Patents by Inventor David M. Klingbeil

David M. Klingbeil 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).

  • Method and apparatus for controlling regeneration of a particulate filter
    Patent number: 6862881
    Abstract: Apparatuses and methods for regenerating a particulate filter. A first temperature corresponding to a temperature of a catalyst that is thermally coupled with a particulate filter is determined. A second temperature corresponding to the temperature of the particulate filter is determined. Substantially no unburned hydrocarbons are delivered to the catalyst when the first temperature is below a first threshold and unburned hydrocarbons are delivered to the catalyst when the first temperature is above the first threshold and the second temperature is below a second threshold.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: March 8, 2005
    Assignee: Caterpillar Inc
    Inventors: David M. Klingbeil, Michael P. Withrow
  • Wear compensating plunger-and-barrel seal for hydraulic fuel injectors
    Patent number: 6543784
    Abstract: In a fuel injector having a plunger-and-barrel pumping assembly, a sealing member is mounted within an annulus of a plunger to prevent the dilution of pressurized fuel within the barrel of the tool. The sealing member includes a hollowed cavity which traps upward moving pressurized fuel and forces an extension or wiper of the sealing member upward and outward into sealing engagement with the inner surface or bore of the barrel.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 8, 2003
    Assignee: Caterpillar Inc
    Inventors: Mark A. Gasper, David M. Klingbeil
  • Wear compensating plunger-and-barrel seal for hydraulic fuel injectors
    Publication number: 20020074735
    Abstract: In a fuel injector having a plunger-and-barrel pumping assembly, a sealing member is mounted within an annulus of a plunger to prevent the dilution of pressurized fuel within the barrel of the tool. The sealing member includes a hollowed cavity which traps upward moving pressurized fuel and forces an extension or wiper of the sealing member upward and outward into sealing engagement with the inner surface or bore of the barrel.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Inventors: Mark A. Gasper, David M. Klingbeil