Land vehicles – Wheeled – Tiltable vehicles – stabilized by attendant or article
Patent
1993-03-05
1993-09-21
Camby, Richard M.
Land vehicles
Wheeled
Tiltable vehicles, stabilized by attendant or article
280 4728, 280652, B62B 104
Patent
active
052462390
ABSTRACT:
A manually operated hand truck provides for the level carriage of a load supported on the platform thereof by allowing the platform support bar to pivot relative to the handle and central portion of the apparatus. A spring connects the platform with the central portion of the apparatus to draw the handle to a vertical position when the platform is resting on the surface. However, the spring is of insufficient tension to raise the platform when the handle is tilted downward from the vertical, thus allowing the platform to remain on the surface. The platform may thus be slipped under a cooperating pallet supporting a load thereon, or other load, and the handle tilted back without displacing the platform and the load thereon from a level attitude. Thus, loads may be transported by pushing or pulling on the inclined handle, without displacing the load from the horizontal or spilling the load. The hand truck also provides increased stability due to a relatively wide span between wheels, and by allowing the axle to be upwardly displaced in a series of axle passages, providing for the installation of larger wheels without raising the center of gravity.
REFERENCES:
patent: 1299829 (1919-04-01), Goodyear
patent: 3467405 (1969-09-01), Fogg
patent: 3698736 (1972-10-01), Shape
patent: 4048735 (1977-09-01), Bruntg
patent: 4826388 (1989-05-01), Golding
patent: 5123666 (1992-06-01), Moore
Camby Richard M.
Litman Richard C.
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