Folding bicycle

Details Folding bicycle Folding bicycle

2006-04-18

2009-02-17

Dickson, Paul N (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C280S287000, C280S639000, C280S040000

Reexamination Certificate

active

07490842

ABSTRACT:
This invention relates to personal transportation devices and more specifically to folding bicycles. The invention consists of a folding frame comprised of a main tube with tuned cross section, a folding pivot axis perpendicular to the vehicle axis, and a locking mechanism further comprising a seat post rigidly retained by two clamping sections of a seat tube. The invention also consists of a rear wheel retention element—a “dropout”—with horizontal axle slots and a replaceable derailleur hanger.

REFERENCES:
patent: 4582335 (1986-04-01), Paioli et al.
patent: 5052706 (1991-10-01), Tsai et al.
patent: 2004/0007851 (2004-01-01), Chao
patent: 2005/0062256 (2005-03-01), Chen
patent: 2005/0161898 (2005-07-01), Chao
patent: 2007/0024023 (2007-02-01), Hsu
patent: 2007/0029753 (2007-02-01), Ritchey
patent: 2007/0057482 (2007-03-01), Hsu

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