Modular butt-jointed yoke for motorcycles
OwnerRoger David Scott Goldammer, Scott Ronald Johnsoninventors
Life of this patent
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Abstract
A front fork yoke for a motorcycle where the yoke includes a parallel pair of posts rigidly maintained laterally spaced apart by a pair of parallel semi-circular arches extending laterally between the posts. The imposts of the upper arch are curved rounded-over shoulders. The front face of the yoke is smoothly rounded-over towards the rear face of the yoke. The arches are upwardly convex and support the motorcycle head tube therebetween. The lower arch is butt-jointed to the fork uprights without the use of collars external to the uprights.
Claims12
A front fork yoke for a motorcycle comprising:
- a parallel pair of posts, each post of said pair of posts being hollow andhaving an upper end and an opposite lower end, an upper arch extending from and between each said upper end of said each post, each said upper end being an impost at opposite ends of said upper arch,
- a lower arch paralleling said upper arch and mounted to, so as to extend between, said pair of posts adjacent said lower ends of said pair of posts, said upper and lower arches each having a vertice lying generally on an axis of rotation of said yoke when said yoke is mounted to a motorcycle frame so that a head tube of the frame coaxial with said axis of rotation is mountable snugly between said vertices of said upper and lower arches, said upper and lower arches each forming a corresponding concavity under each said arch which opens downwardly towards said lower ends of said pair of posts,
- wherein said upper arch is one unitary rigid piece and wherein said lower arch is butt-joint mounted to said pair of posts without the use of external collars around said pair of posts.
The apparatus of claim 8 wherein said oppositely disposed ends have bores therein extending from apertures in said curved end surfaces, for bolting of said lower arch to said pair of posts by bolts extending through said bores and said apertures.
The apparatus of claim 9 wherein said each post in said pair of posts has an aperture in each said mating surface in alignment with said apertures in said curved end surfaces when said lower arch is mounted on said pair of posts, and wherein a collar is mounted co-axially within each said post and adapted for threadably engaging said bolts so as to rigidly sandwich said mating surfaces of said pair of posts between said curved ends of said lower arch and said collars mounted co-axially within each said post.
Dependencies are inferred from the claim text.