Land vehicles – Wheeled – Extensible
Patent
1981-07-17
1983-11-01
Mitchell, David M.
Land vehicles
Wheeled
Extensible
280 4737R, 280 474, 280650, 280658, 297 46, B62B 708
Patent
active
044126883
ABSTRACT:
The structure includes two flat side frames connected by crosspieces, each of which has a pair of shafts pivoted together and provided with wheels; a slide is slidable on one of these by the action of rotation of a third shaft pivoted on one of the preceding ones and controls, by a connection element, the associated rotation of the two first shafts to vary their relative angular positions.
REFERENCES:
patent: 3873116 (1975-03-01), Perego
patent: 4173355 (1975-11-01), Perego
Huggins Pierre
Mitchell David M.
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