Stair-climbing wheelchair carrier
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 28, 1986
Grant Date -
N/A
app pub date -
May 3, 1984
filing date -
Oct 7, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stair-climbing wheelchair carrier has a frame body, a pair of rail frames formed in a lower portion of the frame body and a pair of endless belt crawlers engaged with the wheels provided on the frame body and with the rail frames. A travelling wheel mechanism is provided on each of the rail frames at a rear portion thereof. The travelling wheel mechanism comprises a lever rotatably mounted on the rail frame, a pair of travelling wheels provided on both ends of the lever, and a spring for maintaining said travelling wheels in a position parallel with the grounding surface of the crawlers. Both the travelling wheels are so disposed that contact points with the ground are at lower positions than the grounding surface of the crawlers.
First Claim
Family
International Classification(s)
Cited Art Landscape
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