Patents by Inventor David Najewicz

David Najewicz 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: 7356865
    Abstract: The present invention relates to a method and apparatus for removing contaminants from a solvent based cleaning fluid. An article cleaning apparatus comprises an ultrafiltration filter having a pore size of about 0.01 microns to about 0.2 microns. A method for performing a solvent based cleaning process using an article cleaning apparatus comprises passing a solvent based cleaning fluid through an ultrafiltration filter having a having a pore size of about 0.01 microns to about 0.2 microns.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: April 15, 2008
    Assignee: General Electric Company
    Inventors: James Rulon Young Rawson, David Najewicz
  • Publication number: 20070251519
    Abstract: An appliance includes a chassis defining a cavity and having an opening for accessing the cavity and a door assembly joined to the chassis. The door assembly includes a door for closing access to the opening, and the door assembly further includes a door lift sub-assembly having a horizontal slide and a vertical slide. The door is coupled to one of the horizontal slide and the vertical slide. The horizontal slide is moveable between a recessed position and an extended position and is configured to move the door in a substantially horizontal direction. The vertical slide is moveable between a closed position and an open position and is configured to move the door in a substantially vertical direction.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 1, 2007
    Inventors: Sanjay Anikhindi, David Najewicz, Marc Hottenroth
  • Publication number: 20070125745
    Abstract: A method of manufacturing an ignition device is provided. The method includes patterning a plurality of resistors on a membrane to form heating elements and thermally isolating the heating elements from an external environment via a cavity disposed adjacent to the heating elements.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 7, 2007
    Inventors: Kanakasabapathi Subramanian, Richard Saia, Aaron Knobloch, David Najewicz, Nicholas Okruch
  • Publication number: 20070128563
    Abstract: An ignition device for a gas appliance is provided. The ignition device includes a membrane and a plurality of heating elements embedded in the membrane, wherein the heating elements comprise a plurality of patterned resistors and wherein the plurality of heating elements are configured to heat a surface on application of voltage through the heating elements. The ignition device also includes a cavity disposed adjacent to the heating elements and configured to provide thermal isolation of the heating elements.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 7, 2007
    Inventors: Kanakasabapathi Subramanian, Richard Saia, Aaron Knobloch, Nicholas Okruch, David Najewicz
  • Publication number: 20060090741
    Abstract: A gas range includes a gas cooktop including a plurality of gas cooktop burners, and an oven coupled to the gas cooktop. The oven includes an oven cavity comprising a top portion, a bottom portion, a rear portion coupled to the top and bottom portions, a first side portion, and a second side portion, the first and second side portions coupled to the top, bottom, and rear portions respectively, at least one gas oven burner positioned proximate to the bottom portion within the oven cavity; and a first electrical heating element positioned proximate the top portion within the oven cavity.
    Type: Application
    Filed: November 3, 2004
    Publication date: May 4, 2006
    Inventors: Howard Bowles, John Smith, Timothy Shaffer, David Najewicz
  • Publication number: 20060057520
    Abstract: A control valve assembly includes an inlet for receiving a gas flow and an outlet for providing the gas flow to a gas burner. The assembly also includes a positive-shutoff valve for interrupting the gas flow from the inlet. A micro electromechanical system (MEMS) valve is coupled in series to the positive-shutoff value between the inlet and the outlet for regulating the gas flow from the inlet to the outlet.
    Type: Application
    Filed: September 16, 2004
    Publication date: March 16, 2006
    Inventors: Richard Saia, David Najewicz, Charles Seeley, Guanghua Wu, Aaron Knobloch
  • Publication number: 20050224069
    Abstract: A kitchen ventilation system includes a sensor for detecting a chemical composition over an active zone of a cooktop. The system also includes an air moving device for displacing air including the chemical composition and an air flow direction control device for directing air displaced by the air moving device between exhaust and recirculation flow paths. A control circuitry is coupled to the sensor, to the air moving device and to the air flow direction control device for regulating operation of the air moving device and a position of the air flow direction control device based upon signals from the sensor.
    Type: Application
    Filed: March 29, 2004
    Publication date: October 13, 2005
    Inventors: Mahendra Patil, David Najewicz
  • Publication number: 20050221243
    Abstract: An enhanced gas range system includes a pressure regulator adapted to regulate a gas flow from a gas feed line. The system also includes a gas fuel boost pump disposed downstream of the pressure regulator and adapted to increase pressure of the gas flow received from the gas feed line. A gas burner is disposed to receive the gas flow from the gas fuel boost pump.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 6, 2005
    Inventors: David Najewicz, Joell Hibshman, Venkatraman lyer
  • Publication number: 20050133751
    Abstract: A piezoelectric microvalve and method for controlling a fluid flow through a piezoelectric microvalve are provided. The microvalve includes an inlet plenum and a flow directing structure for directing a fluid flow, wherein a first side of the structure is in fluid communication with the inlet plenum. The microvalve also includes a piezoelectric bending actuator comprising a flap portion responsive to a command signal for controlling a fluid flow through the flow directing structure. The microvalve further includes an outlet plenum in fluid communication with a second side of the flow directing structure.
    Type: Application
    Filed: December 17, 2003
    Publication date: June 23, 2005
    Inventors: Charles Seeley, Richard Saia, Christopher Kapusta, David Najewicz, Anis Zribi, Guanghua (George) Wu
  • Publication number: 20050060813
    Abstract: A fluid-dispenser device for a washing machine having a wash basket is provided. The basket may define radii extending in a horizontal plane relative to a circumference in correspondence with respect to the wash basket. The device includes at least two outlet ports positioned to direct respective jets of fluid into the wash basket. Each of the jets may have a distinctive exit angle relative to a respective radius in such a horizontal plane and passing through the respective outlet ports. In another aspect thereof, each of the jets may have a generally parallel relationship with respect to one another.
    Type: Application
    Filed: September 24, 2003
    Publication date: March 24, 2005
    Inventors: Mahendra Patil, David Najewicz, Timothy Shaffer
  • Publication number: 20050022316
    Abstract: The present invention relates to a method and apparatus for removing contaminants from a solvent based cleaning fluid. An article cleaning apparatus comprises an ultrafiltration filter having a pore size of about 0.01 microns to about 0.2 microns. A method for performing a solvent based cleaning process using an article cleaning apparatus comprises passing a solvent based cleaning fluid through an ultrafiltration filter having a having a pore size of about 0.01 microns to about 0.2 microns.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 3, 2005
    Inventors: James Rawson, David Najewicz