Apparatus for demagnetizing the magnetic head of a cassette...

Details Apparatus for demagnetizing the magnetic head of a cassette... Apparatus for demagnetizing the magnetic head of a cassette...

G - Physics

11

B

352/30

G11B 5/465 (2006.01)

Patent

CA 1315877

ABSTRACT OF THE DISCLOSURE A simple and inexpensive demagnetizer for the magnetic heads of a tape cassette recording and/or reproducing device includes an intermediate gear which is rotated by either one of two hub gears engaging respective drive spindles of the recording and/or reproducing device. A push-pull rod has one end pivotally connected to an outer radial position of the intermediate gear and another end pivotally connected to a source of alternating magnetic field of constant intensity. Rotation of the intermediate gear causes the magnetic field generator to be cyclically and linearly reciprocated with respect to the head so as to produce a decreasing magnetic field at the head.

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