Patents by Inventor David Blumhardt

David Blumhardt 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).

  • Reagent injector with crimped pintle
    Patent number: 8998116
    Abstract: An injector for injecting a reagent includes an electromagnet and an axially translatable valve member positioned within a housing. The valve member is moveable from a seated position to an unseated position in response to energizing the electromagnet. The valve member includes a hollow tube including a curled end having a reduced diameter sized to allow a ball to partially extend beyond the tube end but not pass through the tube. The tube includes an inwardly extending detent restricting the ball from movement within the tube. A pintle head is fixed to the tube and positioned proximate the electromagnet.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: April 7, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: John M. Lowry, David Blumhardt, Eric Grant
  • REAGENT INJECTOR WITH CRIMPED PINTLE
    Publication number: 20140070031
    Abstract: An injector for injecting a reagent includes an electromagnet and an axially translatable valve member positioned within a housing. The valve member is moveable from a seated position to an unseated position in response to energizing the electromagnet. The valve member includes a hollow tube including a curled end having a reduced diameter sized to allow a ball to partially extend beyond the tube end but not pass through the tube. The tube includes an inwardly extending detent restricting the ball from movement within the tube. A pintle head is fixed to the tube and positioned proximate the electromagnet.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Inventors: John M. Lowry, David Blumhardt, Eric Grant
  • Reagent tank normalizing system
    Patent number: 8402750
    Abstract: A reagent injection system for reducing emissions from an engine includes a reagent container. A heating element is positioned in a heat transfer relationship with reagent stored within the container. An interchange tube includes a first end in receipt of a recirculated liquid reagent and a second open end positioned in the container. The interchange tube includes a bleed-off tube branching off of the interchange tube between the first and second ends. A terminal end of the bleed-off tube is positioned within a vapor dome above a surface of the reagent.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: March 26, 2013
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Ryan A. Floyd, Eric Grant, Dan McAninch, David Blumhardt, John M. Lowry, Michael L. Shovels
  • Reagent Tank Normalizing System
    Publication number: 20120141331
    Abstract: A reagent injection system for reducing emissions from an engine includes a reagent container. A heating element is positioned in a heat transfer relationship with reagent stored within the container. An interchange tube includes a first end in receipt of a recirculated liquid reagent and a second open end positioned in the container. The interchange tube includes a bleed-off tube branching off of the interchange tube between the first and second ends. A terminal end of the bleed-off tube is positioned within a vapor dome above a surface of the reagent.
    Type: Application
    Filed: October 17, 2011
    Publication date: June 7, 2012
    Inventors: Ryan A. Floyd, Eric Grant, Dan McAninch, David Blumhardt, John M. Lowry, Michael L. Shovels