Patent ID: 7017929
Filing Date: 2006-03-28
Classification: B62J,B62K,Y10T

Abstract:
1. An expandable bicycle headset structure comprising: a first tubular member having a first free end, a first coupling end with a first mating adjustment structure, and a first bore extending axially between the first free end and the first coupling end, the first bore having an innermost diameter that is sized to receive a steerer tube therethrough; a second tubular member having a second free end, a second coupling end with a second mating adjustment structure, and a second bore extending axially between the second free end and the second coupling end, the second bore having an innermost diameter that is sized to receive the steerer tube therethrough, the first and second mating adjustment structures being adjustably coupled together to change an effective overall axial length of the expandable bicycle headset, structure; and a locking member configured and arranged to be selectively set to prevent relative adjustment between the first and second mating adjustment structures when the first and second tubular members are located in a plurality of different axial positions relative to each other such that the bicycle headset structure is operable with the first and second tubular members located in the plurality of different axial positions, the first and second tubular members being mounted between an upper steering bearing set and a mounting portion with the first and second tubular members being adjustably exposed when adjustably coupled such that an overall effective length of the first and second tubular members can be changed in an assembled state, the first mating adjustment structure including a set of first threads, and the second mating adjustment structure including a set of second threads that are threadedly engaged with the first threads to prevent axial separation of the first and second mating adjustment structures when the first and second threads are threadedly engaged, the locking member being constructed as a separate member from the first and second tubular members that is threadedly coupled to one of the first and second threads such that rotation of the locking member relative to the one of said first and second threads is used in order for the locking member to be selectively set.