Stair-climbing carrier

Details Stair-climbing carrier Stair-climbing carrier

1975-11-10

1977-06-07

Goodman, Philip

Land vehicles

Step or abutment ascending type vehicle

With endless track

180 922, B60P 900

Patent

active

040278891

ABSTRACT:
A tracked, stair-climbing carrier for carrying loads up and down stairs and across floors. The carrier includes a frame mounting a pair of parallel endless tracks at its sides for moving the frame forwardly and rearwardly along a floor and up and down stairs. An upper, load-receiving deck is slideably carried by the frame and is movable forwardly and rearwardly to adjust the center of gravity of the carrier and load and permits the rearward end of the deck to rest upon the floor when the frame has been tilted to an acute angle with the floor. A load-bearing lifting arm, receivable in the frame between the tracks, may be swung downwardly to cause the forward end of the frame to tilt upwardly at an acute, stair-engaging angle to the floor, the tilted frame with the deck and load being supported rearwardly by the tracks or supplemental wheels and forwardly by casters at the forward, downwardly swung end of the lifting arm, whereupon the tilted, fully supported and balanced load may be moved along the floor with the tracks in position to engage stairs, ramps, curbs, etc.

REFERENCES:
patent: 2928501 (1960-03-01), Ramirez
patent: 3713501 (1973-01-01), Hurt
S.I.M. Equipment Limited "Alouette" Mar. 30, 1964.

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