Bicycle headset construction
AssigneeCane Creek Cycling Components, Inc.
InventorRobert Wayne Tison
Life of this patent
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Abstract
A bicycle headset of the type having upper and lower bearing assemblies for facilitating relative rotation between a steerer tube of a bicycle front fork and a head tube of a bicycle frame, each of the bearing assemblies having a bearing cup with cup-shaped portion for holding an annular rotary bearing unit and an axially extending insertion portion for insertion into the head tube, is improved by a stress-relieving undercut being formed as a transition between the cup-shaped portion and the insertion portion. The undercut can extend around the outer periphery of the insertion portion, the underside of the cup-shaped portion or the junction of the flange and cup-shaped portions.
Claims20
In a bicycle headset of the type having upper and lower annular rotary bearing assemblies for facilitating relative rotation between a steerer tube of a bicycle front fork and a head tube of a bicycle frame, each of the bearing assemblies having a bearing cup in which bearing elements are located, wherein said bearing cup has an axially extending insertion portion for insertion into the head tube and a radially extending portion for engaging on an end of a bicycle head tube in an installed state of the headset, the improvement comprising an undercut forming a transition between said radially extending portion and said insertion portion, said undercut being an annular recess extending around the bearing cup.
In a bicycle of the type having a front wheel fork with a steerer tube, a frame with a head tube, and upper and lower annular rotary bearing assemblies for facilitating relative rotation between the steerer tube of the front fork and the head tube of the frame, each of the bearing assemblies having bearing elements and a bearing cup in which the bearing elements are located, wherein said bearing cup has an axially extending insertion portion inserted into the head tube and a radially extending portion engaging on an end of the bicycle head tube, the improvement comprising an undercut forming a transition between said radially extending portion and said insertion portion, said undercut being an annular recess extending around the bearing cup.
Dependencies are inferred from the claim text.