All-terrain bicycle frame

Details All-terrain bicycle frame All-terrain bicycle frame

1991-08-06

1996-07-09

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

2802883, B62K 302, B62K 1916

Patent

active

055337422

ABSTRACT:
An injection molded, single-piece plastic bicycle frame which includes a generally upright stem, and a cantilever structure joined to and extending from opposite sides of the stem in a gently curving, downwardly facing reverse bend. The material forming the frame has a nonuniform internal structural density which is characterized by higher density adjacent the surface, and by decreasing density progressing toward the core. This material preferably takes the form of a foamed structural plastic material.

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