Patents by Inventor Mark A. Pigza

Mark A. Pigza 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).

  • Control circuitry for enabling drive system for vacuum cleaner
    Patent number: 7000285
    Abstract: A self-propelled appliance comprises a base, electric motor mounting the base, a handle moveably depending from the base and a drive wheel mounted in the base and operatively connected to the motor. The control circuits comprising an enable switch and a base switch control the communication of power from the power supply to the motor relative to a gripping of the handle by a user of the appliance and a selective positioning of the handle relative to the base.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: February 21, 2006
    Assignee: Royal Appliance Mfg. Co.
    Inventors: Michael P. Conner, Steven J. Paliobeis, Robert A. Vystreil, Mark A. Pigza
  • Control circuitry for enabling drive system for vacuum cleaner
    Publication number: 20040134018
    Abstract: A self-propelled appliance comprises a base, electric motor mounting the base, a handle moveably depending from the base and a drive wheel mounted in the base and operatively connected to the motor. The control circuits comprising an enable switch and a base switch control the communication of power from the power supply to the motor relative to a gripping of the handle by a user of the appliance and a selective positioning of the handle relative to the base.
    Type: Application
    Filed: January 9, 2003
    Publication date: July 15, 2004
    Applicant: Royal Appliance Mfg. Co.
    Inventors: Michael P. Conner, Steven J. Paliobeis, Robert A. Vystrcil, Mark A. Pigza