Patents Assigned to Tomco Incorporated
  • Exhaust gas recirculation valve
    Patent number: 4953518
    Abstract: An exhaust gas recirculation (EGR) valve for controlling the amount of exhaust entering the intake manifold of an internal combustion engine. The EGR valve comprises a universal base so that a single base may fit many makes and models of vehicles, a diaphragm valve having two ports facing opposite directions protruding from the top of said valve, making connection of a vacuum hose to the EGR valve easier, and a back pressure transducer wherein the transducer has means to alter the vacuum required to close the valve.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: September 4, 1990
    Assignee: Tomco Incorporated
    Inventors: Robert F. Killion, Michael J. Wolfe