Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1976-12-02
1978-06-27
Hoffman, Drayton E.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
180 14R, B60P 104
Patent
active
040969614
ABSTRACT:
A powered dual walkie/rider low lift transporter type truck especially for slip sheet pallet handling in which one tractor portion is supported from a single drive-steer wheel at one end, a second tractor portion is supported from a dual caster wheel at a corresponding one end, and load wheels at the other end of each truck are pivoted from a relatively short length L-shaped platform or frame and are actuatable to lift and lower the platform by actuator-linkage means on each truck. The trucks are coupled together lengthwise of adjacent inner sides thereof. A pair of channel members are located intermediate the drive-steer and load wheels of the one truck and between the caster and load wheels of the other truck, each having stop members secured therein and camming or open portions formed at the bottom of the rear flanges. A load supporting relatively long L-shaped platform or frame is mounted in each pair of channel members by pairs of upper and lower guide rollers; each platform overlaps, extends forwardly of and is elevatable in a horizontal plane with the corresponding short platform to transport a load. Lowering either short platform effects a forward tilting of the corresponding long platform to form a ramp thereof with the floor as the upper guide rollers contact the stop members and the lower guide rollers project into the open portions of the rear flanges while the corresponding load wheels project into openings formed in the long platform. A known push-pull device is mounted on the carriage of the long platform of each truck for slip sheet pallet handling. Both independent and dual controls are provided for the push-pull devices of the trucks, and independent rider and pedestrian drive controls are provided on the one tractor portion for the operator of the side-by-side coupled trucks.
REFERENCES:
patent: 3572444 (1971-03-01), Scholl
patent: 3601210 (1971-08-01), Stedman
patent: 3661214 (1972-05-01), Peterson et al.
Moto-Truc Otis Elevator Co., MTP-WJ, May 28, 1976.
Clark Equipment Company
Hoffman Drayton E.
Wiessler John C.
Williams Lawrence E.
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