Wheelchair
OwnerRonald H. Williamsinventor
Life of this patent
Estimating the term…
Abstract
The vehicle has a pair of spaced apart side frames disposed and spaced apart in parallel relationship. Each of the side frames is provided with a caster wheel and a drive wheel. A seat base assembly is provided above the frame assemblies and is movably interconnected on each side with one of the frame assemblies. A seat back assembly, having an upper end and a lower end, is pivotally and adjustably interconnected at its lower end to each of the side frames. In a preferred embodiment, the transport vehicle is collapsible for storage and has a removable seat base insert, adjustable and removable leg rests and arm rests, a head restraint, a torso restraint, a sun visor, and a removable enclosure for inclement weather.
Claims35
A transport vehicle for transporting an occupant, said transport vehicle comprising:
- a pair of spaced apart side frame assemblies disposed in a spaced apart parallel relationship, each of said pair of side frame assemblies having a front wheel mounting means and a rear wheel mounting means, said rear wheel mounting means comprising:
- a wheel mounting member movably interconnected with a respective side frame assembly of said pair of side frame assemblies;
- and
- wheel adjustment means operably disposed between said wheel mounting member and said respective side frame assembly, said wheel adjustment means selectively operable to move said wheel mounting member horizontally relative to said respective side frame assembly;
- a pair of caster wheels, each of said pair of caster wheels connected with one of said front wheel mounting means;
- a pair of drive wheels, each of said drive wheels having a hub member, a wheel member, a means for slidably connecting said wheel member to said hub member, said hub member fixedly secured to said wheel mounting member of said wheel mounting means of said pair of side frame assemblies, said means for slidably connecting said wheel member interposed said wheel member and said hub member such that said wheel member may rotate relative to said hub member;
- a seat base assembly interposed each of said pair of said side frame assemblies;
- fastening means for interconnecting said seat base assembly with said pair of side frame assemblies;
- and
- a seat back assembly having an upper end and a lower end, said seat back assembly being interconnected at said lower end of said seat back assembly to each of said pair of side frame assemblies.
In a wheeled transport vehicle intended for transporting a human occupant and provided with a seat base and a seat back, operably interconnected with two rear drive wheels and two front casters, the improvement comprising:
- two side frames, each being interconnected with said seat base;
- two wheel mounting members, each movably interconnected with one of said two side frames;
- wheel adjustment means for each of said two wheel mounting member operably disposed between each of said two side frames and an associated wheel mounting member of said two wheel mounting members;
- and
- drive means selectively operable to activate said wheel adjustment means for moving said two side frames and said seat base forward or backwards on a horizontal plane, said two side frames and said seat base moving relative to said two rear drive wheels;
- each of said two rear drive wheels mounted to one of said two wheel mounting members.
Dependencies are inferred from the claim text.