Inventor · disambiguated record
David M. Erdman
Also filed as: ERDMAN DAVID · ERDMAN DAVID M
41 granted patents·3 pending applications·3,364 citations·filing 1974–2010
99Inventor score
Top patents by PatentIndex Score
44 records- 0199US5376866AMotor controls, refrigeration systems and methods of motor operation and controlGEN ELECTRIC·Filed 1993·Granted Dec 27, 1994·118 cites·28 claims
- 0299US4459519AElectronically commutated motor systems and control thereforGEN ELECTRIC·Filed 1980·Granted Jul 10, 1984·854 cites·11 claims
- 0399US4015182ARefrigeration system and control thereforGEN ELECTRIC·Filed 1974·Granted Mar 29, 1977·163 cites·10 claims
- 0498US4763347AControl system, electronically commutated motor system, blower apparatus and methodsGEN ELECTRIC·Filed 1987·Granted Aug 9, 1988·130 cites·57 claims
- 0597US5986419AQuadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motorGEN ELECTRIC·Filed 1998·Granted Nov 16, 1999·109 cites·14 claims
- 0697US4654566AControl system, method of operating an electronically commutated motor, and laundering apparatusGEN ELECTRIC·Filed 1983·Granted Mar 31, 1987·103 cites·132 claims
- 0797US4556827ALaundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, method of operating an electronically commutated motor, and circuitGEN ELECTRIC·Filed 1982·Granted Dec 3, 1985·85 cites·50 claims
- 0897US4005347AElectronically commutated motor and method of making sameGEN ELECTRIC·Filed 1974·Granted Jan 25, 1977·83 cites·23 claims
- 0996US5796194AQuadrature axis winding for sensorless rotor angular position control of single phase permanent magnet motorGEN ELECTRIC·Filed 1996·Granted Aug 18, 1998·105 cites·23 claims
- 1096US5125067AMotor controls, refrigeration systems and methods of motor operation and controlGEN ELECTRIC·Filed 1991·Granted Jun 23, 1992·100 cites·39 claims
- 1196US5023527AControl circuits, electronically commutated motor systems and methodsGEN ELECTRIC·Filed 1990·Granted Jun 11, 1991·153 cites·143 claims
- 1295US6271638B1Brushless D. C. motor and control assemblyGEN ELECTRIC·Filed 1996·Granted Aug 7, 2001·92 cites·20 claims
- 1395US4390826ALaundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, method of operating an electronically commutated motor, and circuitGEN ELECTRIC·Filed 1980·Granted Jun 28, 1983·87 cites·21 claims
- 1494US6479957B1Integral motor and controlGEN ELECTRIC·Filed 2001·Granted Nov 12, 2002·46 cites·52 claims
- 1594US4998052AGearless direct drive switched reluctance motor for laundry applicationGEN ELECTRIC·Filed 1989·Granted Mar 5, 1991·71 cites·45 claims
- 1693US7750522B2Slow-speed direct-drive generatorDANOTEK MOTION TECHNOLOGIES·Filed 2007·Granted Jul 6, 2010·32 cites·7 claims
- 1793US6414408B1Integral motor and controlGEN ELECTRIC·Filed 1995·Granted Jul 2, 2002·69 cites·4 claims
- 1893US5028073ADynamic vehicle suspension system including electronically commutated motorGEN ELECTRIC·Filed 1990·Granted Jul 2, 1991·90 cites·37 claims
- 1992US5657638ATwo speed control circuit for a refrigerator fanGEN ELECTRIC·Filed 1995·Granted Aug 19, 1997·98 cites·23 claims
- 2091US6348752B1Integral motor and controlGEN ELECTRIC·Filed 1992·Granted Feb 19, 2002·61 cites·13 claims
- 2191US5075608AControl system, electronically commutated motor system, draft inducer apparatus and methodERDMAN DAVID M·Filed 1990·Granted Dec 24, 1991·89 cites·75 claims
- 2289US4638233AMethod of establishing a preferred rate of air flow, method of determining torque, and apparatusGEN ELECTRIC·Filed 1985·Granted Jan 20, 1987·79 cites·19 claims
- 2388US5227704AMotor controls, refrigeration systems and methods of motor operation and controlGEN ELECTRIC·Filed 1991·Granted Jul 13, 1993·53 cites·15 claims
- 2488US4449079AControl system for an electronically commutated motorGEN ELECTRIC·Filed 1982·Granted May 15, 1984·60 cites·10 claims
- 2586US5847524AConstant speed control for a motorGEN ELECTRIC·Filed 1997·Granted Dec 8, 1998·52 cites·18 claims
- 2685US6239532B1Motor with external rotorGEN ELECTRIC·Filed 1999·Granted May 29, 2001·53 cites·37 claims
- 2785US5986379AMotor with external rotorGEN ELECTRIC·Filed 1996·Granted Nov 16, 1999·53 cites·66 claims
- 2882USRE35124EControl system, electronically commutated motor system, draft inducer apparatus and methodGEN ELECTRIC·Filed 1993·Granted Dec 19, 1995·50 cites·76 claims
- 2982US4513230ALaundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, and method of operating an electronically commutated motorGEN ELECTRIC·Filed 1982·Granted Apr 23, 1985·33 cites·82 claims
- 3081US7701095B2Permanent-magnet generator and method of coolingDANOTEK MOTION TECHNOLOGIES·Filed 2007·Granted Apr 20, 2010·11 cites·10 claims
- 3177US5696430ACircuit, motor, and method generating a signal representing back EMF in an energized motor windingGEN ELECTRIC·Filed 1995·Granted Dec 9, 1997·50 cites·23 claims
- 3276US4532459ALaundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor and method of operating an electronically commutated motorGEN ELECTRIC·Filed 1982·Granted Jul 30, 1985·25 cites·91 claims
- 3374US6483265B1Methods and systems for minimizing vibration in electric machinesGEN ELECTRIC·Filed 2000·Granted Nov 19, 2002·18 cites·20 claims
- 3463US5646491AElectrical motor with a differential phase back EMF sensing circuit for sensing rotor positionGEN ELECTRIC·Filed 1995·Granted Jul 8, 1997·24 cites·37 claims
- 3562US6531794B1Method for fabricating motors of different outputs using standardized partsGEN ELECTRIC·Filed 2000·Granted Mar 11, 2003·7 cites·14 claims
- 3662US5982122ACapacitively powered motor and constant speed control thereforGEN ELECTRIC·Filed 1996·Granted Nov 9, 1999·19 cites·15 claims
- 3761US6722015B2Assembly method for stamped and cupped laminationsGEN ELECTRIC·Filed 2001·Granted Apr 20, 2004·9 cites·6 claims
- 3860US6378849B1Methods and apparatus for mounting motorsGEN ELECTRIC·Filed 2001·Granted Apr 30, 2002·8 cites·20 claims
- 3958US6864616B2Method and apparatus for forming an electric motor having stacked laminationsGEN ELECTRIC·Filed 2001·Granted Mar 8, 2005·8 cites·25 claims
- 4049US7966716B2Method of assembling direct-drive generatorDANOTEK MOTION TECHNOLOGIES·Filed 2010·Granted Jun 28, 2011·0 cites·4 claims
- 4149US4950932AAxial flow fan integral with electronically commutated motorGEN ELECTRIC·Filed 1989·Granted Aug 21, 1990·14 cites·46 claims
- 4244US2008030088A1Compact integrated brushless permanent-magnet motor & driveGIZAW DANIEL·Filed 2007·Application pending·0 cites
- 4340US2003127929A1Method for fabricating motors of different outputs using standardized partsFiled 2003·Application pending·0 cites
- 4434US2001011879A1Multi-speed motor controlFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when David M. Erdman files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →