Bearing assembly for a bottom bracket of a bicycle

Details Bearing assembly for a bottom bracket of a bicycle Bearing assembly for a bottom bracket of a bicycle

1994-09-29

1997-05-27

Footland, Lenard A.

Bearings

Rotary bearing

Antifriction bearing

384512, 384515, F16C 3358

Patent

active

056325614

ABSTRACT:
A bearing assembly of a bottom bracket for a bicycle, the bottom bracket includes an axle, at least one bearing, a tube and a housing, the tube engaged in the housing and the axle rotatably engaged in the tube by at least one bearing disposed therebetween. The tube has at least one annular recess defined in an inner periphery thereof and the axle has a threaded portion for threadedly engaging to a race which has an annular recess defined in an outer periphery thereof. The bearing is received between the annular recess of the tube and the annular recess of the race, an abutment between the tube and the bearing defining a first arc on a vertical plane passing through a center of the bearing, the first arc having an upper distal point and a lower distal point, the upper distal point located in the first (or the second) quadrant of the vertical plane with regard to a right-angle coordinate which has an origin of ordinates at the center of the bearing. An abutment between the race and the first bearing defining a second arc on the vertical plane, the second arc having an upper distal point and a lower distal point, the lower distal point located in the third (or the fourth) quadrant of the coordinate.

REFERENCES:
patent: 4363493 (1982-12-01), Veneklasen
patent: 4545691 (1985-10-01), Kastan et al.
patent: 4611933 (1986-09-01), Hofmann et al.
patent: 4808147 (1989-02-01), Graham

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