Title: System for preventing erasure of audio recordings

Abstract: A system prevents erasure of audio material pre-recorded on a magnetic recording strip on a card or photograph. Erasure of any selected portion of the recording strip is prevented by securing material to the card or photograph to thicken the card or photograph along the length of the magnetic strip that is not to be erased. The thickened portion of the card cannot be inserted into or moved along a slot in a magnetic eraser, and the thickened portion of the card is detected in a recording machine for disabling the record mode of the recorder to prevent recording over the portion of the magnetic strip that should not be erased. The material thickening the card is preferably secured to the face of the card opposite the face bearing the magnetic strip.

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Inventors: Wild, Albert F. (Rochester, NY, US)

Application Number: 580149
Filing Date: 1975-05-23
Publication_date: 1976-09-07
Assignee: Tapecon, Inc. (Rochester, NY)
Primary Class(es): 360/60 360/2, 434/311
Other Classes:
US Patent Ref:

3641277	Feb, 1972	Campbell	360/60.
3755641	Aug, 1973	Rackman	360/60.
3777074	Dec, 1973	Olmsted	360/60.
3860961	Jan, 1975	Budrose	360/60.
3869718	Mar, 1975	Schmidt	360/60.

Other Refs:
Primary Examiner: Konick, Bernard
Assistant Examiner: Lucas, Jay P.
Attorney: Stonebraker, Shepard & Stephens