Cantilevered motorcycle frame
OwnerScott Plourdeinventor
Life of this patent
Estimating the term…
Abstract
A motorcycle frame assembly having a cantilevered, open loop motorcycle frame assembly that achieves a desirable balance between frame strength and rigidity in a lateral and a vertical direction without the necessity of a conventional down tube. The frame assembly utilizes a top tube supported by a top tube support aligned parallel and concentric with at least a portion of the top tube from a connection point with the head tube. The top tube and support being the sole support for the head tube so that a down tube is not necessary.
Claims20
A motorcycle frame comprising:
- a head tube for pivotally supporting a front wheel, fork and steering assembly;
- a contiguous top tube having a forward portion extending rearward from the head tube to a rearward portion of the top tube which curves downwardly and rearwardly to define a seat position for a rider;
- and
- a support member connected to the head tube and the forward portion of the top tube;
- and
- wherein the support member is connected in a parallel and concentric relationship with at least the forward portion of the top tube.
A motorcycle frame comprising:
- a head tube;
- a top tube;
- a top tube support arranged parallel with the top tube;
- a lower frame section;
- and
- wherein the sole support of the head tube is provided by the top tube and top tube support.
A method of making a motorcycle frame comprising the steps of:
- connecting a head tube to a top tube;
- arranging a top tube support in parallel and concentric connection with the top tube;
- connecting the top tube and top tube support to a lower frame section;
- and
- solely supporting the head tube solely by at least one of the top tube and top tube support.
Dependencies are inferred from the claim text.