Foldable tandem bicycle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 26, 1991
Grant Date -
N/A
app pub date -
Jan 13, 1989
filing date -
Jan 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A foldable tandem bicycle employs three separate frames joined at concentric seat tubes. The frames have quick release clamps to lock the frames into an open rigid orientation. The center frame has several configurations, male one having a closed complete frame with one diagonal brace and a female one with a pair of diagonal braces to eliminate the need for a top tube.
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Family
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Cited Art Landscape
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