Land vehicles – Wheeled – Occupant propelled type
Patent
1993-08-17
1995-04-25
Hill, Mitchell J.
Land vehicles
Wheeled
Occupant propelled type
297DIG4, 403172, A61G 500, B62M 114
Patent
active
054092477
ABSTRACT:
A wheelchair frame is defined by a pair of side frame assemblies that are rigidly connected to each other by a seat pan. Each side frame assembly includes a seat mounting member on which the seat pan is mounted, a bottom member connected to the seat mounting member, and a footrest member pivotally connected to the seat mounting member and rigidly connected to the bottom member. A drive wheel mounting assembly can include a generally U-shaped mounting block for being mounted on a bottom member of each side frame assembly, and a drive axle receiving arrangement mounted on each mounting block for receiving a drive wheel axle. The bottom member can be provided with a flat surface upon which the drive axle receiving arrangement is placed. A caster wheel mounting assembly mounted on each bottom member can include a caster wheel mount having two spaced apart forks for receiving a caster wheel, a stem connected to the caster wheel mount, a caster sleeve in which the stem is positioned, and a bearing disposed between the caster sleeve and the stem for allowing rotational movement of the caster sleeve relative to the stem and the caster wheel mount. To adjust the seat pan angle, the rear end of each bottom member can be curved upwardly and provided with a plurality of holes arranged along an arc having a center of curvature that corresponds to the pivot connection between the seat mounting member and the footrest member.
REFERENCES:
patent: D254970 (1980-05-01), Honzyou
patent: 3379450 (1968-04-01), Jones et al.
patent: 4405142 (1983-09-01), Whetstine
patent: 4650201 (1987-03-01), Hartwell
patent: 4652005 (1987-03-01), Hartwell
patent: 4721321 (1988-01-01), Hanry et al.
patent: 4730842 (1988-03-01), Summers et al.
patent: 4966379 (1990-10-01), Mulholland
patent: 5020816 (1991-06-01), Mulholland
patent: 5060962 (1991-10-01), McWethy
patent: 5152543 (1992-10-01), Sims et al.
Geiger Richard
Robertson A. Scott
LandOfFree
Wheelchair frame does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wheelchair frame, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wheelchair frame will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1563425