Harvesters – Motorized harvester – With condition-responsive operation
Patent
1991-06-26
1994-09-06
Bagnell, David J.
Harvesters
Motorized harvester
With condition-responsive operation
56DIG15, 172 2, 460 1, A01D 4502, A01D 7518
Patent
active
053436750
ABSTRACT:
A motion sensing safety interlock which disables one or more equipment elements of a ground-traveling machine upon stopping or slowing of the machine below a preselected ground speed. A speedometer cable interconnects a wheel of the machine and a monitor box in which is mounted for rotation by the cable a ferrous star wheel. Lobes of the star wheel pass between poles of a magnetic reed switch which changes state at a frequency corresponding to the rotational speed of the wheel. Electrical circuitry monitors the reed switch and disengages an electric clutch to stop the equipment elements upon the stopping of ground travel of the machine.
REFERENCES:
patent: 3773156 (1973-11-01), Nyquist
patent: 4323136 (1982-04-01), van der Lely et al.
patent: 4878338 (1989-11-01), Aldred et al.
patent: 5025614 (1991-06-01), Orsborn et al.
Bagnell David J.
Herink Kent A.
Laurenzo Brian J.
Trout Brett J.
Vermeer Manufacturing Company
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