Multi-ratio drive hub for bicycles with at least three different

Details Multi-ratio drive hub for bicycles with at least three different Multi-ratio drive hub for bicycles with at least three different

1984-03-02

1986-03-25

Krizmanich, George H.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74750B, F16H 344, F16H 5710

Patent

active

045775311

ABSTRACT:
The multi-ratio drive hub with at least three gears comprises a hub spindle (1) on which a driver (5) and a hub sleeve (13) are rotatably mounted. The driver (5) can be coupled with the hub sleeve (13) through at least three different drive torque paths with different step-up and/or step-down ratios. For the controlling of the torque transmission paths controllable coupling elements are provided which are all formed as controllable pawl ratchets (37, 63) and are controlled by an axial relative movement of their pawl carriers and a lift-out ramp. Such three-speed hubs have relatively small axial dimensions.

REFERENCES:
patent: 3809195 (1974-05-01), Schultz et al.
patent: 3828627 (1974-08-01), Schwerdhofer
patent: 4059028 (1977-11-01), Schulz et al.
patent: 4065984 (1978-01-01), Nakajima
patent: 4069725 (1978-01-01), Segawa
patent: 4240533 (1980-12-01), Fukui
patent: 4320672 (1982-03-01), Segawa

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