Bicycle and frame therefor

Details Bicycle and frame therefor Bicycle and frame therefor

1989-07-05

1990-05-01

Hill, Mitchell J.

Land vehicles

Wheeled

Occupant propelled type

B62K 1902, B62K 1912

Patent

active

049212672

ABSTRACT:
A light weight bicycle frame has open section, e.g. I section, parts cast in a light weight metal or alloy, preferably a magnesium alloy. A frame consists of an upper bar, and a lower bar, a saddle stem, a head, and rear forks. The bars are of I section and the saddle stem is of U section merging into or taking a tubular section receiving a saddle support tube. A structural bridge of I section interconnects the bars. The lower bar joins the saddle stem at a point intermediate the ends thereof and above the bearing for a crank wheel.

REFERENCES:
patent: 2470441 (1949-05-01), Maier et al.
patent: 2855219 (1958-10-01), Douglas
patent: 3833242 (1974-09-01), Thompson
patent: 3866946 (1975-02-01), Robison
patent: 4015854 (1977-04-01), Ramond
patent: 4368897 (1983-01-01), Brown
patent: 4500103 (1985-02-01), Klein
patent: 4746136 (1988-05-01), Kirk

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