Patents by Inventor Jeffrey D. Renk

Jeffrey D. Renk 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: 20100269789
    Abstract: A device and method for controlling the flow of a gaseous fuel from a fuel supply to a pressurized combustion chamber. A fuel pump is included in the gas train from supply to chamber. The fuel pump increases the pressure of the gas to allow efficient injection into the chamber. The pump is modulated to control the fuel flow. Both alternating current and pulse-width-modulated direct current signals may be used to control the flow. The pump may be a piston pump or a diaphragm pump. Feedback may be provided from sensors that determine operating parameters of the engine and such sensor signals may be used by the controller to maintain a parameter, such as temperature, at a specified value. An acoustic filter can be included in the gas train to significantly reduce gas flow pulsations generated by the pump. This filter improves the uniformity of the combustion process.
    Type: Application
    Filed: February 2, 2010
    Publication date: October 28, 2010
    Applicant: New Power Concepts LLC
    Inventors: Eric R. Jensen, Christopher C. Langenfeld, Scott W. Newell, Michael Norris, Jeffrey D. Renk, Andrew Schnellinger
  • Patent number: 7654084
    Abstract: A device and method for controlling the flow of a gaseous fuel from a fuel supply to a pressurized combustion chamber. A fuel pump is included in the gas train from supply to chamber. The fuel pump increases the pressure of the gas to allow efficient injection into the chamber. The pump is modulated to control the fuel flow. Both alternating current and pulse-width-modulated direct current signals may be used to control the flow. The pump may be a piston pump or a diaphragm pump. Feedback may be provided from sensors that determine operating parameters of the engine and such sensor signals may be used by the controller to maintain a parameter, such as temperature, at a specified value. An acoustic filter can be included in the gas train to significantly reduce gas flow pulsations generated by the pump. This filter improves the uniformity of the combustion process.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: February 2, 2010
    Assignee: New Power Concepts LLC
    Inventors: Eric Jensen, Christopher C. Langenfeld, Scott Newell, Michael Norris, Jeffrey D. Renk, Andrew Schnellinger
  • Patent number: 7111460
    Abstract: A device and method for controlling the flow of a gaseous fuel from a fuel supply to a pressurized combustion chamber. A fuel pump is included in the gas train from supply to chamber. The fuel pump increases the pressure of the gas to allow efficient injection into the chamber. The pump is modulated to control the fuel flow. Both alternating current and pulse-width-modulated direct current signals may be used to control the flow. The pump may be a piston pump or a diaphragm pump. Feedback may be provided from sensors that determine operating parameters of the engine and such sensor signals may be used by the controller to maintain a parameter, such as temperature, at a specified value. An acoustic filter can be included in the gas train to significantly reduce gas flow pulsations generated by the pump. This filter improves the uniformity of the combustion process.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: September 26, 2006
    Assignee: New Power Concepts LLC
    Inventors: Eric Jensen, Christopher C. Langenfeld, Scott Newell, Michael Norris, Jeffrey D. Renk, Andrew Schnellinger
  • Publication number: 20040033140
    Abstract: A device and method for controlling the flow of a gaseous fuel from a fuel supply to a pressurized combustion chamber. A fuel pump is included in the gas train from supply to chamber. The fuel pump increases the pressure of the gas to allow efficient injection into the chamber. The pump is modulated to control the fuel flow. Both alternating current and pulse-width-modulated direct current signals may be used to control the flow. The pump may be a piston pump or a diaphragm pump. Feedback may be provided from sensors that determine operating parameters of the engine and such sensor signals may be used by the controller to maintain a parameter, such as temperature, at a specified value. An acoustic filter can be included in the gas train to significantly reduce gas flow pulsations generated by the pump. This filter improves the uniformity of the combustion process.
    Type: Application
    Filed: August 18, 2003
    Publication date: February 19, 2004
    Applicant: New Power Concepts LLC
    Inventors: Eric R. Jensen, Christopher C. Langenfeld, Scott W. Newell, Michael Norris, Jeffrey D. Renk, Andrew Schnellinger
  • Patent number: 6606171
    Abstract: A digitizing scanner particularly for scanning transparent films such as X-rays provides an improved illuminator for transmitting light through the film. The illuminator defines a line array of a plurality of individually calibrated and controlled LEDs. The LEDs are calibrated by determining their relative points of projection on a CCD camera array. The camera array scans the LEDs and adjusts them individually to produce a predetermined illumination pattern from the group. The adjustment occurs over a plurality of cycles that address cross-talk between LEDs in the array. The camera includes anti-reflection elements to minimize bounce-back of image light and noise suppression circuitry to reduce low-level signal noise. A central processing unit, interconnected with the camera assembly includes a pixel averager to reduce the inherent resolution of the CCD to a desired level and to attenuate further noise.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: August 12, 2003
    Assignee: Howtek, Inc.
    Inventors: Jeffrey D. Renk, Richard F. Lehman, Mark R. Fernald, Calvin M. Winey