Land vehicles – Wheeled – Occupant propelled type
Patent
1995-08-25
2000-08-29
Johnson, Brian L.
Land vehicles
Wheeled
Occupant propelled type
280275, 384229, 384912, B62K 2528
Patent
active
061096369
ABSTRACT:
A bicycle frame suspension comprises a single main tube having fore and aft ends and left and right sides with a head tube for rotatably mounting the front steering forks and front wheel secured to said fore end and a seat retention tube for mounting the seat secured to the aft end and bearings attached to either side of the main tube. A rigid rear triangle assembly has a bottom bracket for rotatably mounting the pedal and crank assembly. Left and right chain stay tubes have forward and trailing ends. A wheel fixing dropout is secured to each trailing end, respectively. The forward ends are secured to the bottom bracket. Left and right seat stay tubes have trailing ends secured in the proximity of the trailing ends of the chain stay tube and the dropouts, respectively. Pivot struts have upper and lower ends with the lower ends being secured to the bottom bracket, the upper ends being provided with bearing fittings and spaced apart a distance D and joined to forward ends of the seat stay tubes. A suspension spring assembly has one end connected to the bottom bracket and the other end connected to said main tube and proximate the aft end of the single main tube.
REFERENCES:
patent: 392523 (1888-11-01), Owen
patent: 2756071 (1956-07-01), Riva
patent: 4085832 (1978-04-01), Gaines et al.
patent: 4575429 (1986-03-01), Jacobson
patent: 5284354 (1994-02-01), McWethy
patent: 5367918 (1994-11-01), Chang et al.
patent: 5403028 (1995-04-01), Trimble
patent: 5474318 (1995-12-01), Castellano
Klein Gary G.
Voss Darrell W.
Johnson Brian L.
Klein Bicycle Corporation
Lerner Avraham H.
Zegeer Jim
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