Motor vehicles – Steam traction engines
Patent
1976-01-21
1978-02-07
Betts, Kenneth H.
Motor vehicles
Steam traction engines
74858, 200 6188, B62M 700, B62M 2504
Patent
active
040722040
ABSTRACT:
A gear selector for use on an electrically assisted cycle includes a body which is arranged to be secured to the frame of the cycle. A lever is movable manually relative to the body and is arranged to be connected to the gear mechanism of the cycle whereby movement of the lever relative to the body causes operation of the gear mechanism to change the gear ratio. A cam is movable with the lever and a cam follower engages the cam and is moved thereby. An electrical switch carried by the body and operated by movement of the cam follower, and the cam is such that the cam follower is moved to operate the switch during any movement of the lever to effect a change in gear ratio. The cam is also such that the switch is returned to its initial operative condition after the movement which effects the gear change. In an electrically assisted cycle utilizing such a gear selector mechanism the switch controls energization of the electric motor such that the motor is not energized during gear change operations.
REFERENCES:
patent: 3104559 (1963-09-01), Dotter
patent: 3187462 (1965-06-01), Licitis
patent: 3338111 (1967-08-01), Walker
patent: 3742580 (1973-07-01), Sullivan
patent: 3773131 (1973-11-01), Jaulmes
patent: 3873795 (1975-03-01), Leighton et al.
patent: 3921745 (1975-11-01), McCulloch et al.
patent: 3944766 (1976-03-01), Wood
patent: 3991843 (1976-11-01), Davidson
Davidson Charles P. D.
Leighton Peter W.
Betts Kenneth H.
Lucas Industries Limited
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