Patents by Inventor Donald J. Williams

Donald J. Williams 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).

  • Publication number: 20200315166
    Abstract: Composite materials that are palatable to a wood-destroying pest species and also pesticidal to the pest species can be used in pest control devices and can be used as wood substitutes for structural components, which are resistant to destruction by wood-destroying pests. The composite materials include a thermoplastic polymer, a food material for the pest and a pesticide. The composite material is formed by mixing a thermoplastic polymer, wood fragments or other cellulosic materials and a quantity of pesticide, and thereafter creating a molten material within a mixer, compounder, extruder or the like. The molten material is extruded or molded to form the desired shape.
    Type: Application
    Filed: April 20, 2020
    Publication date: October 8, 2020
    Inventors: Robert L. HILL, James E. KING, Joseph J. DeMARK, Anton ARNOLDY, Mike P. TOLLEY, Donald E. WILLIAMS, III, Joseph E. EGER, JR.
  • Patent number: 10593034
    Abstract: An apparatus and method for method for joining materials includes a rivet that may extend through a first sheet to be resistance welded to a second sheet. The head of the rivet has a cavity and vents allowing adhesive extruded from a pilot hole to be received in the cavity and vented in a direction parallel to the first sheet. The rivet is deformed to an hourglass shape that fills the pilot hole and displaces the first sheet into the cavity. Rivet dimension allow for holding with a robotic gripper that can be withdrawn before welding. Methods of monitoring joint quality include comparing welding parameter profiles and images of good and discrepant joints.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 17, 2020
    Assignee: Arconic Inc.
    Inventors: Donald J. Spinella, Daniel Bergstrom, Stanley E. Wojciechowski, Robert Wilcox, Justin K. Williams
  • Publication number: 20190292165
    Abstract: The present invention is related to the development of therapeutics and prophylactics for the treatment and/or prevention of filovirus infection in humans and other mammals. A new class of small molecules is disclosed that inhibits the interaction of naturally processed (i.e., proteolytically cleaved) filovirus glycoprotein (GPCL) with its host receptor Niemann-Pick C1 (NPC1) protein and thus block infection of host cells by filoviruses. Also disclosed are methods of using the small molecule inhibitors in the treatment/prevention of filovirus infection.
    Type: Application
    Filed: December 5, 2017
    Publication date: September 26, 2019
    Applicants: Microbiotix, Inc., Albert Einstein College Of Medicine, Inc., The Govermnment Of The United States As Represented By The Secretary Of The Army
    Inventors: Terry L. Bowlin, Donald T. Moir, Kartik Chandran, John M. Dye, John D. Williams, Zachary D. Aron, Jay P. Barbor, Kelly N. Lively, Peter J. Nash, Debra M. Mills, Arnab Basu
  • Patent number: 7581307
    Abstract: A method includes heating a housing of an electric machine to thermally expand the housing, positioning a mount having power and control electronics assembled thereon and in contact therewith in the housing and against an internal stop defined within the housing, and allowing the housing to cool and thermally contract against the mount thereby forming an interference fit between the housing and the mount. The interference fit secures the mount within the housing. The mount and the housing have coefficients of thermal expansion such that the interference fit is maintained across an operating temperature range of the machine. The electric machine may also include a segmented or non-segmented stator within the housing.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: September 1, 2009
    Assignee: Emerson Electric Co.
    Inventors: William P. Stewart, Donald J. Williams
  • Patent number: 7451543
    Abstract: A rotor assembly for an electric machine includes a rotatable shaft, a rotor core coupled to the shaft for common rotation, and an impeller coupled to the shaft for common rotation. A bearing is coupled to the shaft generally between the rotor core and the impeller. The bearing can include an outer race sized smaller than an opening defined by the machine housing. The bearing can include steel rolling elements such as steel balls or generally cylindrical steel rollers. An adaptor sleeve can be disposed generally around the outer race. The adaptor sleeve can be disposed within the opening defined by the housing for securing the adaptor sleeve and the bearing within the opening defined by the housing.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: November 18, 2008
    Assignee: Emerson Electric Co.
    Inventors: William P. Stewart, Charles P. Ketterer, Donald J. Williams
  • Patent number: 7196438
    Abstract: A resilient isolation member is configured for use with an electric machine having a housing, a stator within the housing, and an end shield. The resilient isolation member includes first and second end portions, a sidewall extending between the first and second end portions, and a lip is disposed along an outer surface of the sidewall. The resilient isolation member is sized for mounting between the end shield and the stator, with the first and second end portions respectively abutting against a first inner portion of the end shield and a portion of the stator and with the lip abutting against a second inner portion of the end shield and a portion of the housing.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: March 27, 2007
    Assignee: Emerson Electric Co.
    Inventors: Donald J Williams, Gary E Horst, Chetan O Modi, Michael L McCelland
  • Patent number: 7105976
    Abstract: An electric machine includes a housing, an end shield, a stator, and a rotor assembly. The end shield can define at least one pin, and the stator can define at least one track. The stator can be positioned on the end shield such that the pin is received within the track. The stator can be captured between the end shield and a stop within the housing. The rotor assembly can include an adaptor sleeve and/or a bearing with a plurality of steel rolling elements. End caps can be coupled to the stator, and power and control electronics can be integrated within the housing.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: September 12, 2006
    Assignee: Emerson Electric Co.
    Inventors: William P. Stewart, Raymond D. Heilman, Charles P. Ketterer, Paul G. Michaels, Donald J. Williams
  • Patent number: 7012350
    Abstract: A switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates forming a stator segment core, an end cap assembly, and winding wire wound around the stator segment core and the end cap assembly. The rotor defines a plurality of rotor poles. The rotor tends to rotate relative to the stator to maximize the inductance of an energized winding. A drive circuit energizes the winding wire around the stator segment assemblies based on a rotational position of the rotor. Each stator plate includes a first radially outer rim section and a tooth section that extends radially inwardly from a first center portion of the first radially outer rim section.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: March 14, 2006
    Assignee: Emerson Electric Co.
    Inventors: C. Theodore Peachee, Donald J. Williams, James A. Wafer, Marielle Piron, Steven P. Randall, Richard S. Wallace, Jr., Michael L. McClelland
  • Patent number: 6897591
    Abstract: A sensorless switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates forming a stator segment core, an end cap assembly, and winding wire wound around the stator segment core and the end cap assembly. The rotor defines a plurality of rotor poles. The rotor tends to rotate relative to the stator to a rotational position that maximizes the inductance of an energized winding. A sensorless drive circuit derives rotor position and energizes the winding wire around the stator segment assemblies based on the derived rotor position. Each stator plate includes a first radially outer rim section and a tooth section that extends radially inwardly from a first center portion of the first radially outer rim section.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: May 24, 2005
    Assignee: Emerson Electric Co.
    Inventors: C. Theodore Peachee, Donald J. Williams, James A. Wafer, Marielle Piron, Steven P. Randall, Richard S. Wallace, Jr., Michael L. McClelland
  • Patent number: 6744166
    Abstract: A winding end cap assembly for an electric machine with a stator and stator poles includes first and second end caps that are connected to opposite axial end surfaces of one of the stator poles. First and second inner winding retainer sections extend axially to connect an inner end of the first end cap to an inner end of the second end cap. The first and second end caps include an outer section, an inner section and a hub section that connects the outer section to the inner section. The first and second end caps and the first and second inner winding retainer sections define a continuous annular channel that receives and retains winding wire. First and second outer retainer sections connect the first and second end caps adjacent to the outer sections or the hub sections of the first and second end caps.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: June 1, 2004
    Assignee: Emerson Electric Co.
    Inventors: Bernard G. Harter, James A. Wafer, Donald J. Williams
  • Patent number: 6700284
    Abstract: A fan assembly includes a fan housing and a fan. A switched reluctance fan motor is mounted in an inlet of the fan housing and includes a shaft that is connected to the fan. The switched reluctance fan motor includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include a stator segment core. Winding wire is wound around the stator segment core. A rotor tends to rotate relative to the stator to a rotational position that maximizes the inductance of an energized winding. A drive circuit energizes the winding wire around the stator segment assemblies based on the rotational position of the rotor. End cap assemblies are connected to opposite axial ends of the stator segment core. The end cap assemblies define an annular channel for receiving the winding wire and for preventing winding creep.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: March 2, 2004
    Assignee: Emerson Electric Co.
    Inventors: Donald J. Williams, Steven P. Randall, Craig E. Wallace
  • Patent number: 6584813
    Abstract: A washing machine includes a tub that is rotated by a switched reluctance motor. The tub includes an outer tub and an inner tub. The drive is a direct drive or a drive assembly that includes a shaft, a belt and a spinner pulley connected to the tub. The switched reluctance motor includes a stator with a plurality of circumferentially-spaced stator segment assemblies. Winding wire is wound around a stator segment core of the stator segment assemblies. A rotor is connected to the shaft that drives the belt and rotates the spinner pulley. A drive circuit energizes the winding wire around the stator segment assemblies based on a rotational position of the rotor. End cap assemblies are connected to opposite axial ends of the stator segment core. The end cap assemblies define an annular channel for receiving the winding wire and for preventing winding creep.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: July 1, 2003
    Assignee: Emerson Electric Co.
    Inventors: C. Theodore Peachee, Donald J. Williams, Steven P. Randall
  • Patent number: 6487769
    Abstract: Methods and apparatus are disclosed for assembling an electric machine. The electric machine includes a plurality of stator segment assemblies that are mounted inside of a housing of an electric machine. The stator segment assemblies are positioned around an outer surface of an assembly fixture. The stator segment assemblies are held to the assembly fixture using a magnetic field that is generated by the assembly fixture. The housing is press fit or hot dropped over the stator segment assemblies. If the housing is hot dropped, the housing is heated to cause the housing to expand. The housing is positioned over the stator segment assemblies while the housing is hot. The housing cools and contracts around the stator segment assemblies to form an interference fit with the stator segment assemblies and then the stator and the housing are removed from the assembly fixture.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: December 3, 2002
    Assignee: Emerson Electric Co.
    Inventors: Charles P. Ketterer, Donald J. Williams, Raymond D. Heilman
  • Publication number: 20020139606
    Abstract: An electric power steering system for a vehicle includes a steering wheel, a steering shaft connected to said steering wheel, and a switched reluctance motor coupled to said steering shaft. The switched reluctance motor includes a segmented stator having a plurality of stator segment assemblies that define salient stator poles and inter-pole stator slots. Each of the stator segment assemblies includes a stack of stator plates defining a stator segment core, an end cap assembly, and winding wire that is wound around the stator segment core and the end cap assembly. The rotor tends to rotate relative to the stator to a rotational position that maximizes the inductance of an energized winding. A drive circuit energizes the winding wire around the stator segment assemblies based on the rotational position of the rotor.
    Type: Application
    Filed: April 3, 2001
    Publication date: October 3, 2002
    Inventors: Donald J. Williams, James A. Wafer, Marielle Piron, Michael L. McClelland
  • Publication number: 20020135254
    Abstract: A sensorless switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates forming a stator segment core, an end cap assembly, and winding wire wound around the stator segment core and the end cap assembly. The rotor defines a plurality of rotor poles. The rotor tends to rotate relative to the stator to a rotational position that maximizes the inductance of an energized winding. A sensorless drive circuit derives rotor position and energizes the winding wire around the stator segment assemblies based on the derived rotor position. Each stator plate includes a first radially outer rim section and a tooth section that extends radially inwardly from a first center portion of the first radially outer rim section.
    Type: Application
    Filed: March 26, 2001
    Publication date: September 26, 2002
    Inventors: C. Theodore Peachee, Donald J. Williams, James A. Wafer, Marielle Piron, Steven P. Randall, Richard S. Wallace, Michael L. McClelland
  • Publication number: 20020134118
    Abstract: A washing machine includes a tub that is rotated by a switched reluctance motor. The tub includes an outer tub and an inner tub. The drive is a direct drive or a drive assembly that includes a shaft, a belt and a spinner pulley connected to the tub. The switched reluctance motor includes a stator with a plurality of circumferentially-spaced stator segment assemblies. Winding wire is wound around a stator segment core of the stator segment assemblies. A rotor is connected to the shaft that drives the belt and rotates the spinner pulley. A drive circuit energizes the winding wire around the stator segment assemblies based on a rotational position of the rotor. End cap assemblies are connected to opposite axial ends of the stator segment core. The end cap assemblies define an annular channel for receiving the winding wire and for preventing winding creep.
    Type: Application
    Filed: March 26, 2001
    Publication date: September 26, 2002
    Inventors: C. Theodore Peachee, Donald J. Williams, Steven P. Randall
  • Publication number: 20020125782
    Abstract: A switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates forming a stator segment core, an end cap assembly, and winding wire wound around the stator segment core and the end cap assembly. The rotor defines a plurality of rotor poles. The rotor tends to rotate relative to the stator to maximize the inductance of an energized winding. A drive circuit energizes the winding wire around the stator segment assemblies based on a rotational position of the rotor. Each stator plate includes a first radially outer rim section and a tooth section that extends radially inwardly from a first center portion of the first radially outer rim section.
    Type: Application
    Filed: March 12, 2001
    Publication date: September 12, 2002
    Inventors: C. T. Peachee, Donald J. Williams, James A. Wafer, Marielle Piron, Steven P. Randall, Richard S. Wallace, Michael L. McClelland
  • Publication number: 20020084716
    Abstract: A winding end cap assembly for an electric machine with a stator and stator poles includes first and second end caps that are connected to opposite axial end surfaces of one of the stator poles. First and second inner winding retainer sections extend axially to connect an inner end of the first end cap to an inner end of the second end cap. The first and second end caps include an outer section, an inner section and a hub section that connects the outer section to the inner section. The first and second end caps and the first and second inner winding retainer sections define a continuous annular channel that receives and retains winding wire. First and second outer retainer sections connect the first and second end caps adjacent to the outer sections or the hub sections of the first and second end caps.
    Type: Application
    Filed: January 4, 2001
    Publication date: July 4, 2002
    Inventors: Bernard G. Harter, James A. Wafer, Donald J. Williams
  • Publication number: 20020062548
    Abstract: Methods and apparatus are disclosed for assembling an electric machine. The electric machine includes a plurality of stator segment assemblies that are mounted inside of a housing of an electric machine. The stator segment assemblies are positioned around an outer surface of an assembly fixture. The stator segment assemblies are held to the assembly fixture using a magnetic field that is generated by the assembly fixture. The housing is press fit or hot dropped over the stator segment assemblies. If the housing is hot dropped, the housing is heated to cause the housing to expand. The housing is positioned over the stator segment assemblies while the housing is hot. The housing cools and contracts around the stator segment assemblies to form an interference fit with the stator segment assemblies and then the stator and the housing are removed from the assembly fixture.
    Type: Application
    Filed: November 30, 2000
    Publication date: May 30, 2002
    Inventors: Charles P. Ketterer, Donald J. Williams, Raymond D. Heilman
  • Patent number: D515521
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: February 21, 2006
    Assignee: Emerson Electric Co.
    Inventors: William P. Stewart, Donald J. Williams