Land vehicles – Wheeled – Extensible
Patent
1983-03-17
1985-09-17
Bertsch, Richard A.
Land vehicles
Wheeled
Extensible
280 472, 280 528, B62D 110, B62D 6112
Patent
active
045416443
ABSTRACT:
A manual utility cart including a frame having spaced cargo retaining portions and a lower portion. An axle journaled in the lower portion of said frame journals a first set of wheels. A second set of wheels is journaled on an axle spaced from and supported by said first axle and is shiftable about the first axle between a retracted position and a frame supporting position to raise the first set of wheels from a surface. A cover overlies both sets of wheels to support a cargo within the frame.
REFERENCES:
patent: 2616720 (1952-11-01), Knoth
patent: 2925283 (1960-02-01), Stilger
patent: 3499658 (1970-03-01), Fernholz et al.
patent: 3677573 (1972-07-01), Chin
Bertsch Richard A.
Knoblock Eugene C.
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