Land vehicles – Wheeled – Occupant propelled type
Patent
1976-08-09
1978-07-04
Betts, Kenneth H.
Land vehicles
Wheeled
Occupant propelled type
280 80R, 280247, 297DIG4, B62M 114
Patent
active
040985210
ABSTRACT:
A wheelchair that may be used by disabled persons as a normal self-propelled vehicle and is easily convertible to a narrow attendant-propelled wheelchair for negotiating narrow passages such as airplane aisles and bathroom doors in places not equipped for the accommodation of the disabled. Wheels secondary to the main drive wheels are mounted within the limits of the frame perimeter and are not in ground contact when the main drive wheels are in use. Upon tilting the wheelchair, the secondary wheels contact the ground raising the primary wheels and enabling their rapid removal, the resulting chair being narrowed substantially to the width of the occupant. Steerable castor wheels are mounted inboard of the frame members allowing turns in tight places, and shortened or removable arms are provided for ease of lateral movement from or to the chair. Secondary footrests and drive linkage for secondary wheels are also provided.
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patent: 3917312 (1975-11-01), Rodaway
patent: 3937490 (1976-02-01), Mohamed
Ferguson Andrew Marvin
Keith Ernest Voshell
Betts Kenneth H.
National Patent Search Associates, Inc.
Reme Enterprises, Inc.
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