Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Reexamination Certificate
2006-06-13
2006-06-13
Jackson, Stephen W. (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
C361S267000
Reexamination Certificate
active
07061742
ABSTRACT:
A manually operated continuous-use desk-top magnetic media eraser/degausser that utilizes elaborately shielded state-of-the-art Rare Earth Magnets to uniformly remove magnetically recorded information from audio and video tapes, PC diskettes, and many other types of magnetic media that can be accommodated by the component's 1.0625 inches high by 4.125 inches wide media transport pathway. The media, as it traverses the pathway, passes through a very strong magnetic field created by two powerful grade N40 (40 MGOe) patented neodymium (NdFeB) permanent magnets placed perpendicular and end-to-end under the center of said pathway. As the recorded media is manually manipulated through the pathway, over the magnets, and out the exit, magnetic information stored on said media is removed by the strong magnetic lines of force present within the protective triple-shielded top, bottom, and side components surrounding the transport pathway.
REFERENCES:
patent: 5132860 (1992-07-01), Von Stein
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