Foldable tandem bicycle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 4, 1992
Issued Date -
N/A
app pub date -
Jan 15, 1991
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, unisex one having a closed complete frame with one diagonal brace and a second one with a pair of diagonal braces to eliminate the need for a top tube. A third embodiment employs in-line intermediate members.
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Family
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Cited Art Landscape
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