Dynamic magnetic information storage or retrieval – Head – Core
Patent
1974-06-24
1976-05-25
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Head
Core
360 92, H04M 164, G11B 2304, G11B 1568
Patent
active
039595919
ABSTRACT:
A telephone answering apparatus is provided which is simple in its construction as compared with the usual prior art systems, but which is capable of performing all the operations performed by the prior art systems, and more. The apparatus of the invention includes electronic solid state circuitry, and it is simplified materially as compared with the usual prior art mechanisms. The embodiment to be described utilizes but two mechanical relays to perform all the switching operations. A multiple channel announcement tape deck is used with a simplified channel changing mechanism. A cassette-type tape is included to record the messages from the calling party for convenient message storage. The cassette is spring loaded so that it can be pulled back for a "fast forward" tape drive capability. The apparatus involves a simplified mechanical assembly as compared with the prior art units of the same general type in that, iner alia, a single drive motor is used for all the tape drive mechanisms, and an improved progressive inter-lock system is used to assure that only one tape drive mechanism will be activated at any one time.
REFERENCES:
patent: 3455559 (1969-07-01), Wilson
patent: 3649762 (1972-03-01), Okamura
patent: 3700818 (1972-10-01), Tatematsu et al.
patent: 3721765 (1973-03-01), Ho
patent: 3780226 (1973-12-01), Jacobson
patent: 3860963 (1975-01-01), Ueda
Beecher Keith D.
Canney Vincent P.
T.A.D. Avanti, Inc.
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