Foldable tandem bicycle

Details Foldable tandem bicycle Foldable tandem bicycle

1991-01-15

1992-08-04

Mitchell, David M.

Land vehicles

Wheeled

Occupant propelled type

280278, 280287, B62K 312

Patent

active

051352460

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.

REFERENCES:
patent: 625612 (1899-05-01), Sternberg
patent: 4448437 (1984-05-01), Montague
patent: 4995626 (1991-02-01), Montague
Burley Advertisement, Burley Design Coop. Inc.

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