Tube connection assembly of bicycle frame

Details Tube connection assembly of bicycle frame Tube connection assembly of bicycle frame

2008-06-24

2008-06-24

Morris, Lesley D. (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C280S281100

Reexamination Certificate

active

07390005

ABSTRACT:
A tube connection assembly of a bicycle frame includes a bi-forked portion formed by a hollow rectangular tube; one end of the rectangular tube being bi-forked as two halves; each half having a positioning groove; and a combining portion formed by two plates which are connected as a shape corresponding to that of the positioning groove and the bi-forked portion so that in assembly the combining portion is assembled to the bi-forked portion; and connection area of the bi-forked portion and combining portion being welded.

REFERENCES:
patent: 2729466 (1956-01-01), Giordani
patent: 4585247 (1986-04-01), Takada
patent: 4699233 (1987-10-01), Koga et al.
patent: 6267399 (2001-07-01), Buckmiller et al.
patent: 6481522 (2002-11-01), Adachi
patent: 6805373 (2004-10-01), Singenberger et al.

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