alternatively, the control device may control the clutch through a device for actuating the lift mechanism. In this case, only the device for actuating the lift mechanism may be operated to switch between the operative condition in which the grass cutting unit is lowered and its cutting blades driven, and the inoperative condition in which the grass cutting unit is raised with the cutting blades stopped.

REFERENCES:
patent: 3985196 (1976-10-01), Deschamps
patent: 4204383 (1980-05-01), Milliken, Jr.
patent: 4567719 (1986-02-01), Soots et al.
patent: 4573124 (1986-02-01), Seiferling

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