Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1985-06-06
1987-07-28
Smith, Gary L.
Machine element or mechanism
Control lever and linkage systems
Elements
745515, 403 97, B62K 2116
Patent
active
046825096
ABSTRACT:
An adjustable handlebar for a bicycle according to the invention comprises two handlebar members whose adjacent ends are pivotally supported by two bolts whose extended axes are crossing in front of the bicycle, gear teeth formed in the adjacent ends of the handlebar members so as to pivotally move one handlebar member by pivotally moving the other handlebar member, two sets of isosceles triangle-shaped thrust serrations at adjacent ends of the handlebar members and an upper portion of a handlebar stem, thereby anchoring the handlebar members when the bolts are tightened and moving the adjacent ends of the handlebar members away from the upper portion of the handlebar stem when the bolts are loosened and the handlebar members are rotated, and a cam and cam follower assembly having a lever for engaging and disengaging the serrations, thereby simply changing positions of handlebar members symmetrically. The upper portion of the handlebar stem is formed by a rear part and a front part pivotally movable relative to the rear part in a substantially vertical direction about a substantially horizontal axis in transverse direction of the bicycle and clamped to the rear part by the clamping means, thereby enabling inclined angles of grips of the handlebar to be changed.
REFERENCES:
patent: 555150 (1896-02-01), Dieterich et al.
patent: 583105 (1897-05-01), Wheeler
patent: 586162 (1897-07-01), Cobb
patent: 588242 (1897-08-01), Rexroth
patent: 593367 (1897-11-01), Wheeler
patent: 635689 (1899-10-01), King et al.
patent: 677373 (1901-07-01), Rauhoff
patent: 677428 (1901-07-01), Spencer
patent: 698137 (1902-04-01), Porter
patent: 774421 (1904-11-01), Griswold
patent: 781128 (1905-01-01), Calkins
patent: 943573 (1909-12-01), Simon
patent: 1934910 (1932-12-01), Buhr
patent: 3848784 (1974-11-01), Shimano et al.
patent: 4111447 (1978-09-01), Ishida
Ishibashi Hideyuki
Takamiya Kikuzo
Bridgestone Cycle Co. Ltd.
Lindsey Rodney M.
Smith Gary L.
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