Patents by Inventor Roy D. Rasmussen

Roy D. Rasmussen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10413435
    Abstract: A pre-loaded stent graft delivery device and stent graft, the stent graft delivery device. The stent graft has at least one fenestration or side arm and the fenestration is preloaded with an indwelling guide wire. The indwelling guide wire are configured to receive the access sheaths. A handle assembly at a distal end of the guide wire catheter. The handle includes a multiport manifold with access ports to the auxiliary lumens in the pusher catheter. Upon deployment of the stent graft into the vasculature of a patient, the indwelling guide wire can be used to facilitate catheterization of a side branch or target vessel through the fenestration or be used to stabilize the access sheath during catheterization, advancement of the access sheath into the target vessel and deployment of a covered or uncovered stent therein through the access sheath.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: September 17, 2019
    Assignees: The Cleveland Clinic Foundation, Cook Medical Technologies LLC
    Inventors: Roy K. Greenberg, Krasnodar Ivancev, David Ernest Hartley, Werner D. Ducke, Erik E. Rasmussen
  • Patent number: 9455604
    Abstract: A wound-field synchronous machine includes a stator and a rotor. Around the rotor is a rotor sleeve including a damper bar assembly forming an amortisseur circuit.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: September 27, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Roy D. Rasmussen, William Louis Wentland, John F. Bangura
  • Patent number: 9030074
    Abstract: A wedge for use in a generator rotor has a wedge body with a central radially top surface of the wedge body, formed with a plurality of blades. At least some of the plurality of blades extend at an angle such that a plane defined through the blades will be non-perpendicular to a rotational axis of the rotor that will receive the wedge.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: May 12, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Joseph Kenneth Coldwate, Roy D. Rasmussen
  • Patent number: 8917003
    Abstract: A permanent magnet rotor for use on an electrical generator comprises a hub having an outer peripheral surface and an inner peripheral bore centered on an axis. The inner peripheral bore is provided with a screw thread at least over a portion of an axial dimension. Permanent magnets are mounted on the outer peripheral surface of the hub. A containment band is positioned radially outwardly of the magnets, holding the magnets and the hub together. The hub, a generator rotor incorporating the permanent magnet rotor, and a generator incorporating the permanent magnet rotor are also disclosed and claimed in this application.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 23, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Roy D. Rasmussen, Scott R. Ganong, Glenn C. Lemmers, Jr.
  • Patent number: 8878409
    Abstract: A rotor has a rotor body for rotation about a shaft. A plurality of permanent magnets are spaced circumferentially about the rotor body. A containment band is positioned radially outwardly of the permanent magnets. The containment band has a containment band coefficient of thermal expansion. The permanent magnets have a permanent magnet coefficient of thermal expansion, taken parallel to a magnetic alignment. A ratio of the containment band coefficient of thermal expansion to the permanent magnet coefficient of thermal expansion is less than or equal to 1.15.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: November 4, 2014
    Assignee: Hamilton Sundstrand Space Systems International, Inc.
    Inventors: Craig R. Legros, Roy D. Rasmussen
  • Patent number: 8769804
    Abstract: A method of assembling an electric motor is provided. The method includes positioning a guide rod within a motor housing and along an axial direction of the motor housing, wherein the guide rod is disposed radially inward of a plurality of motor components. Also included is guiding a rotor along the guide rod and radially inward of the plurality of motor components.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: July 8, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Roy D. Rasmussen, Aaron M. Finke, Nathan D. Lewis
  • Publication number: 20140103774
    Abstract: A wound-field synchronous machine includes a stator and a rotor. Around the rotor is a rotor sleeve including a damper bar assembly forming an amortisseur circuit.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Roy D. Rasmussen, William Louis Wentland, John F. Bangura
  • Publication number: 20140070634
    Abstract: A rotor has a rotor body for rotation about a shaft. A plurality of permanent magnets are spaced circumferentially about the rotor body. A containment band is positioned radially outwardly of the permanent magnets. The containment band has a containment band coefficient of thermal expansion. The permanent magnets have a permanent magnet coefficient of thermal expansion, taken parallel to a magnetic alignment. A ratio of the containment band coefficient of thermal expansion to the permanent magnet coefficient of thermal expansion is less than or equal to 1.15.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Inventors: Craig R. Legros, Roy D. Rasmussen
  • Publication number: 20140001901
    Abstract: An electric motor has a primary and a secondary seal isolating a rotor cavity from a stator cavity.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 2, 2014
    Inventors: Adam M. Finney, Roy D. Rasmussen, Aaron M. Finke
  • Publication number: 20130293055
    Abstract: A wedge for use in a generator rotor has a wedge body with a central radially top surface of the wedge body, formed with a plurality of blades. At least some of the plurality of blades extend at an angle such that a plane defined through the blades will be non-perpendicular to a rotational axis of the rotor that will receive the wedge.
    Type: Application
    Filed: May 4, 2012
    Publication date: November 7, 2013
    Inventors: Joseph Kenneth Coldwate, Roy D. Rasmussen
  • Publication number: 20130205581
    Abstract: A method of assembling an electric motor is provided. The method includes positioning a guide rod within a motor housing and along an axial direction of the motor housing, wherein the guide rod is disposed radially inward of a plurality of motor components. Also included is guiding a rotor along the guide rod and radially inward of the plurality of motor components.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 15, 2013
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Roy D. Rasmussen, Aaron M. Finke, Nathan D. Lewis
  • Publication number: 20130193781
    Abstract: An insulated electric motor includes a stator core having a stator cavity. Also included is an adhering material disposed within at least one portion of the stator cavity. Further included is a filling substance disposed within the at least one portion of the stator cavity and adhered to the adhering material, wherein the adhering material and the filling substance substantially fill the stator cavity.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 1, 2013
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Roy D. Rasmussen, Aaron M. Finke
  • Patent number: 8138642
    Abstract: A rotor for a dynamoelectric machine may include a rotor shaft having a first shaft and a second shaft within the first shaft. The two shafts include discharge orifices for communicating a cooling fluid through the machine. A rotor core of the machine includes a lamination having an annular portion that circumscribes an open center, a plurality of pole portions extending outwardly from the annular portion, and coil winding regions adjacent to the pole portions. One or more channels extend between the open center and the coil winding regions to communicate a cooling fluid. Coil windings of the machine may be at least partially encased in insulators. Each insulator may include a fluid entry orifice located between the insulator ends to communicate a cooling fluid. An end plate of the machine may include fluid discharge outlets for communicating cooling fluid received from the coil windings.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: March 20, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Glenn C. Lemmers, Jr., Scott R. Ganong, Roy D. Rasmussen, Debabrata Pal
  • Patent number: 8053938
    Abstract: A core assembly for an electric motor includes a heat exchanger comprising a plurality of fins. The fins define a plurality of cooling air passages that include offset fins that disrupt cooling air flow to reduce the formation of boundary layers and improve heat transfer capacity.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: November 8, 2011
    Assignee: Hamilton Sundstand Corporation
    Inventors: Debabrata Pal, Mark Hamilton Severson, Roy D. Rasmussen
  • Patent number: 8018114
    Abstract: A wedge for use in a generator rotor includes a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor, and said flat surfaces extending to a radially outermost extent of the wedge body. A wedge and winding combination, a generator rotor, a generator and a method all using the wedges are disclosed and claimed.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: September 13, 2011
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Roy D. Rasmussen, Scott R. Ganong, Glenn C. Lemmers, Jr.
  • Publication number: 20100320850
    Abstract: A rotor for a dynamoelectric machine may include a rotor shaft having a first shaft and a second shaft within the first shaft. The two shafts include discharge orifices for communicating a cooling fluid through the machine. A rotor core of the machine includes a lamination having an annular portion that circumscribes an open center, a plurality of pole portions extending outwardly from the annular portion, and coil winding regions adjacent to the pole portions. One or more channels extend between the open center and the coil winding regions to communicate a cooling fluid. Coil windings of the machine may be at least partially encased in insulators. Each insulator may include a fluid entry orifice located between the insulator ends to communicate a cooling fluid. An end plate of the machine may include fluid discharge outlets for communicating cooling fluid received from the coil windings.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 23, 2010
    Inventors: Glenn C. Lemmers, JR., Scott R. Ganong, Roy D. Rasmussen, Debabrata Pal
  • Publication number: 20100283346
    Abstract: A permanent magnet rotor for use on an electrical generator comprises a hub having an outer peripheral surface and an inner peripheral bore centered on an axis. The inner peripheral bore is provided with a screw thread at least over a portion of an axial dimension. Permanent magnets are mounted on the outer peripheral surface of the hub. A containment band is positioned radially outwardly of the magnets, holding the magnets and the hub together. The hub, a generator rotor incorporating the permanent magnet rotor, and a generator incorporating the permanent magnet rotor are also disclosed and claimed in this application.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 11, 2010
    Inventors: Roy D. Rasmussen, Scott R. Ganong, Glenn C. Lemmers, JR.
  • Publication number: 20100244614
    Abstract: A wedge for use in a generator rotor includes a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor, and said flat surfaces extending to a radially outermost extent of the wedge body. A wedge and winding combination, a generator rotor, a generator and a method all using the wedges are disclosed and claimed.
    Type: Application
    Filed: March 26, 2009
    Publication date: September 30, 2010
    Inventors: Roy D. Rasmussen, Scott R. Ganong, Glenn C. Lemmers, JR.
  • Publication number: 20090160281
    Abstract: A rotor assembly includes several permanent magnets separated by spacers. The permanent magnets and the spacers are all fabricated from material having the same coefficient of thermal expansion. The spacers are in a non-magnetized state and provide support for a sleeve placed in a high interference fit with the permanent magnets. The sleeve is thereby fully supported about the inner circumference such that uneven bending stresses are significantly reduced to provide a desired operational life.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Inventors: Roy D. Rasmussen, Craig R. Legros
  • Publication number: 20090121564
    Abstract: A core assembly for an electric motor includes a heat exchanger comprising a plurality of fins. The fins define a plurality of cooling air passages that include offset fins that disrupt cooling air flow to reduce the formation of boundary layers and improve heat transfer capacity.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Inventors: Debabrata Pal, Mark Hamilton Severson, Roy D. Rasmussen