Bottom bracket bearing assembly for a bicycle

Details Bottom bracket bearing assembly for a bicycle Bottom bracket bearing assembly for a bicycle

1995-11-14

1997-06-03

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

745942, F16C 1950, G05G 114

Patent

active

056347278

ABSTRACT:
A bottom bracket bearing for a bicycle is provided which includes an axle, a pair of ball bearings, a flanged cup, and an adjusting cup disposed within a five-way tube. The axle has a reducing quadrangle extending from both ends thereof, and a continuation area between the quadrangle portion an a cylindrical portion of the axle, and has a flat circular flange formed adjacent the cylindrical portion. A joint-packing is positioned against the flat circular flange, the thickness of the joint-packing extending at least 1 mm beyond the flat end of the flanged cup, thereby substantially preventing the crank with the chain wheels from contacting the flanged cup.

REFERENCES:
patent: 582750 (1897-05-01), Leaycraft
patent: 3903754 (1975-09-01), Morroni
patent: 4201120 (1980-05-01), Segawa
patent: 5209581 (1993-05-01), Nagano
patent: 5223885 (1993-06-01), Lin et al.

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