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US 4,274,301 AGranted
Handle stem fixing device for a bicycle and the like
AssigneeShimano Industrial Company Limited
InventorHitoshi Katayama
Life of this patent
Estimating the term…
Abstract
A handle stem fixing device for a bicycle is described in which a rotary control is provided at the head of a bolt, the head being larger in diameter than the bolt stud or alternatively having a flange, and a socket is provided at a hollow handle stem, into which the head is lodged and a retainer is provided, whereby the retainer substantially blocks the bolt's axial movement and the bolt is screwed to which is forced to be axially movable.
Claims7
A fixing device for fixing a hollow handle stem to a front fork of a bicycle comprising:
- a bolt having a screw thread and being inserted through said handle stem;
- a cone screwed with said thread;
- and
- retaining means for retaining said bolt to said handle stem in relation of being substantially axially fixed;
- said bolt having a head with a rotary control adapted to permit rotating of the bolt, said head including a larger diameter portion than the stud of said bolt, said retaining means comprising at least one retainer being engaged with said larger diameter portion of the bolt permitting relative rotation of said bolt with respect to said retainer and connected with said handle stem so as to substantially fix said bolt axially with respect to said handle stem, whereby when said bolt is turned said retainer remains stationary and restricts axial movement of said bolt and said cone is axially moved from said handle stem by use of the thrust of the screw thread of said cone, whereby said handle stem is made detachable from the front fork.
2 more elements
Dependencies are inferred from the claim text.