Bicycle freewheel

Details Bicycle freewheel Bicycle freewheel

1974-08-20

1976-08-03

Wyche, Benjamin W.

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

74217B, 192 64, F16H 1104, F16D 4118, F16H 710

Patent

active

039722457

ABSTRACT:
There is disclosed a Derailleur block comprising a sleeve adapted to be secured to a bicycle wheel hub, a sprocket carrier mounted on the sleeve with interposed ball races and free wheeling mechanism, and a number of sprockets having different numbers of teeth secured in axially spaced relationship on the carrier. At one end of the block there is a cone for adjusting the ball-race clearances in co-axial screw threaded engagement in the carrier, and in screw-threaded engagement with the protruding end of the cone, there is a lock nut. The lock nut serves not only to secure the cone after adjustment, but as an abutment for the sprocket assembly which is thereby readily removable. Both cone and lock nut are accessible for manipulation externally of the block.

REFERENCES:
patent: 3492883 (1970-02-01), Maeda
patent: 3554340 (1971-01-01), Shimano
patent: 3648519 (1972-03-01), Nakata et al.
patent: 3661021 (1972-05-01), Ohshita

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