Motorcycle suspension systems

Details Motorcycle suspension systems Motorcycle suspension systems

1976-03-16

1977-11-15

Peters, Jr., Joseph F.

Motor vehicles

Steam traction engines

280284, B62K 2502

Patent

active

040581810

ABSTRACT:
An improvement in motorcycle frames having a generally closed configuration with generally horizontal upper and lower frame members and spaced generally front and rear vertical members transverse to and connecting said upper and lower members to form a closed configuration and a power unit in said frame having a drive sprocket is provided in the form of a pair of spaced generally horizontally extending swing arms on each side of said frame and a rear wheel, said arms extending rearwardly from the rear member and each pivoted adjacent one end on said frame, a generally vertical link connecting the other ends of said swing arms and receiving an axle shaft for the rear wheel intermediate the two swing arms, spring means pivotally connected at one end to at least one swing arm of each pair of swing arms at the other end to at least one of the other swing arms and the frame and link means in one of said pivot connections of said spring means whereby deflection of said swing arms from a first normal position upwardly around their pivot at the frame causes a progressively rising rate of deflection of said spring means.

REFERENCES:
patent: 3917313 (1975-11-01), Smith et al.
patent: 3974892 (1976-08-01), Bolger

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