192 clutches and power-stop control – Clutches – Velocipede free wheel
Patent
1997-05-02
1999-04-27
Lorence, Richard M.
192 clutches and power-stop control
Clutches
Velocipede free wheel
192 46, 192 47, F16D 4126
Patent
active
058969691
ABSTRACT:
A switchable ratchet freewheel, under load, for multiple-gear hubs on bicycles includes a bolted pawl, a drive, a switch bush, as well as a switch ring. The switch ring, which has a positive-fit connection to the pawl, can either be lifted by a bulge on the switch bush, which acts in concert with an incline on a switch nose, provided that a small or no turning moment is conveyed, or by recesses with end faces and timing edges, which act in concert with a run-up incline on the recesses, whereby the recess enters into a short positive-fit connection with the segment of the switch nose that faces radially inward, provided that higher turning moments are present. In case the pawl is not lifted immediately, by means of the bulge acting in concert with the incline, this results in the positive fit of the recess with the switch nose, which reliably disengages the pawl bond when the run-up incline acts in concert with the timing edge.
REFERENCES:
patent: 3366206 (1968-01-01), Shimano
patent: 3670856 (1972-06-01), Segawa
patent: 3973451 (1976-08-01), Kine
patent: 4276973 (1981-07-01), Fukui
patent: 4628769 (1986-12-01), Nagano
patent: 4973297 (1990-11-01), Bergles
Fichtel & Sachs AG
Lorence Richard M.
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