Frame for various cycles

Land vehicles – Wheeled – Occupant propelled type

Patent

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Details

2801521, 280274, B62L 304

Patent

active

040158543

ABSTRACT:
A unitary molded or cast bicycle frame formed by a plurality of elements of open cross-section and integral with each other to form a unitary structure, such elements including a top crossbar, a steering tube at one end, the front end, of the crossbar, a transverse crank gear case below and spaced downwardly from the top crossbar, a bottom member extending from the steering tube to the crank gear case, a two-armed, wheel receiving fork extending rearwardly from the crank gear case and having wheel spindle receiving openings at the rearward ends of the arms, a pair of struts extending from the arms of said fork adjacent said openings to the opposite, rear end of the top crossbar and a strut member extending from said struts at portions thereof intermediate said top crossbar and said openings to the arms of said fork adjacent said crank gear case. A saddle or seat tube or opening is provided at or adjacent the juncture of the struts and the top crossbar.

REFERENCES:
patent: 603006 (1898-04-01), Demarest
patent: 2330560 (1943-09-01), Descos
patent: 2370726 (1945-03-01), Hess
patent: 2378961 (1945-06-01), Wallace
patent: 2493037 (1950-01-01), Simon
patent: 3508765 (1970-04-01), Bauer
patent: 3833242 (1974-09-01), Thompson
patent: D23395 (1894-06-01), Stark

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