Inventor
ERDMAN DAVID M
US40 patents
⚠️ This page may combine multiple inventors who share the name “ERDMAN DAVID M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
36 patentsUS5376866ADec 27, 1994
Motor controls, refrigeration systems and methods of motor operation and control
GEN ELECTRIC118 citations99
US4459519AJul 10, 1984
Electronically commutated motor systems and control therefor
GEN ELECTRIC854 citations99
US5657638AAug 19, 1997
Two speed control circuit for a refrigerator fan
GEN ELECTRIC98 citations98
US6271638B1Aug 7, 2001
Brushless D. C. motor and control assembly
GEN ELECTRIC92 citations97
US5986419ANov 16, 1999
Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor
GEN ELECTRIC109 citations97
US5796194AAug 18, 1998
Quadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motor
GEN ELECTRIC105 citations97
US4015182AMar 29, 1977
Refrigeration system and control therefor
GEN ELECTRIC163 citations97
US6239532B1May 29, 2001
Motor with external rotor
GEN ELECTRIC53 citations96
US5986379ANov 16, 1999
Motor with external rotor
GEN ELECTRIC53 citations96
US5847524ADec 8, 1998
Constant speed control for a motor
GEN ELECTRIC52 citations96
US5227704AJul 13, 1993
Motor controls, refrigeration systems and methods of motor operation and control
GEN ELECTRIC53 citations96
US5125067AJun 23, 1992
Motor controls, refrigeration systems and methods of motor operation and control
GEN ELECTRIC100 citations96
US5028073AJul 2, 1991
Dynamic vehicle suspension system including electronically commutated motor
GEN ELECTRIC90 citations96
US5023527AJun 11, 1991
Control circuits, electronically commutated motor systems and methods
GEN ELECTRIC153 citations96
US4763347AAug 9, 1988
Control system, electronically commutated motor system, blower apparatus and methods
GEN ELECTRIC130 citations96
US4654566AMar 31, 1987
Control system, method of operating an electronically commutated motor, and laundering apparatus
GEN ELECTRIC103 citations96
US4638233AJan 20, 1987
Method of establishing a preferred rate of air flow, method of determining torque, and apparatus
GEN ELECTRIC79 citations96
US4556827ADec 3, 1985
Laundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, method of operating an electronically commutated motor, and circuit
GEN ELECTRIC85 citations96
US4449079AMay 15, 1984
Control system for an electronically commutated motor
GEN ELECTRIC60 citations96
US4390826AJun 28, 1983
Laundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, method of operating an electronically commutated motor, and circuit
GEN ELECTRIC87 citations96
US4005347AJan 25, 1977
Electronically commutated motor and method of making same
GEN ELECTRIC83 citations96
US6479957B1Nov 12, 2002
Integral motor and control
GEN ELECTRIC46 citations95
US6414408B1Jul 2, 2002
Integral motor and control
GEN ELECTRIC69 citations95
US6348752B1Feb 19, 2002
Integral motor and control
GEN ELECTRIC61 citations95
US4998052AMar 5, 1991
Gearless direct drive switched reluctance motor for laundry application
GEN ELECTRIC71 citations94
US4513230AApr 23, 1985
Laundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, and method of operating an electronically commutated motor
GEN ELECTRIC33 citations93
US5982122ANov 9, 1999
Capacitively powered motor and constant speed control therefor
GEN ELECTRIC19 citations92
USRE35124EDec 19, 1995
Control system, electronically commutated motor system, draft inducer apparatus and method
GEN ELECTRIC50 citations92
US5696430ADec 9, 1997
Circuit, motor, and method generating a signal representing back EMF in an energized motor winding
GEN ELECTRIC50 citations91
US5646491AJul 8, 1997
Electrical motor with a differential phase back EMF sensing circuit for sensing rotor position
GEN ELECTRIC24 citations91
US6483265B1Nov 19, 2002
Methods and systems for minimizing vibration in electric machines
GEN ELECTRIC18 citations84
US4532459AJul 30, 1985
Laundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor and method of operating an electronically commutated motor
GEN ELECTRIC25 citations82
US6864616B2Mar 8, 2005
Method and apparatus for forming an electric motor having stacked laminations
GEN ELECTRIC8 citations74
US4950932AAug 21, 1990
Axial flow fan integral with electronically commutated motor
GEN ELECTRIC14 citations74
US6531794B1Mar 11, 2003
Method for fabricating motors of different outputs using standardized parts
GEN ELECTRIC7 citations73
US6378849B1Apr 30, 2002
Methods and apparatus for mounting motors
GEN ELECTRIC8 citations72
DANOTEK MOTION TECHNOLOGIES
3 patentsUS7750522B2Jul 6, 2010
Slow-speed direct-drive generator
DANOTEK MOTION TECHNOLOGIES32 citations89
US7701095B2Apr 20, 2010
Permanent-magnet generator and method of cooling
DANOTEK MOTION TECHNOLOGIES11 citations80
US7966716B2Jun 28, 2011
Method of assembling direct-drive generator
DANOTEK MOTION TECHNOLOGIES0 citations48