Land vehicles – Step or abutment ascending type vehicle – With skid or rollerway
Patent
1982-09-27
1985-03-12
Mitchell, David M.
Land vehicles
Step or abutment ascending type vehicle
With skid or rollerway
280 4727, 280 4737R, B62B 502
Patent
active
045040710
ABSTRACT:
A wheeled hand truck of the type having an elongated frame with a load engaging platform and a set of wheels near one end and user handles near the other end includes a stairstep engaging leg which is pivotally mounted on the frame intermediate the ends and selectively movable between a stowed position and an extended position where the leg will selectively engage a step and prevent sliding movement of the truck down a flight of steps. An auxiliary handle is also provided to aid movement of loads along staircases with that auxiliary handle being selectively movable between a retracted position where the truck may be used in a conventional manner and an operative position extending obliquely from the frame from the end opposite the platform to provide a user with a more readily accessible gripping region when moving the truck along a flight of steps. A spring clip is provided for maintaining the leg in its retracted position during periods of non-use and the auxiliary handle is spring loaded toward its retracted position so that the hand truck may be used in a conventional manner yet readily converted for moving loads along staircases.
REFERENCES:
patent: 836921 (1906-11-01), Chase et al.
patent: 2519113 (1950-08-01), Cohn
patent: 2800337 (1957-07-01), Avril
patent: 3647236 (1972-03-01), Hayes
patent: 3684307 (1972-08-01), Bourgraf et al.
patent: 4130291 (1978-12-01), Saethre et al.
patent: 4275894 (1981-06-01), Mortenson
Gust George A.
Mitchell David M.
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