Adjustable bicycle handlebar stem

Details Adjustable bicycle handlebar stem Adjustable bicycle handlebar stem

1994-05-18

1995-04-11

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Elements

280279, 403351, 403367, 745511, B62K 2116

Patent

active

054047692

ABSTRACT:
An adjustable bicycle handlebar stem which is based on a C-clamp enlarged adequately to accommodate a pair of half-cylindrical upper and lower adjusting members. The adjusting members are made as a hollow structure to decrease the weight of the bicycle. The upper and lower adjusting members are interlocked through the meshing of a keyway and slot. Since both adjusting members contain two symmetric eccentric curved notches to accommodate the bicycle handlebar, the position of the handlebar can be changed using the eccentric changes of the center of the adjusting members. The fore-and-aft distance and upper-and-lower angle of the handlebar can then be adjusted.

REFERENCES:
patent: 1219382 (1917-03-01), Dunlap
patent: 3124370 (1964-03-01), Traugott
patent: 4616949 (1986-10-01), Kellner
patent: 5319995 (1994-06-01), Huang

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