Telephone answering device utilizing Mobius loop activating swit

Details Telephone answering device utilizing Mobius loop activating swit Telephone answering device utilizing Mobius loop activating swit

1974-02-11

1976-04-27

Canney, Vincent P.

H04M 164, G11B 1506

Patent

active

039536793

ABSTRACT:
A telephone answering device employing a conventional tape recorder and an endlesss broadcast recording tape having a twist of 180.degree. therein, popularly known as a Mobius loop, driven by the drive capstan of the conventional tape recorder, activates a tone switch and a shut-off switch in alternate 360.degree. revolutions of the broadcast tape.

REFERENCES:
patent: 2496047 (1950-01-01), Goddard
patent: 3281039 (1966-10-01), Foley
patent: 3310629 (1967-03-01), Yamamoto et al.
patent: 3445600 (1969-05-01), Todd
patent: 3663766 (1972-05-01), Goto
patent: 3713039 (1973-01-01), Hashimoto

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