Fire escape – ladder – or scaffold – Convertible
Patent
1979-03-20
1981-03-03
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Convertible
182 82, 280 30, 280 4719, B62B 112
Patent
active
042535468
ABSTRACT:
A hand truck comprises a frame having handles at its rear end, wheels attached at least to the front end of the frame on opposite sides of its bottom, and a load support provided on the upper side of the frame and mounted on the frame shiftably longitudinally of the frame. Loads can be transferred from the truck, for example, to the bed of a light van positioned at some distance above the ground or from the bed to the truck by raising or turning down the truck on the principle of the lever, with the load support attached to the frame at a position corresponding to the level of the bed. The truck can be connected in a slanting position to the bed by a connector attached to the rear end of the frame to take loads from the vehicle along the truck as by a chute. The frame is foldable into two. The truck is usable also as a stepladder when the frame is held in an inverted V-shaped half-unfolded position by a holder.
REFERENCES:
patent: 1341171 (1920-05-01), Hall
patent: 2199306 (1940-04-01), Earle
patent: 2907402 (1959-10-01), Lewis
patent: 3430972 (1969-03-01), Fiedler
patent: 3712496 (1973-01-01), Miller
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