Fastening assembly of bicycle upright tube

Details Fastening assembly of bicycle upright tube Fastening assembly of bicycle upright tube

1996-07-25

1998-04-14

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Elements

280279, 403370, 403374, B62K 2118

Patent

active

057379742

ABSTRACT:
A bicycle upright tube fastening assembly comprises a handlebar upright tube, a bolt, a tightening head,. an arresting tube, a torsion spring, a nut, a head tube, a from fork tube column, and a bearing set which is composed of a mounting seat, a ball bowl, a rolling ball slot seat and a ball nest. The mounting seat is provided therein with an upper tapered portion and a lower tapered portion. An upper fitting ring is received in the upper tapered portion while a lower fitting ring is received in the lower tapered portion. The ball bowl is provided with a straight center hole having at one end thereof a tapered protuberance which is engaged with the lower tapered portion of the mounting seat such that one end of the tapered protuberance urges the lower fitting ring of the mounting seat. The rolling ball slot seat is urged by the head tube when a pressure exerting on the mounting seat is transmitted to the ball bowl and the ball nest which is located between the ball bowl and the rolling ball slot seat.

REFERENCES:
patent: 5201242 (1993-04-01), Chi
patent: 5387255 (1995-02-01), Chiang

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