Foldable tandem bicycle

Details Foldable tandem bicycle Foldable tandem bicycle

1989-01-13

1991-02-26

Mitchell, David M.

Land vehicles

Wheeled

Occupant propelled type

280278, 280287, B62K 312, B62K 1500

Patent

active

049956264

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.

REFERENCES:
patent: 625612 (1899-05-01), Steinberg
patent: 3680879 (1972-08-01), Cogliano
patent: 4448437 (1984-05-01), Montague

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