Patents by Inventor Jerry D. Hielkema

Jerry D. Hielkema 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).

  • Publication number: 20100072932
    Abstract: A fail-passive electro-mechanical actuator utilizing dual controllers and a two-phase brushless motor is provided.
    Type: Application
    Filed: July 30, 2009
    Publication date: March 25, 2010
    Inventors: Eric Seger, Gary L. Frederick, Richard A. Rose, Jerry D. Hielkema
  • Patent number: 6810863
    Abstract: A gas/air mixer assembly provides a Venturi metering system that may draw fuel from a zero governor, mix it with air to form a homogenous gas/air mixture for delivery to an internal combustion engine. The gas/air mixer assembly may also accept fuel under pressure from a gas metering valve or fuel injector for delivery to an internal combustion engine. The mixer includes an air horn, the relative position of which in relation to a shaped restriction body governs the air flow into the engine intake manifold. The flange of the air horn is configured to redirect the flow of air without generating significant turbulence, and providing a maximum velocity perpendicular flow to the injection of fuel to be mixed therein. The relative position of the air horn to the shaped restriction body is determined based on the cubic capacity and speed of the engine with which it is used.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: November 2, 2004
    Assignee: Woodward Governor Company
    Inventors: Bryan Memmott, Mark A. Fisher, Jerry D. Hielkema
  • Publication number: 20040089276
    Abstract: A gas/air mixer assembly provides a Venturi metering system that may draw fuel from a zero governor, mix it with air to form a homogenous gas/air mixture for delivery to an internal combustion engine. The gas/air mixer assembly may also accept fuel under pressure from a gas metering valve or fuel injector for delivery to an internal combustion engine. The mixer includes an air horn, the relative position of which in relation to a shaped restriction body governs the air flow into the engine intake manifold. The flange of the air horn is configured to redirect the flow of air without generating significant turbulence, and providing a maximum velocity perpendicular flow to the injection of fuel to be mixed therein. The relative position of the air horn to the shaped restriction body is determined based on the cubic capacity and speed of the engine with which it is used.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 13, 2004
    Applicant: Woodward Governor Company
    Inventors: Bryan Memmott, Mark A. Fisher, Jerry D. Hielkema
  • Patent number: 5803404
    Abstract: The damper is comprised of a set of core rotor magnets arranged in an opposing north/south configuration. A conducting material cylindrically encircles the rotor magnets. A set of stator magnets laterally encircle the conducting material and are arranged in the same manner as the rotor magnets. A system of gears are coupled to the damper shaft and control the rotation of the rotor magnets such that they can be positioned relative to the stator magnets to set up the desired damping torque. As the rotor and stator magnets of opposite polarity approach each other, the eddy-current in the rotating conducting material increases causing the conducting material to generate a field in response to the eddy-current. The damping torque is caused by the magnetic force generated when the induced field in the material and the stator/rotor field attempt to line up.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: September 8, 1998
    Assignee: MPC Products, Inc.
    Inventors: Anton A. Petrou, Craig H. Scott, Stephen B. Warner, Jerry D. Hielkema