Transmission device with switchable gear ratios

Details Transmission device with switchable gear ratios Transmission device with switchable gear ratios

2007-07-10

2007-07-10

Estremsky, Sherry (Department: 3681)

Machine element or mechanism

Gearing

Interchangeably locked

Reexamination Certificate

active

11169896

ABSTRACT:
In a transmission device with switchable gear ratios, a driving gear is disposed onto an output shaft of a motor, a rocker arm is pivoted on the output shaft through an electromagnetic clutch, a rocker arm gear mounted on the rocker arm is driven by the driving gear, a first gear set is driven by the rocker arm gear when the rocker arm is at a first position, a second gear set is driven by the rocker arm gear when the rocker arm is at a second position, and the first gear set and the second gear set have different output rotating speeds. In addition, a first magnetic element attracts the rocker arm at the first position, and a second magnetic element attracts the rocker arm at the second position. Thus, the gear ratio may be switched according to interactions between the electromagnetic clutch and the magnetic elements.

REFERENCES:
patent: 2431149 (1947-11-01), Sylvander
patent: 4347009 (1982-08-01), Brown
patent: 6070482 (2000-06-01), Kugio et al.
patent: 7150671 (2006-12-01), Maleika

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