Compact seat suspension for lift truck
First Claim
1. In a lift truck vehicle having a mast assembly, a carriage for lifting loads, and an operator'"'"'s station, a seat assembly comprising;
- a seat, a base component mounted on a seat supporting surface, a pair of spaced apart upright components affixed to and extending normally from said base component, lower seat components, at least one pair of parallel disposed link components connected between said lower seat components and said upright components, said link components being located outboard of said seat so as to allow said seat to move in close proximity to said seat supporting surface, shaft means extending between and connected to said pair of upright components, and spring means connected to said shaft means to apply force to one of said at least one pair of link components for urging said lower seat components away from said base component.
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Accused Products
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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Citations
13 Claims
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1. In a lift truck vehicle having a mast assembly, a carriage for lifting loads, and an operator'"'"'s station, a seat assembly comprising;
- a seat, a base component mounted on a seat supporting surface, a pair of spaced apart upright components affixed to and extending normally from said base component, lower seat components, at least one pair of parallel disposed link components connected between said lower seat components and said upright components, said link components being located outboard of said seat so as to allow said seat to move in close proximity to said seat supporting surface, shaft means extending between and connected to said pair of upright components, and spring means connected to said shaft means to apply force to one of said at least one pair of link components for urging said lower seat components away from said base component.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification