Patents by Inventor Brent J. Wortham

Brent J. Wortham 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).

  • Rotary switch assembly for stand-mounted appliance
    Patent number: 4973802
    Abstract: A rotary switch assembly for use with a stand-mounted appliance includes a conventional rotary switch which is installed through the side of the stand and mounted therein on a plate such that the stem of the switch is coaxially aligned with the long, central axis of the stand. A control knob in the form of a split, annular sleeve is snapped circumferentially around the stand to cover the opening and has an arm which extends radially inward through the opening to grasp the switch's stem such that rotation of the knob about the stand in the circumferential direction produces a corresponding rotation of the stem.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: November 27, 1990
    Assignee: Tatung Company of America, Inc.
    Inventor: Brent J. Wortham
  • Housing for a multipurpose ultrasonic cleaner
    Patent number: D315039
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: February 26, 1991
    Inventor: Brent J. Wortham
  • Fan heater
    Patent number: D319694
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: September 3, 1991
    Assignee: Tatung Company of America, Inc.
    Inventor: Brent J. Wortham
  • Housing for an air cleaner incorporating a fan, filter, ionizer and precipitator
    Patent number: D323210
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: January 14, 1992
    Assignee: Tatung Company of America, Inc.
    Inventor: Brent J. Wortham
  • Floor fan
    Patent number: D323885
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: February 11, 1992
    Assignee: Tatung Company of America, Inc.
    Inventor: Brent J. Wortham
  • Desk fan
    Patent number: D325080
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: March 31, 1992
    Assignee: Tatung Company of America, Inc.
    Inventor: Brent J. Wortham
  • Blow heater
    Patent number: D341417
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: November 16, 1993
    Assignee: Sun Star United Corporation
    Inventor: Brent J. Wortham
  • Oil filled heater
    Patent number: D341654
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: November 23, 1993
    Assignee: Sunstar United Corporation
    Inventor: Brent J. Wortham
  • Convection heater
    Patent number: D348725
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: July 12, 1994
    Assignee: Tatung Company of America, Inc.
    Inventor: Brent J. Wortham
  • Standing fan
    Patent number: D366109
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: January 9, 1996
    Assignee: Envirotech Electric, Inc.
    Inventor: Brent J. Wortham
  • Table/desk fan
    Patent number: D376843
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: December 24, 1996
    Assignee: Envirotech Electric, Inc.
    Inventor: Brent J. Wortham