| Patent | Date |
|---|
Double/twin Radial Air Gap Permanent Magnet Brushless Motor
App 20200274430 - Petersen; Christian C. | 2020-08-27 |
Vertical stator double gas D.C. PM motors
Grant 7,598,649 - Petersen October 6, 2 | 2009-10-06 |
Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor
Grant 7,202,620 - Petersen April 10, 2 | 2007-04-10 |
Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor
Grant 7,166,948 - Petersen January 23, 2 | 2007-01-23 |
Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor
App 20060261690 - Petersen; Christian C. | 2006-11-23 |
Vertical stator double gas d.c. PM motors
App 20060244338 - Petersen; Christian C. | 2006-11-02 |
Electrodynamic apparatus and method of manufacture
App 20060119192 - Petersen; Christian C. | 2006-06-08 |
Multiphase motors with single point sensing based commutation
Grant 7,026,773 - Petersen April 11, 2 | 2006-04-11 |
Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor
App 20060055270 - Petersen; Christian C. | 2006-03-16 |
Electrodynamic apparatus and method of manufacture
Grant 7,005,764 - Petersen February 28, 2 | 2006-02-28 |
Multiphase motors with single point sensing based commutation
App 20050184690 - Petersen, Christian C. | 2005-08-25 |
Electrodynamic Apparatus and method of manufacture
App 20050140241 - Petersen, Christian C. | 2005-06-30 |
Multiphase motors with single point sensing based commutation
Grant 6,891,343 - Petersen May 10, 2 | 2005-05-10 |
Plastic encapsulated electrodynamic apparatus
Grant 6,798,111 - Petersen September 28, 2 | 2004-09-28 |
Multiphase motors with single point sensing based commutation
App 20040178757 - Petersen, Christian C. | 2004-09-16 |
PM motor and generator with a vertical stator core assembly formed of pressure shaped processed ferromagnetic particles
Grant 6,707,224 - Petersen March 16, 2 | 2004-03-16 |
Pm Motor And Generator With A Vertical Stator Core Assembly Formed Of Pressure Shaped Processed Ferromagnetic Particles
App 20040041482 - Petersen, Christian C. | 2004-03-04 |
PM motor and generator with a vertical stator core assembly formed of pressure shaped processed ferromagnetic particles
Grant 6,617,747 - Petersen September 9, 2 | 2003-09-09 |
D.C. PM motor and generator with a stator core assembly formed of pressure shaped processed ferromagnetic particles
Grant 6,617,740 - Petersen September 9, 2 | 2003-09-09 |
D.C. PM motor and generator with a stator core assembly formed of pressure shaped processed ferromagnetic particles
App 20020135260 - Petersen, Christian C. | 2002-09-26 |
D.c. Pm Motor With A Stator Core Assembly Formed Of Pressure Shaped Processed Ferromagnetic Particles
App 20020093268 - Petersen, Christian C. | 2002-07-18 |
Permanent magnet D.C. motor having a radially-disposed working flux gap
Grant 5,874,796 - Petersen February 23, 1 | 1999-02-23 |
Permanent magnet d.c. motor having a radially-disposed working flux gap
Grant 5,659,217 - Petersen August 19, 1 | 1997-08-19 |
D.C. motor
Grant 4,949,000 - Petersen August 14, 1 | 1990-08-14 |
Method and apparatus for precisely moving a motor armature
Grant 4,870,306 - Petersen September 26, 1 | 1989-09-26 |
D.C. motor
Grant 4,837,474 - Petersen , et al. June 6, 1 | 1989-06-06 |
D.C. motor with axially disposed working flux gap
Grant 4,745,345 - Petersen May 17, 1 | 1988-05-17 |
Magnetic position indicator and actuator using same
Grant 4,731,579 - Petersen , et al. March 15, 1 | 1988-03-15 |
Magnetic position indicator using multiple probes
Grant 4,658,214 - Petersen April 14, 1 | 1987-04-14 |
Twin rotatable electromagnetically driven blade mechanism
Grant 4,558,938 - Petersen December 17, 1 | 1985-12-17 |
Electromagnetic blade mechanism
Grant 4,558,937 - Petersen , et al. December 17, 1 | 1985-12-17 |
Apparatus for orienting magnetic particles in recording media
Grant 4,543,551 - Petersen September 24, 1 | 1985-09-24 |
Electromagnetic actuator generating equal and opposing force vectors
Grant 4,531,820 - Petersen July 30, 1 | 1985-07-30 |
Camera motor belt drive system
Grant 4,433,273 - Petersen February 21, 1 | 1984-02-21 |
Apparatus for continuously incrementing an output member
Grant 4,420,714 - Petersen , et al. December 13, 1 | 1983-12-13 |
Camera shutter having bobbin driven blades
Grant 4,415,251 - Petersen November 15, 1 | 1983-11-15 |
Method and apparatus which change magnetic forces of a linear motor
Grant 4,409,576 - Petersen October 11, 1 | 1983-10-11 |
Efficient electromagnetic actuator usable as photographic shutter
Grant 4,407,578 - Petersen October 4, 1 | 1983-10-04 |
Linear motor
Grant 4,363,980 - Petersen December 14, 1 | 1982-12-14 |
Shutter blade drive system
Grant 4,265,530 - Petersen May 5, 1 | 1981-05-05 |
Apparatus for automatically controlling transmission of light through a lens system
Grant 4,264,154 - Petersen April 28, 1 | 1981-04-28 |
Intrusion alarm control system
Grant 4,122,437 - Petersen October 24, 1 | 1978-10-24 |
Smoke detector
Grant 4,063,227 - Petersen December 13, 1 | 1977-12-13 |
Inertia switch for anti-intrusion sensing systems
Grant 4,012,611 - Petersen March 15, 1 | 1977-03-15 |
Electromagnetically regulated exposure control system
Grant 3,927,415 - Petersen December 16, 1 | 1975-12-16 |
Method And Circuit For Recording Audio Signals On Magnetic Tape
Grant 3,852,813 - Petersen December 3, 1 | 1974-12-03 |
Tape Recording Apparatus And System Having A Very Thin Cassette
Grant 3,691,312 - Petersen September 12, 1 | 1972-09-12 |
Exposure Control System For Document Copying Apparatus
Grant 3,563,143 - Petersen February 16, 1 | 1971-02-16 |
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