The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 1988
Filed:
Mar. 31, 1987
Albert Helfrick, Boonton, NJ (US);
Dowty RFL Industries, Inc., Boonton, NJ (US);
Abstract
An apparatus and method for degaussing a magnetic storage medium, such as a reel of magnetic tape, is disclosed. A pair of opposing E-laminations have windings on their respective center legs. A reel of magnetic tape is inserted in the region between the E-laminations, and is rotated. An AC potential is coupled in series across the windings, to obtain a first magnetic field orientation in the region between the E-laminations. The direction of connection of one of the windings of the series arrangement is then reversed, to electrically alter the magnetic field orientation. This provides an effective degaussing of the magnetic tape.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile