Transport apparatus especially for goods, capable of travelling

Details Transport apparatus especially for goods, capable of travelling Transport apparatus especially for goods, capable of travelling

1979-06-04

1982-01-12

Silverstrim, John P.

Land vehicles

Step or abutment ascending type vehicle

Relatively movable running gear portions

280 4724, 280 4737R, 280 39, B62B 502

Patent

active

043101666

ABSTRACT:
A transport apparatus having a loading bridge, is movable by hand for transporting loads over stairs. There are two front rollers (3), which are either extendable or variable in their angular position, and two rear rollers (7), which are secured to downwardly extending arms (6). The loading bridge (1) takes up a rearwardly tilted position when the transport apparatus rests with the rollers (3, 7) on a horizontal surface. The spacing between the front and rear rollers (3, 7) and the roller diameters are selected so that, when climbing a stair, the front rollers (3) rest on an upper tread while the rear rollers (7) simultaneously rest on a lower tread. When the apparatus is not in use, it may be folded to take up but a small space by folding the tiltable hand levers (14) inwardly and by tilting the arms (6) upwardly.

REFERENCES:
patent: 308362 (1884-11-01), Hughes
patent: 314185 (1885-03-01), Knowlton
patent: 355192 (1886-12-01), Merrill
patent: 672152 (1901-04-01), Ruher
patent: 1090511 (1914-03-01), Adams
patent: 2651525 (1953-09-01), Achee
patent: 3836160 (1974-09-01), Linsley

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