Patents by Inventor Alan R. Barker

Alan R. Barker 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).

  • Tapped auxiliary winding for multi-speed operation of electric motor and method therefor
    Patent number: 4937513
    Abstract: A capacitor motor and method is disclosed which utilizes one or more tap points within the auxiliary winding of the motor which can be selectively connectd to a source of AC power via a selector switch for multi-speed operation of the motor.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: June 26, 1990
    Assignee: Emerson Electric Co.
    Inventors: Keith I. Hoemann, Alan R. Barker
  • Reversing PSC motor design capable of high reversal reptition rate
    Patent number: 4886990
    Abstract: A reversible permanent split capacitor (PSC) motor and method of designing such a motor employs a parallelogram lamination silhouette and distributes the winding in the core of the motor stator assembly so that maximum flux density in the core is approximately equal in each direction of motor rotation. The motor is designed to achieve high repetition reversal rates. The reversal rate and the equal performance attained in each direction, makes the design particularly suitable for washing machine applications.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: December 12, 1989
    Assignee: Emerson Electric Co.
    Inventor: Alan R. Barker
  • Tapped auxiliary winding for multi-speed operation of electric motor and method therefor
    Patent number: 4737701
    Abstract: A capacitor motor and method is disclosed which utilizes one or more tap points within the auxiliary winding of the motor which can be selectively connected to a source of AC power via a selector switch for multi-speed operation of the motor.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: April 12, 1988
    Assignee: Emerson Electric Co.
    Inventors: Keith I. Hoemann, Alan R. Barker
  • Tapped auxiliary winding for multi-speed operation of electric motor and method therefor
    Patent number: 4486699
    Abstract: A capacitor motor and method is disclosed which utilizes one or more tap points within the auxiliary winding of the motor which can be selectively connected to a source of AC power via a selector switch for multi-speed operation of the motor.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: December 4, 1984
    Assignee: Emerson Electric Co.
    Inventors: Keith I. Hoemann, Alan R. Barker