Motor vehicles – Special wheel base – Having only two wheels
Patent
1996-12-06
1998-10-06
Johnson, Brian L.
Motor vehicles
Special wheel base
Having only two wheels
280275, 280284, B62K 2526
Patent
active
058163573
ABSTRACT:
An improved rear wheel suspension device for motorcycles is provided. A rectangular open-ended tracking assembly is mounted to the lower aspect of a motorcycle frame or motorcycle engine. The side walls of the tracking assembly have elongated slots. A shock absorber shaft is passed through the open end of the tracking assembly, and two elongated pull rods having bolt eyes at their opposite ends are placed against the exterior of the tracking assembly side walls. The pull rods and shock absorber shaft are movably fixed to the tracking assembly by placing a bolt through the tracking assembly slots. The opposite end of the shock absorber is mounted to a downwardly reflecting bracket fixed to the bottom of the motorcycle frame at predetermined distance from the tracking assembly. The opposite ends of both pull rods are then mounted to the downwardly reflecting vertical portion of an essentially "T"-shaped swing arm. One end of the horizontal portion of the swing arm is pivotally mounted to a motorcycle frame and the opposite end of the horizontal portion of the swing arm is rotatably fixed to the axle of the rear wheel. Vertical movement of the rear wheel causes the swing arm to pivot about its motorcycle-frame axis. This in turn causes movement of the pull rods along the length of the tracking assembly slots, thereby causing compression and relaxation of the shock absorber. The device further allows for independent ride height adjustments and spring pre-load adjustments.
REFERENCES:
patent: 2604336 (1952-07-01), Seddon et al.
patent: 4515236 (1985-05-01), Kanamori
patent: 4556119 (1985-12-01), Shiratsuchi
patent: 4596302 (1986-06-01), Suzuki et al.
patent: 4653604 (1987-03-01), De Cortanze
patent: 4724920 (1988-02-01), Tsuchida et al.
patent: 4805717 (1989-02-01), Trema
patent: 4830391 (1989-05-01), Silk
Demeur Basil E.
Johnson Brian L.
Knechtel Robert L.
Samlan Alan B.
Savitt Gary
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