DR. STEVEN ROBERT SCHMID, D.D.S.
Dentist at Ellsworth Rd, Ypsilanti, MI
License number
Michigan 2901021422
Category
Dentist
Type
General Practice
Address
Address
2
2429 Ellsworth Rd, Ypsilanti, MI 48197
350 Floor, Chicago, IL 60654
350 Floor, Chicago, IL 60654
Phone
(734) 434-0043
(321) 544-7078
(321) 544-7078
Professional information
Minimum Energy Curb Negotiating Wheelchair
US Patent:
4962942, Oct 16, 1990
Filed:
May 22, 1989
Appl. No.:
7/354804
Inventors:
Ralph L. Barnett - Wilmette IL
Steven R. Schmid - Chicago IL
Robert Kaplan - Skokie IL
Steven R. Schmid - Chicago IL
Robert Kaplan - Skokie IL
Assignee:
Triodyne Inc. - Niles IL
International Classification:
B62B 502
US Classification:
280 528
Abstract:
A wheelchair which can negotiate curbs and other obstructions with a minimum of effort by the wheelchair occupant. The wheelchair has conventional front caster wheels and rear propulsion wheels, with first auxiliary support wheels located between the caster and rear wheels, and second auxiliary wheels being located outboard behind the rear wheels. The castered wheels and the rear wheels are structured to be raised or lowered by the wheelchair occupant. When a curb is encountered, the occupant propels the wheelchair forwardly until the first auxiliary wheels are at the edge of the curb, and the castered wheels are suspended. The castered wheels are then lowered to the bottom of the curb and the wheelchair propelled forward until the second auxiliary wheels are at the curb edge. The large rear wheels are then lowered to curb level, and the wheelchair is propelled by the occupant to the opposite curb, where the curb is ascended by turning the wheelchair 180. degree. and performing the wheel adjusting process in the opposite sequence.