Patents by Inventor David Koehler

David Koehler 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).

  • Patent number: 9206714
    Abstract: Control valve for a device, in particular for a hydraulic control device, for variably setting the control times of gas exchange valves in internal combustion engines, including a housing component, a control piston and a retaining ring, the control piston being movably mounted, loaded by a spring, on the one hand, and limited with the aid of the retaining ring, on the other hand, the retaining ring projecting over the control piston in the radial direction and being fixable in the axial direction in a recess in the housing component, and a control sleeve and a plastic shell surrounding the control sleeve being provided between the control piston and the housing component, and the retaining ring being axially attachable to the plastic shell in addition to being fixable to the housing component, and limiting the movement of the control piston and/or the control sleeve.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: December 8, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: David Koehler
  • Publication number: 20130312678
    Abstract: Control valve for a device, in particular for a hydraulic control device, for variably setting the control times of gas exchange valves in internal combustion engines, including a housing component, a control piston and a retaining ring, the control piston being movably mounted, loaded by a spring, on the one hand, and limited with the aid of the retaining ring, on the other hand, the retaining ring projecting over the control piston in the radial direction and being fixable in the axial direction in a recess in the housing component, and a control sleeve and a plastic shell surrounding the control sleeve being provided between the control piston and the housing component, and the retaining ring being axially attachable to the plastic shell in addition to being fixable to the housing component, and limiting the movement of the control piston and/or the control sleeve.
    Type: Application
    Filed: May 20, 2013
    Publication date: November 28, 2013
    Inventor: David KOEHLER
  • Publication number: 20070076048
    Abstract: A printhead is provided that includes a waste ink drip bib located adjacent to the lower edge of the printhead face and includes a funnel structure to direct the flow of waste ink to a centrally located lower opening.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: James Cunnington, David Koehler
  • Publication number: 20060221146
    Abstract: A fluid reservoir apparatus including a housing having input ports in a rear portion of the housing and output ports in a front portion of the housing, fluidic chambers and fluidic channels extending from the input ports to the output ports, a heater structure disposed in the housing, a plurality of datum standoffs having rounded datum ends disposed at the rear portion of the housing.
    Type: Application
    Filed: April 5, 2005
    Publication date: October 5, 2006
    Inventors: Steven Slotto, Brian Sonnichsen, Eric Segerstrom, David Koehler
  • Patent number: 6506806
    Abstract: A composition for reducing surface tension comprising from about 0.1% to about 0.5% by weight of a hydrocarbon surfactant and from 0.0001% to about 0.3% by weight of a fluorocarbon surfactant, provided that the hydrocarbon surfactant is present at less than or equal to 0.08% by weight when the fluorocarbon surfactant is present at greater than or equal to 0.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: January 14, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles Kenneth Taylor, Kai Volker Schubert, Richard David Koehler
  • Publication number: 20020014611
    Abstract: A composition for reducing surface tension comprising from about 0.1% to about 0.5% by weight of a hydrocarbon surfactant and from 0.0001% to about 0.3% by weight of a fluorocarbon surfactant, provided that the hydrocarbon surfactant is present at less than or equal to 0.08% by weight when the fluorocarbon surfactant is present at greater than or equal to 0.
    Type: Application
    Filed: May 15, 2001
    Publication date: February 7, 2002
    Inventors: Charles Kenneth Taylor, Kai Volker Schubert, Richard David Koehler