Patents by Inventor Kerrin Edmund Burnnand

Kerrin Edmund Burnnand 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).

  • Appliance, motor or stator
    Patent number: 10998784
    Abstract: A motor suited for use in a direct drive laundry machine. The described motor has a stator core including an annular ring with an inner diameter between 120 mm and 250 mm, a radial width between 5 mm and 15 mm, and 24 or 27 stator poles projecting outward from the annular ring a distance of between 15 mm and 40 mm. Each stator pole is associated with one of three phase windings. A rotor for the motor has inwardly facing permanent magnet poles whereby the ratio of rotor poles to stator poles is 4:3.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: May 4, 2021
    Assignee: Fisher & Paykel Appliances Limited
    Inventors: Gerald David Duncan, Kerrin Edmund Burnnand, Gregory Paul Hill
  • APPLIANCE, MOTOR OR STATOR
    Publication number: 20180159394
    Abstract: A motor suited for use in a direct drive laundry machine. The described motor has a stator core including an annular ring with an inner diameter between 120 mm and 250 mm, a radial width between 5 mm and 15 mm, and 24 or 27 stator poles projecting outward from the annular ring a distance of between 15 mm and 40 mm. Each stator pole is associated with one of three phase windings. A rotor for the motor has inwardly facing permanent magnet poles whereby the ratio of rotor poles to stator poles is 4:3.
    Type: Application
    Filed: January 18, 2018
    Publication date: June 7, 2018
    Inventors: Gerald David Duncan, Kerrin Edmund Burnnand, Gregory Paul Hill
  • Appliance, motor or stator
    Patent number: 9906084
    Abstract: A motor suited for use in a direct drive laundry machine. The described motor has a stator core including an annular ring with an inner diameter between 120 mm and 250 mm, a radial width between 5 mm and 15 mm, and 24 or 27 stator poles projecting outward from the annular ring a distance of between 15 mm and 40 mm. Each stator pole is associated with one of three phase windings. A rotor for the motor has inwardly facing permanent magnet poles whereby the ratio of rotor poles to stator poles is 4:3.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 27, 2018
    Assignee: FISHER & PAYKEL APPLIANCES LIMITED
    Inventors: Gerald David Duncan, Kerrin Edmund Burnnand, Gregory Paul Hill
  • Appliance, rotor and magnet element
    Patent number: 9509184
    Abstract: A magnet element (37) and a method of its manufacture for assembly into a rotor (38), the magnet element (37) having magnetic domains aligned anisotropically to form a domain alignment pattern (42), wherein the magnetic domain alignment pattern (42) in the magnet element (37) has an orientation that varies substantially continuously across at least part of the magnet element (37) between its lateral edges from at least partially radial to at least partially tangential.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: November 29, 2016
    Assignee: FISHER & PAYKEL APPLIANCES LIMITED
    Inventors: Gerald David Duncan, Christian John Wade Gianni, John Julian Aubrey Williams, Kerrin Edmund Burnnand, Gregory Paul Hill
  • APPLIANCE, MOTOR OR STATOR
    Publication number: 20150207371
    Abstract: A motor suited for use in a direct drive laundry machine. The described motor has 27 poles projecting outward from an annular ring. Each pole is associated with one of three phase windings. A rotor for the motor has 36 inwardly facing permanent magnet poles.
    Type: Application
    Filed: December 20, 2011
    Publication date: July 23, 2015
    Applicant: FISHER & PAYKEL APPLIANCES LIMITED
    Inventors: Gerald David Duncan, Kerrin Edmund Burnnand, Gregory Paul Hill
  • APPLIANCE, ROTOR AND MAGNET ELEMENT
    Publication number: 20130328453
    Abstract: A magnet element (37) and a method of its manufacture for assembly into a rotor (38), the magnet element (37) having magnetic domains aligned anisotropically to form a domain alignment pattern (42), wherein the magnetic domain alignment pattern (42) in the magnet element (37) has an orientation that varies substantially continuously across at least part of the magnet element (37) between its lateral edges from at least partially radial to at least partially tangential.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: FISHER & PAYKEL APPLIANCES LIMITED
    Inventors: GERALD DAVID DUNCAN, CHRISTIAN JOHN WADE GIANNI, JOHN JULIAN AUBREY WILLIAMS, KERRIN EDMUND BURNNAND, GREGORY PAUL HILL
  • APPLIANCE, ROTOR AND MAGNET ELEMENT
    Publication number: 20110012463
    Abstract: A magnet element (37) and a method of its manufacture for assembly into a rotor (38), the magnet element (37) having magnetic domains aligned anisotropically to form a domain alignment pattern (42), wherein the magnetic domain alignment pattern (42) in the magnet element (37) has an orientation that varies substantially continuously across at least part of the magnet element (37) between its lateral edges from at least partially radial to at least partially tangential.
    Type: Application
    Filed: August 1, 2008
    Publication date: January 20, 2011
    Inventors: Gerald David Duncan, Christian John Wade Gianni, John Julian Aubrey Williams, Kerrin Edmund Burnnand, Gregory Paul Hill