Spoke-nipple and a method for its manufacture
AssigneeAlpina Raggi S.p.A.
InventorGuido Cappellotto
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Abstract
A spoke nipple comprises a body of substantially undeformable material with a head and a shank which have an at least partially threaded axial hole for housing the thread of a spoke, and with a perforated insert of substantially deformable material fixed to the body with the holes in the body and in the insert arranged coaxially, the insert having an inside diameter such as to house the thread of the spoke with interference when it is screwed into the axial hole in the nipple body.
Claims1
A method of manufacturing a spoke nipple comprising a body of substantially undeformable material with a head and a shank which has a partially threaded axial hole for housing a threaded spoke comprising the steps of:
- providing an insert of substantially deformable plastics material,
- providing a seat formed at a free end of the head for housing said insert,
- fixing said insert to the body in said seat and providing a hole in the insert, the holes in the insert and in the body being arranged coaxially with the hole in the insert having an inside diameter such as to house the threaded spoke with interference when it is screwed into the hole in the body, and
- wherein the holes in the body and in the insert are formed simultaneously while the insert is restrained in the seat in the body.
Dependencies are inferred from the claim text.