Rotational speed switcher

Details Rotational speed switcher Rotational speed switcher

1991-04-09

1992-05-26

Bui, Thuy M.

Endless belt power transmission systems or components

Control for forward and reverse

G03B 100

Patent

active

051162814

ABSTRACT:
A rotational speed switcher which employs a synchronous motor which is low-cost, long-lasting and quiet, and when applied to a printer or document scanning apparatus or the like enables documents to be transported at either of two speeds selected by switching the motor between forward and reverse operating modes without changing the direction of rotation of the drive shafts.

REFERENCES:
patent: 3643896 (1972-02-01), Kadowaki
patent: 4411397 (1983-10-01), Karsh et al.

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