Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1986-05-08
1987-10-13
Spar, Robert J.
Material or article handling
Vertically swinging load support
Shovel or fork type
123198DC, 180273, B66C 2388, F02B 7700
Patent
active
046995617
ABSTRACT:
An engine interlock control system is disclosed which is particularly suited for use with a material handling implement comprising a combination loader backhoe. In the preferred form, the present control system includes an electrically-operated fuel solenoid for selectively controlling delivery of fuel to the internal combustion engine of the implement. This system further includes means for sensing operation of the engine, preferably comprising an oil pressure sensor, and means for sensing disposition of the implement's transmission in a neutral condition. The fuel solenoid, engine sensor, and transmission sensor are all operatively connected with a microprocessor control unit, whereby delivery of fuel to the engine is prevented in the event that the engine is not running, and the transmission is in a non-neutral condition. In a preferred embodiment, the present control system further includes means for sensing that the implement is in a condition for backhoe operation, with such sensing means further operatively connected with the microprocessor controls for preventing engine operation when (1) the implement is in a backhoe-operating condition, and (2) the implement transmission is in a non-neutral condition.
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Alexander Jay I.
J. I. Case Company
Spar Robert J.
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