Patents by Inventor Dragan Radavcovic

Dragan Radavcovic 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).

  • Multiple brush-type motor control apparatus and method
    Patent number: 6774587
    Abstract: A motor circuit includes a first brush-type motor, a second brush-type motor, a switch, and a pulse width modulation circuit. The first brush-type motor has a first voltage connection and a second voltage connection, the second voltage connection adapted to be coupled to a source of DC voltage. The second brush-type motor has a third voltage connection and a fourth voltage connection, the fourth voltage connection adapted to be coupled to the source of DC voltage. The switch has a control input, a first contact and a second contact, the first contact coupled to the source of DC voltage, and the second contact coupled to the first voltage connection and the third voltage connection. The switch is operable to selectively connect the first contact to the second contact based on a voltage at the control input. The pulse width modulation circuit is operable to generate a pulse width modulated (PWM) signal.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: August 10, 2004
    Assignee: Siemens VDO Automotive Inc.
    Inventors: John E. Makaran, Dragan Radavcovic
  • Multiple brush-type motor control apparatus and method
    Publication number: 20030117093
    Abstract: A motor circuit includes a first brush-type motor, a second brush-type motor, a switch, and a pulse width modulation circuit. The first brush-type motor has a first voltage connection and a second voltage connection, the second voltage connection adapted to be coupled to a source of DC voltage. The second brush-type motor has a third voltage connection and a fourth voltage connection, the fourth voltage connection adapted to be coupled to the source of DC voltage. The switch has a control input, a first contact and a second contact, the first contact coupled to the source of DC voltage, and the second contact coupled to the first voltage connection and the third voltage connection. The switch is operable to selectively connect the first contact to the second contact based on a voltage at the control input. The pulse width modulation circuit is operable to generate a pulse width modulated (PWM) signal.
    Type: Application
    Filed: September 25, 2002
    Publication date: June 26, 2003
    Inventors: John E. Makaran, Dragan Radavcovic