Land vehicles – Wheeled – Occupant propelled type
Patent
1991-09-20
1993-07-13
Hill, Mitchell J.
Land vehicles
Wheeled
Occupant propelled type
267171, 280283, 280285, 280288, B62K 2504
Patent
active
052266745
ABSTRACT:
A rear suspension system for a two wheel cycle such as a bicycle or motorcycle having a main frame which includes a rearwardly or downwardly inclined down tube. A vertically pivotable rear frame assembly includes a pair of swing arms which extend rearwardly from pivotal connections on the main frame. Rear wheel fitments are carried by the swing arms. A pair of elongated tubelike or rodlike chain stays extend forwardly from the rear fitments at a fixed angle relative to the swing arms. A tubular shock absorber assembly is supported on the down tube and has a spring urging a coupler portion thereof in a forward and upward direction. A double-pivoted link is pivotally connected between the forward ends of the chain stays and a bell crank assembly which is pivotally connected to the underside of the frame, and in turn, connects the double-pivoted link to the coupler portion of the shock absorber assembly. Upward impacts on the rear wheel are reacted on the main frame as a downward and rearward force with a largely downward force component so pitching motion at the rear end of the main frame is minimized when moving over ground or highway irregularities or rough terrain encountered in off road riding. In one embodiment, the shock absorber assembly is supported on the forward side of the down tube; in another embodiment, the shock absorber assembly is inside an open-rear-ended down tube.
REFERENCES:
patent: 1130828 (1915-03-01), Kuehn
patent: 1412012 (1922-04-01), Bruno
patent: 2132317 (1938-10-01), Pease
patent: 2283671 (1942-05-01), Finlay et al.
patent: 2446731 (1948-08-01), Wheler
patent: 3942821 (1976-03-01), Bock
patent: 3948543 (1976-04-01), MacDonald et al.
patent: 4039200 (1977-08-01), McGonegle
patent: 4046396 (1977-09-01), Taylor et al.
patent: 4058181 (1977-11-01), Buell
patent: 4186936 (1980-02-01), Offenstadt et al.
patent: 4421337 (1983-12-01), Pratt
patent: 4433850 (1984-02-01), Miyakoshi et al.
patent: 4568101 (1986-02-01), Bleustein et al.
patent: 4679811 (1987-07-01), Shuler
patent: 4732404 (1988-03-01), Coetzee
patent: 4789174 (1988-12-01), Lawwill
patent: 4792150 (1988-12-01), Groendal et al.
patent: 4815763 (1989-03-01), Hartmann
patent: 4997197 (1991-03-01), Shultz
patent: 5000470 (1991-03-01), Kamler et al.
patent: 5014808 (1991-05-01), Savard et al.
Buell Erik F.
Muller Marc
Hill Mitchell J.
Schwinn Bicycle Company
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