Patents by Inventor Renyan William Fei

Renyan William Fei 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: 8115443
    Abstract: A PSC motor includes a stator core, a rotor arranged in a rotation relationship with respect to the stator core, a first to eighth winding coil sets wound around the stator core and a capacitor. The motor has two kinds of configurations for 4-pole and 6-pole operation modes, respectively. Both configurations comprise a primary winding and a secondary winding which is connected in series with the capacitor, and have two reversible operation directions. The configurations operate different sets of winding coils when operating in different directions.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: February 14, 2012
    Assignee: Nidec Motor Corporation
    Inventors: Renyan William Fei, Liang Sun
  • Publication number: 20100123427
    Abstract: A PSC motor includes a stator core, a rotor arranged in a rotation relationship with respect to the stator core, a first to eighth winding coil sets wound around the stator core and a capacitor. The motor has two kinds of configurations for 4-pole and 6-pole operation modes, respectively. The configuration for the 4-pole mode comprises a primary winding and a secondary winding which is connected in series with the capacitor, and has two reversible operation directions. When operating at one direction, the primary winding includes the first to fourth winding coil sets, and the secondary winding includes the fifth to the eighth winding coil sets; and when operating at another direction, the primary winding includes the fifth to the eighth winding coil sets, and the secondary winding includes the first to fourth winding coil sets.
    Type: Application
    Filed: November 19, 2009
    Publication date: May 20, 2010
    Applicant: Emerson Electric Co.
    Inventors: Renyan William Fei, Liang Sun
  • Patent number: 7598648
    Abstract: A multi-speed single-phase induction motor including a stator having a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer. The main winding includes a plurality of coil sets. The motor is configured to energize at least one of the coil sets during 2n-pole operation and during 6n-pole operation.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: October 6, 2009
    Assignee: Emerson Electric Co.
    Inventor: Renyan William Fei
  • Patent number: 6815926
    Abstract: A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion of the 4-pole speed winding, but not all of the 4-pole speed winding is used in the 8-pole configuration. In one embodiment, the 4-pole speed winding includes four winding portions and the 8-pole speed configuration uses two of the four winding portions without the need for additional switch contacts to reconfigure the motor for operating in the 4-pole mode or the 6-pole mode. In one embodiment, shared winding portions are wound on the stator core in a generally non-sinusoidal distribution and non-shared winding portions are wound on the stator core in a generally sinusoidal distribution.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: November 9, 2004
    Assignee: Emerson Electric Co.
    Inventors: Renyan William Fei, Mark C. Dierkes
  • Publication number: 20030146732
    Abstract: A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion of the 4-pole speed winding, but not all of the 4-pole speed winding is used in the 8-pole configuration. In one embodiment, the 4-pole speed winding includes four winding portions and the 8-pole speed configuration uses two of the four winding portions without the need for additional switch contacts to reconfigure the motor for operating in the 4-pole mode or the 6-pole mode. In one embodiment, shared winding portions are wound on the stator core in a generally non-sinusoidal distribution and non-shared winding portions are wound on the stator core in a generally sinusoidal distribution.
    Type: Application
    Filed: February 6, 2002
    Publication date: August 7, 2003
    Applicant: Emerson Electric Co.
    Inventors: Renyan William Fei, Mark C. Dierkes
  • Patent number: 6271639
    Abstract: A motor includes a stator core, a rotor in rotational relationship with the stator core and a main winding on the core. In one form, the main winding includes a 4-pole configuration and an 8-pole configuration and the motor has a 4-pole auxiliary winding on the core. A switching circuit selectively simultaneously energizes a portion only of the 4-pole configuration of the main winding and the 4-pole auxiliary winding when starting the motor for energizing the main winding in the 8-pole configuration. In another form, the main winding includes a 2-pole configuration and an 4-pole configuration and the motor has a 2-pole auxiliary winding on the core. In this latter form, the switching circuit selectively simultaneously energizes a portion only of the 2-pole configuration of the main winding and the 2-pole auxiliary winding when starting the motor for energizing the main winding in the 4-pole configuration.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: August 7, 2001
    Assignee: Emerson Electric Co.
    Inventor: Renyan William Fei
  • Patent number: 6175209
    Abstract: A motor comprising a 2/4-pole permanent-split capacitor motor having a shared main winding and a shared auxiliary winding. The shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted one slot less than a phase shift of 90 degrees with respect to the 4-pole main winding. A switching circuit selectively simultaneously energizes the shared main winding and the shared auxiliary winding in the 2-pole and 4-pole configurations.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: January 16, 2001
    Assignee: Emerson Electric Co.
    Inventor: Renyan William Fei