Mean axis of bicycle

Details Mean axis of bicycle Mean axis of bicycle

1997-01-30

1997-11-25

Footland, Lenard A.

Bearings

Rotary bearing

Antifriction bearing

F16C 1908

Patent

active

056904320

ABSTRACT:
The present invention provides a mean axis of bicycle, which includes a five-way pipe, an internal pipe, an axle, two setting rings, two ball housings and two ball bearings. Wherein the inside walls at both ends of the internal pipe and the outside walls of the two ball housings are turned threads separately, and one ball housing has a ring shoulder at the middle position of the thread. Thereby the two ball housings fixed one ball bearing, the axle and another ball bearing in the internal pipe respectively with the outside threads to form a mean axis assembly. Then the two setting rings fix the mean axis assembly in the five-way pipe from both sides by connecting to the ball housings of the mean axis assembly in thread joint, and to the five-way pipe in bell and spigot joint. When turning the setting rings in or out from both sides of the five-way pipe, the axle in the mean axis assembly can be moved from the right to left or from the left to right along the axis to make the master chain wheel set keep in an allowable range with the rare sprocket set.

REFERENCES:
patent: 5181437 (1993-01-01), Chi
patent: 5233885 (1993-08-01), Lin et al.
patent: 5460455 (1995-10-01), Chen

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