Transmission and reading guide rapid return device for an auxili

Details Transmission and reading guide rapid return device for an auxili Transmission and reading guide rapid return device for an auxili

1993-05-10

1993-12-14

Wilson, John J.

Education and demonstration

Language

Spelling, phonics, word recognition, or sentence formation

434178, G09B 1704

Patent

active

052696880

ABSTRACT:
A transmission and reading guide rapid return device for an auxiliary reading apparatus which includes a driving wheel driven by a DC motor through a transmission gear unit to move a reading guide in either direction alternatively, a switch, and a control bar driven by the reading guide to switch the switch between the forward position and the return position. The revolving speed of the DC motor is regulated by changing the voltage to the DC motor.

REFERENCES:
patent: 3262219 (1966-07-01), Bristol
patent: 3698103 (1972-10-01), Harmon
patent: 4880385 (1989-11-01), Huang

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