1
Roger Neal Johnson, Robert Arvin Hedeen, Khan Mohamed Khirullah Genghis Khan: Method for making a rotor for an electric motor. General Electric Company, Douglas E Erickson, Marvin Snyder, January 6, 1998: US05704111 (31 worldwide citation)

A method for making a rotor for an electric motor. An elastomeric ring loosely slides over a motor shaft and inside a flux ring. End plates are attached to the longitudinal ends of the flux ring so as to longitudinally compress the elastomeric ring which radially inwardly expands against the motor s ...


2
William Alan Edelstein, Richard Philip Mallozzi, Robert Arvin Hedeen, Sayed Amr El Hamamsy, Mark Lloyd Miller, Paul Shadforth Thompson, Robert Adolph Ackermann, Bruce Campbell Amm, John Peter Fura, Mike James Radziun, David Edward Dean, Scott Thomas Mansell, Dewain Anthony Purgill, Robert Michael Vavrek: Low noise MRI scanner. General Electric Company, Jean K Testa, Jill M Breedlove, August 20, 2002: US06437568 (31 worldwide citation)

A low noise imaging apparatus for producing Magnetic Resonance (MR) images of a subject and for substantially minimizing acoustic noise generated during imaging is provided. The imaging apparatus comprises a magnet assembly, a gradient coil assembly, and a rf coil assembly, wherein at least one of t ...


3
Frederic Ghislain Pla, Robert Arvin Hedeen, Robert James Dobberstein, Thomas Gerard Ebben, Scott Thomas Mansell, Kemakolam Michael Obasih, Michael James Radziun, Peter Ping Liang Sue, William Alan Edelstein: Low noise MRI scanner. General Electric Company, Douglas E Erickson, Marvin Snyder, August 11, 1998: US05793210 (29 worldwide citation)

A magnetic-resonance-imaging (MRI) scanner subassembly. In one subassembly, a preferably annularly-cylindrical-shaped enclosure contains a first vacuum, and an MRI gradient coil assembly is located within the enclosure in the first vacuum. Preferably, an annularly-cylindrical housing is included whi ...


4
Robert Arvin Hedeen, William Alan Edelstein, Sayed Amr El Hamamsy, Kenneth Gordon Herd, Robert Adolph Ackermann: MRI magnet assembly with non-conductive inner wall. General Electric Company, Marvin Snyder, Douglas E Stoner, December 5, 2000: US06157276 (24 worldwide citation)

An MR magnet assembly includes a cylindrical vessel for housing a superconducting magnet and having a vacuum between its inner and outer walls. The vessel defines a magnet bore for receiving a patient to be imaged. A gradient coil assembly is mounted in the bore adjacent the inner wall of the magnet ...


5
William Alan Edelstein, Robert Arvin Hedeen, Anthony Mantone: Filler material for magnet resonant system self-shielded gradient coil assemblies. General Electric Company, Jean K Testa, Donald S Ingraham, August 27, 2002: US06441614 (16 worldwide citation)

A self-shielded gradient coil assembly for an MR imaging system has inner and outer gradient coil windings disposed in coaxial relationship and defining a hollow annular space therebetween. Inner and outer helical cooling tubes are affixed to the outer and inner surfaces of the inner and outer gradi ...


6
Robert Arvin Hedeen, Steven Hector Azzaro, Robert John Naumiec, Slawomir Marian Zaremba: Locomotive diagnostic system. General Electric Company, Enrique Abarca, Patrick K Patnode, April 23, 2002: US06377876 (14 worldwide citation)

A locomotive diagnostic system. A first sensor outputs a measurement of a first state variable (such as vibration) of a first locomotive component, such as a blower fan bearing set, and a second sensor outputs a measurement of a second state variable (such as rotational speed) of a second locomotive ...


7
Frederic Ghislain Pla, Imdad Imam, Robert Arvin Hedeen, Frank Albert Pitman Jr, Stephen Linwood Smith: Electrical transformer with reduced fan noise. General Electric Company, Douglas E Erickson, Marvin Snyder, January 20, 1998: US05710533 (5 worldwide citation)

An electrical transformer includes a housing, a transformer core and winding subassembly located in the housing, and a cooling fan subassembly. The cooling fan subassembly includes a variable speed fan located outside the housing, a temperature sensor located near the housing, and a controller havin ...


8
Apostolos Pavlos Karafillis, Robert Arvin Hedeen: Reinforced motor having reduced operational vibration amplitude. General Electric Company, Marvin Snyder, Douglas E Stoner, September 7, 1999: US05949163 (4 worldwide citation)

A reinforced motor for reducing amplitude of operational vibrations includes a stator having an open end, a rotor disposed through and centrally of the stator and having at least one end, an end shield mounted to the open end of the stator and having an outer surface and rotatably supporting the rot ...


9
Huageng Lou, Darren Lee Hallman, Robert Arvin Hedeen, Michael Sirak, Dennis Richter: System and method for monitoring a wind turbine gearbox. General Electric Company, Joseph J Christian, January 29, 2013: US08364424 (1 worldwide citation)

A system and method are provided to monitor the health of a wind turbine gearbox. The system includes a plurality of sensors coupled to the wind turbine gearbox and a controller coupled to the plurality of sensors. The controller is configured to acquire vibration information from a vibration sensor ...


10
Saikat Saha, Thomas Kwok fah Foo, Bruce Courtney Campbell Amm, Jean Baptiste Mathieu, Robert Arvin Hedeen: Radio frequency coil and apparatus. General Electric Company, The Small Patent Law Group, Dean D Small, April 22, 2014: US08704520 (1 worldwide citation)

A radio frequency (RF) coil for a magnetic resonance imaging (MRI) system includes a first end ring, a second end ring, and a plurality of rungs electrically coupled between the first and second end rings, each rung including a first rung portion formed from a plurality of conductors and a second ru ...