Assignee
MAGNETEK INC
US92 patents
Top patents by PatentIndex Score
US5568041AOct 22, 1996
Low-cost power factor correction circuit and method for electronic ballasts
MAGNETEK INC134 citations99
US5583402ADec 10, 1996
Symmetry control circuit and method
MAGNETEK INC180 citations98
US5932995AAug 3, 1999
Dual buck converter with coupled inductors
MAGNETEK INC104 citations97
US5838181ANov 17, 1998
Pulse-width modulator circuit for use in low-cost power factor correction circuit
MAGNETEK INC38 citations96
US5274328ADec 28, 1993
Temperature compensation for magnetostrictive position detector
MAGNETEK INC73 citations96
US5831395ANov 3, 1998
Three-way fluorescent adapter
MAGNETEK INC55 citations94
US5788527AAug 4, 1998
Electrical connector with improved safety latching for a fluorescent-lighting ballast
MAGNETEK INC67 citations94
US5350316ASep 27, 1994
Fluorescent-lamp leadless ballast with improved connector
MAGNETEK INC48 citations94
US6598859B1Jul 29, 2003
Multiple hoist synchronization apparatus and method
MAGNETEK INC84 citations93
US5914547AJun 22, 1999
Auxiliary bearing assembly for reduction of unwanted shaft voltages in an electric motor
MAGNETEK INC68 citations93
US6274987B1Aug 14, 2001
Power sensing lamp protection circuit for ballasts driving gas discharge lamps
MAGNETEK INC27 citations92
US5959408ASep 28, 1999
Symmetry control circuit for pre-heating in electronic ballasts
MAGNETEK INC38 citations92
US5825639AOct 20, 1998
DC bus capacitor arrangement
MAGNETEK INC32 citations92
US5731666AMar 24, 1998
Integrated-magnetic filter having a lossy shunt
MAGNETEK INC115 citations92
US5654620AAug 5, 1997
Sensorless speed detection circuit and method for induction motors
MAGNETEK INC55 citations92
US5650925AJul 22, 1997
Diode clamping arrangement for use in electronic ballasts
MAGNETEK INC27 citations92
US5535625AJul 16, 1996
Integrated liquid level and auxiliary sensor system and method
MAGNETEK INC37 citations92
US5258707ANov 2, 1993
Method of noise rejection in a magnetostrictive position detector including determining a valid time range for propagation of sonic pulses over a reference distance
MAGNETEK INC35 citations92
US4686427AAug 11, 1987
Fluorescent lamp dimming switch
MAGNETEK INC34 citations92
US5488268AJan 30, 1996
Electrical connector with improved centering of mating terminal pins, for a fluorescent-lighting ballast
MAGNETEK INC55 citations91
US5405271AApr 11, 1995
Apparatus and method for improving assembly of leadless ballasts into fluorescent luminaires
MAGNETEK INC21 citations91
US5204587AApr 20, 1993
Fluorescent lamp power control
MAGNETEK INC30 citations91
US4872127AOct 3, 1989
Ripple rejection filter
MAGNETEK INC27 citations91
US4754407AJun 28, 1988
Digital phase synchronizer
MAGNETEK INC43 citations91
US6653804B1Nov 25, 2003
Method and apparatus for controlling a bucket hoist using a flux vector AC drive
MAGNETEK INC30 citations90
US5463522AOct 31, 1995
Housing and mounting arrangement for thermal protector device
MAGNETEK INC20 citations90
US5260678ANov 9, 1993
Fluorescent-lamp leadless ballast with improved connector
MAGNETEK INC41 citations90
US5192905AMar 9, 1993
Charging voltage control and current limit for battery chargers
MAGNETEK INC46 citations90
US5885676AMar 23, 1999
Plastic tube and method and apparatus for manufacturing
MAGNETEK INC47 citations89
US5877592AMar 2, 1999
Programmed-start parallel-resonant electronic ballast
MAGNETEK INC52 citations89
US5821649AOct 13, 1998
Electrostatic shielding system for reduction of bearing currents in electric motors
MAGNETEK INC29 citations89
US5737210AApr 7, 1998
Bridge rectifier configuration and mounting for supplying exciter current in an AC generator
MAGNETEK INC28 citations89
US6956339B1Oct 18, 2005
Multiple hoist synchronization apparatus and method
MAGNETEK INC25 citations88
US6051940AApr 18, 2000
Safety control circuit for detecting the removal of lamps from a ballast and reducing the through-lamp leakage currents
MAGNETEK INC87 citations88
US6031340AFeb 29, 2000
Device and method for capacitive bi-level switching of high intensity discharge lighting
MAGNETEK INC56 citations88
US5253521AOct 19, 1993
Method of transmitting measured temperature and position parameters from a transducer
MAGNETEK INC43 citations88
US5204595AApr 20, 1993
Method and apparatus for controlling a walking beam pump
MAGNETEK INC55 citations88
US6204602B1Mar 20, 2001
Compact fluorescent lamp and ballast assembly with an air gap for thermal isolation
MAGNETEK INC45 citations87
US6588713B2Jul 8, 2003
Anchor assembly for electrified conductor bar
MAGNETEK INC33 citations86
US6152273ANov 28, 2000
Universal arm and mounting block for a current collector
MAGNETEK INC33 citations86
US5001377AMar 19, 1991
Lubrication system with inlet and outlet packets
MAGNETEK INC34 citations86
US8374011B2Feb 12, 2013
Method and apparatus for boosting DC bus voltage
MAGNETEK INC17 citations83
US6244544B1Jun 12, 2001
Method and apparatus for holding a capacitor without separable fasteners
MAGNETEK INC20 citations83
US6118223ASep 12, 2000
Power supply for discharge lamps with balanced resonant circuit
MAGNETEK INC16 citations83
US4766337AAug 23, 1988
Open drip-proof machinery cooling system using totally enclosed type bearing brackets
MAGNETEK INC41 citations83
US7841583B1Nov 30, 2010
System and method for detecting a discontinuity in a mechanical drive train
MAGNETEK INC14 citations82
US7190146B1Mar 13, 2007
Control system and method for an overhead bridge crane
MAGNETEK INC15 citations82
US5817975AOct 6, 1998
Housing with integral mounting bracket
MAGNETEK INC54 citations82
US5729450AMar 17, 1998
Power converter with ripple current and bulk filtering supplied by high-current, high-microfarad film capacitor arrangement
MAGNETEK INC40 citations81
US9650231B2May 16, 2017
Method and apparatus for controlling a bucket hoist
MAGNETEK INC8 citations80
Showing the top 50 of 92 patents by PatentIndex Score.