Step climbing wheelchair

Details Step climbing wheelchair Step climbing wheelchair

2007-03-09

2009-06-02

Dickson, Paul N (Department: 3611)

Land vehicles

Step or abutment ascending type vehicle

C280S005300, C280S005320

Reexamination Certificate

active

07540504

ABSTRACT:
A step climbing wheelchair apparatus includes right and left lift anus, and a longitudinal slot defined in a middle portion of each lift arm. The rear wheel axles of the wheelchair extend through the slot and a fastener is attached to secure each lift aim on the corresponding axle such that each lift arm can slide longitudinally perpendicular to the axle. The lift anus are configured such that when in an extended position rear step ends of the lift arms are located rearward of the outer rim of the rear wheel, and the front ends are located generally forward of the outer rim of the rear wheel. A front lift mechanism provides a lift lever operative to push a lift wheel downward to raise the front caster wheels of the wheelchair.

REFERENCES:
patent: 3573877 (1971-04-01), Locke
patent: 3976152 (1976-08-01), Bell
patent: 4119163 (1978-10-01), Ball
patent: 4222449 (1980-09-01), Feliz
patent: 4455029 (1984-06-01), Taylor
patent: 5228709 (1993-07-01), Kao
patent: 6554086 (2003-04-01), Goertzen et al.

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