Wheeled chassis
AssigneePermobil AB
InventorBo H. S. Engman
Life of this patent
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Abstract
A manoeuverable, motor-driven wheeled chassis includes a chassis structure carrying two pairs of support wheels (N.sub.1, M.sub.1) separated in the longitudinal direction of the chassis. Between the pairs of support wheels there is a pair of drive wheels (L.sub.1). The chassis structure includes a first frame structure (P.sub.1, 14) carrying a first pair of support wheels (N.sub.1) and the pair of drive wheels (L.sub.1), and a second frame structure (O.sub.1, 10) carrying the second pair of support wheels (M.sub.1) and vertically pivotably connected to the first frame structure (at K). The wheeled chassis is primarily intended for use as a wheelchair (2,4,6).
Claims12
A maneuverable, motor-driven wheeled chasis, including a chassis structure carrying pairs of freely mounted support wheels separated in the longitudinal direction of the chassis, and a pair of drive wheels arranged between said support wheel pairs, characterized in that said chassis structure includes a first frame structure carrying a first pair of said support wheels and said pair of drive wheels, and a second frame structure pivotably connected to said first frame structure for movement in the vertical direction and carrying a second pair of said support wheels;
- said first frame structure including two parallel independently movably connected longitudinal members and said second frame structure similarly including two parallel independently movably connected longitudinal members connected at their ends to said first frame structure such that they are individually pivotable relative to it.
Dependencies are inferred from the claim text.