Patents by Inventor Steven Wells Weissner

Steven Wells Weissner 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).

  • Sensorless control induction motor rotor slot shapes and fabrication methods
    Patent number: 6874221
    Abstract: A method for fabricating an induction motor rotor lamination includes using an indexed notching die to punch a plurality of closed rotor slots at different distances from a center point of rotation by punching a first rotor slot, changing the position of a center point of the rotor lamination with respect to the notching die, and punching a second rotor slot. In another embodiment, a plurality of rotor slit patterns are punched using a variable depth indexed notching die including at least two rotor slit punching portions, one being deeper than another, by punching a first rotor slit pattern, changing the depth of closure of the notching die, and punching a second rotor slit pattern with the second rotor slit pattern having a different number of rotor slits than the first.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: April 5, 2005
    Assignee: General Electric Company
    Inventors: Patrick Lee Jansen, Steven Wells Weissner
  • Sensorless control induction motor rotor slot shapes and fabrication methods
    Publication number: 20030102762
    Abstract: A method for fabricating an induction motor rotor lamination includes using an indexed notching die to punch a plurality of closed rotor slots at different distances from a center point of rotation by punching a first rotor slot, changing the position of a center point of the rotor lamination with respect to the notching die, and punching a second rotor slot. In another embodiment, a plurality of rotor slit patterns are punched using a variable depth indexed notching die including at least two rotor slit punching portions, one being deeper than another, by punching a first rotor slit pattern, changing the depth of closure of the notching die, and punching a second rotor slit pattern with the second rotor slit pattern having a different number of rotor slits than the first.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 5, 2003
    Inventors: Patrick Lee Jansen, Steven Wells Weissner
  • Method of making an induction motor rotor
    Patent number: 6058596
    Abstract: A method for fabricating an induction motor rotor lamination includes using an indexed notching die to punch a plurality of closed rotor slots at different distances from a center point of rotation by punching a first rotor slot, changing the position of a center point of the rotor lamination with respect to the notching die, and punching a second rotor slot. In another embodiment, a plurality of rotor slit patterns are punched using a variable depth indexed notching die including at least two rotor slit punching portions, one being deeper than another, by punching a first rotor slit pattern, changing the depth of closure of the notching die, and punching a second rotor slit pattern with the second rotor slit pattern having a different number of rotor slits than the first.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: May 9, 2000
    Assignee: General Electric Company
    Inventors: Patrick Lee Jansen, Steven Wells Weissner