Patents by Inventor Tom Maciejowski

Tom Maciejowski 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).

  • Double-pintle emission control valve having a one-piece double-seat element
    Patent number: 7011081
    Abstract: A cylindrical-walled seat element (50) in a double-pintle (42) EEGR valve (20) is a machined metal part in which two substantially identical apertures (62, 64) collectively span essentially a semi-circumference of the seat element wall (52) and are separated by a narrow axial stabilizer bar (80) in that wall.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: March 14, 2006
    Assignee: Siemens VDO Automotive Inc.
    Inventors: Bernard J. Hrytzak, Tom Maciejowski
  • Double-pintle emission control valve having a one-piece double-seat element
    Publication number: 20050183703
    Abstract: A cylindrical-walled seat element (50) in a double-pintle (42) EEGR valve (20) is a machined metal part in which two substantially identical apertures (62, 64) collectively span essentially a semi-circumference of the seat element wall (52) and are separated by a narrow axial stabilizer bar (80) in that wall.
    Type: Application
    Filed: February 24, 2004
    Publication date: August 25, 2005
    Inventors: Bernard Hrytzak, Tom Maciejowski