Chairs and seats – Movable bottom – Interconnected with back for relative concurrent movement
Patent
1976-07-09
1977-09-13
Foss, J. Franklin
Chairs and seats
Movable bottom
Interconnected with back for relative concurrent movement
248399, A47C 322, A47C 330
Patent
active
040477592
ABSTRACT:
A seat suspension system for lift trucks and other vehicles having a low or compact profile is provided. A seat framework is adjustably slidably mounted upon supporting structure of the vehicle within the operator's compartment. The framework includes a U-shaped base component, a pair of upright support components, box-like lower seat components, and back rest components. The lower seat components are suspended from the upright components by opposed pairs of parallel links and the links are biased upwardly by a pair of torsion springs disposed between the upright components. The lower seat components and back rest components are provided with planar sinusoidal springs and a damping device controls the up-and-down motion of the seat framework relative to the vehicle support structure.
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patent: 3797798 (1974-03-01), Magruder
Foss J. Franklin
Towmotor Corporation
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