Stair climbing wheelchair

Details Stair climbing wheelchair Stair climbing wheelchair

1994-12-20

1996-11-26

Hurley, Kevin T.

Motor vehicles

Special driving device

Portable track

180907, 280 522, 280 61, 280DIG10, B62D 55075

Patent

active

055775675

ABSTRACT:
In order to provide safe and effective surface climbing and descending vehicles, the vehicle includes a base for supporting a platform to be maintained in a generally horizontal orientation. The mechanism automatically raises and lowers the platform as the vehicle is descending or climbing the surface, respectively, in order to maintain the platform in the generally horizontal orientation. With this arrangement, the vehicle further includes a pair of endless belts normally to be maintained in driving engagement with the surface in a manner to conform to the surface during climbing and descending.

REFERENCES:
patent: 3231036 (1966-01-01), Appendrodt
patent: 3288234 (1966-11-01), Feliz
patent: 3869011 (1975-03-01), Jensen
patent: 4483407 (1984-11-01), Iwamoto et al.
patent: 4566551 (1986-01-01), Feliz
patent: 4687068 (1987-08-01), Pagett
patent: 4688813 (1987-08-01), Misawa et al.
patent: 4763742 (1988-08-01), Langford
patent: 4977971 (1990-12-01), Crane,III et al.
patent: 5123495 (1992-06-01), Littlejohn et al.
patent: 5395129 (1995-03-01), Kao

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