Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1995-08-18
1998-02-24
Fleming, Fritz
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361267, 361151, H01F 1300
Patent
active
057216657
ABSTRACT:
A bulk degaussing system for bulk erasure of various magnetic media includes a source of magnetic flux for generating a magnetic field with a predetermined field strength within a predetermined volume defining a predetermined degaussing window, a transport system for transporting the magnetic media relative to the degaussing window such that every point on the magnetic media is exposed to the magnetic field. A control circuit is included which modulates the magnetic field to reduce power consumption. In addition to reducing power consumption, the modulated magnetic field minimizes system performance degradation due to stalls of the magnetic media transport system due to interactions between the magnetic field and ferromagnetic components associated with certain magnetic media.
REFERENCES:
patent: 2481392 (1949-09-01), Camras
patent: 2766328 (1956-10-01), Handschin et al.
patent: 3023280 (1962-02-01), Tronslin et al.
patent: 3143689 (1964-08-01), Hall
patent: 3329872 (1967-07-01), Amos
patent: 3895270 (1975-07-01), Maddox
patent: 3938011 (1976-02-01), Littwin
patent: 4136373 (1979-01-01), Amos
patent: 4146956 (1979-04-01), Fujiwara
patent: 4180835 (1979-12-01), Okumura et al.
patent: 4187521 (1980-02-01), Rotter et al.
patent: 4346426 (1982-08-01), Baumann et al.
patent: 4423460 (1983-12-01), Jackson et al.
patent: 4462055 (1984-07-01), Jackson et al.
patent: 4462059 (1984-07-01), Yamagami et al.
patent: 4467389 (1984-08-01), Knipp
patent: 4471403 (1984-09-01), Dress, Jr. et al.
patent: 4639821 (1987-01-01), Littwin et al.
patent: 4730230 (1988-03-01), Helfrick
patent: 4751608 (1988-06-01), Schultz
patent: 4897759 (1990-01-01), Becker
patent: 5204801 (1993-04-01), Becker et al.
patent: 5270899 (1993-12-01), Saito
patent: 5416664 (1995-05-01), Becker et al.
Data Security, Inc.
Fleming Fritz
LandOfFree
Modulated magnet field bulk degaussing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modulated magnet field bulk degaussing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulated magnet field bulk degaussing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1878600