Land vehicles – Wheeled – Nesting vehicles
Patent
1990-06-08
1991-07-23
Kashnikow, Andres
Land vehicles
Wheeled
Nesting vehicles
280 4716, B62B 300
Patent
active
050337572
ABSTRACT:
A trolley has a pair of front and a pair of rear wheels disposed symmetrically on a chassis relative to a longitudinal axis thereof for ground engaging rotation in a common plane. The chassis incorporates a guide wheel located intermediate the front and rear wheels for ground engaging rotation about a horizontal lateral axis disposed at right angles to the longitudinal axis; a mounting for the guide wheel comprising an arm having a first end, a seocnd end and a section intermediate these ends, the first end bearing the guide wheel; the intermediate section incorporating an attachment to the chassis enabling the guide wheel to be displaced angularly about an axis parallel to the lateral axis, a resilient loading mechanism acting to resiliently bias the guide wheel, by way of the mounting, downwardly into ground engagement in the common plane; and a raising device for the guide wheel acting by way of the mounting such that, on the trolley being closely stacked with a similar trolley, the raising device causes the guide wheel to be raised out of ground engagement.
REFERENCES:
patent: 2935331 (1960-05-01), Ledgerwood
patent: 4826186 (1989-05-01), Hagelin
patent: 4861049 (1989-08-01), Losi
Kashnikow Andres
Mar Michael
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