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Class Information
Number: 361/150
Name: Electricity: electrical systems and devices > Control circuits for electromagnetic devices > Systems for magnetizing, demagnetizing, or controlling the magnetic field > Demagnetizing > Television degaussing
Description: Subject matter wherein the demagnetizing system or process is peculiar to a television receiver.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8379363 Bulk erase tool to erase a perpendicular media recording disk of a disk drive Feb. 19, 2013
8345402 Degaussing apparatus with highly uniform magnetic field Jan. 1, 2013
7593210 Permanent magnet bulk degausser Sep. 22, 2009
7164569 Mechanism for automated permanent magnet degaussing Jan. 16, 2007
7145761 Degaussing coil holder Dec. 5, 2006
7120003 Circuit arrangement with power factor correction, as well as a corresponding appliance Oct. 10, 2006
6914384 Degaussing circuit for CRT monitor Jul. 5, 2005
6671007 Method and apparatus for mounting a degaussing coil Dec. 30, 2003
6635994 Method and apparatus for demagnetizing color CRT Oct. 21, 2003
6625012 Degaussing coil fixing holder for a monitor Sep. 23, 2003
6556412 Degaussing apparatus and method for rotatable video display apparatus Apr. 29, 2003
6091198 Demagnetization circuit for cathode-ray tube video device Jul. 18, 2000
6055026 Apparatus for holding degauss coil Apr. 25, 2000
5990623 Method for controlling degaussing coil of cathode ray tube Nov. 23, 1999
5962978 Apparatus for automatically degaussing a color picture tube in response to a power conservation mode Oct. 5, 1999
5952786 Auto deguassing from stand-by to on Sep. 14, 1999
5953081 Complementing circuit for tilt of picture in a display device Sep. 14, 1999
5940261 Circuit and method independent of frequency and voltage deviations of supply voltage, and display apparatus incorporating same circuit Aug. 17, 1999
5923520 Demagnetizing circuit and current limiting device Jul. 13, 1999
5901029 Method of degaussing a color cathode ray tube May. 4, 1999
5831508 Component for a demagnetization circuit Nov. 3, 1998
5828279 Degaussing coil holder for cathode ray tube Oct. 27, 1998
5825131 Tilt compensation circuit for picture tubes Oct. 20, 1998
5815361 Magnetic field shielding device in display Sep. 29, 1998
5751112 CRT magnetic compensating circuit with parallel amorphous wires in the sensor May. 12, 1998
5745191 Switching degaussing circuit for television set Apr. 28, 1998
5742128 Apparatus for mitigating the effects of ambient magnetic fields on the operation of a CRT Apr. 21, 1998
5742127 Degaussing system for cathode ray tube which prevents display of visual distortion Apr. 21, 1998
5739638 Bus controlled arrangement using a duty cycle modulated control signal in a CRT Apr. 14, 1998
5736914 Demagnetizing device for a cathode ray tube Apr. 7, 1998
5729092 CRT focus mask degaussing arrangement responsive to a breakdown event Mar. 17, 1998
5715130 Demagnetization circuit and components therefor Feb. 3, 1998
5696565 Demagnetizing device is automatically energized after counting a set number of power-on operations of a cathode ray tube Dec. 9, 1997
5696427 Adjustable retainer for degaussing coil Dec. 9, 1997
5675219 Degaussing circuit for wide-range ac Oct. 7, 1997
5672940 Television power supply with polarity-independent charging paths Sep. 30, 1997
5642175 Color cathode ray tube display device and method of eliminating the influence of an external magnetic field Jun. 24, 1997
5594615 Method and apparatus for reducing the intensity of magenetic field emissions from display device Jan. 14, 1997
5559401 Color display device comprising a color display tube and a delaying demagnetizing device Sep. 24, 1996
5541805 Time delay control switch for vertical deflection in television receiver Jul. 30, 1996
5526221 Degaussing circuit Jun. 11, 1996
5510682 Magnetism-erasing circuit for use in cathode ray tubes using a D-C power supply Apr. 23, 1996
5499156 Forced, resonant degaussing system and method Mar. 12, 1996
5469321 Magnetizing device having variable charge storage network and voltage control Nov. 21, 1995
5432492 Deflection yoke apparatus with auxiliar coils to compensensate magnetic leakage Jul. 11, 1995
5416595 Methods and apparatus for securing a degaussing coil May. 16, 1995
5404084 Method of and apparatus for canceling electric field Apr. 4, 1995
5404121 Deflection yoke with a triangular magnetic-field leakage canceling coil Apr. 4, 1995
5379117 Supporting member for a VLMF coil Jan. 3, 1995
5343111 Cathode ray tube and degaussing coil employed therein Aug. 30, 1994

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