Abstract A suspension system for a motorcycle's rear wheel of the type in which that rear wheel is rotationally carried between two swing arms at one end of the swing arms, the moving arms being positioned on opposite sides of the rear wheel and being immobile relative to one another. The other end of the swing arms is pivotally mounted on a common axis to the motorcycle's main frame. Thus, the motorcycle's rear wheel is suspended from the main frame by the swing arms and the shock absorber. The unique feature of this invention is that the common pivot axis of the swing arms is located so as to pass through the tangent point of the tension run of the rear wheel's drive chain with that chain's power transfer sprocket when that chain is viewed from a line of sight perpendicular to the plane of that chain.
A rear wheel suspension system for a motorcycle, said suspension system comprising at least one swing arm rotatably mounting said motorcycle's rear wheel at one end, said swing arm being pivotally connected to said motorcycle's main frame at the other end, a power transfer sprocket mounted to said motorcycle's main frame and a rear wheel drive sprocket mounted to said rear wheel, and a rear wheel drive chain drivingly connecting said two sprockets, the pivot axis of said swing arm being located in the tension run of said rear wheel drive chain when said drive chain is viewed from a line of sight normal to the plane of said rear wheel drive chain.
Claim 2
Dependent Claim
113 words
A rear wheel suspension system for a motorcycle, said suspension system comprising at least one swing arm rotatably mounting said motorcycle's rear wheel at one end, said swing arm being pivotally connected to said motorcycle's main frame at the other end, a power transfer sprocket mounted to said motorcycle's main frame and a rear wheel drive sprocket mounted to said rear wheel, and a rear wheel drive chain drivingly connecting said two sprockets, the pivot axis of said swing arm being located in the tension run of said rear wheel drive chain when said drive chain is viewed from a line of sight normal to the plane of said rear wheel drive chain.
Claim 3
Dependent Claim
39 words
A rear wheel suspension system as set forth in claim 1 including at least one shock absorber connected to said swing arm adjacent the rear wheel end thereof and connected to said motorcycle's main frame at the other end.
Claim 4
Dependent Claim
38 words
A rear wheel suspension system as set forth in claim 2 wherein said swing arms' pivot axis is closely adjacent to or coincident with the tangent point of said drive chain's tension run with said power transfer sprocket.
Claim 5
Dependent Claim
47 words
A rear wheel suspension system as set forth in claim 2 including a motor drive sprocket mounted to said main frame, said motor drive sprocket being directly connected to said motorcycle's motor, and a motor drive chain connecting said motor drive sprocket with said power transfer sprocket.
Claim 6
Dependent Claim
35 words
A rear wheel suspension system as set forth in claim 2 including two swing arms, said swing arms being positioned on opposite sides of said rear wheel and being immobile relative one to the other.