Patents by Inventor Walter Wirtz

Walter Wirtz 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: 6662914
    Abstract: A hydraulic dashpot with a cylinder (1) full of shock-absorbing fluid, with a piston (3) mounted on the end of piston rod (2), traveling back and forth inside the cylinder, separating the cylinder into two compartments (4 & 5), and provided with ports and shock-absorption valves, and with a variable bypass system accommodated in an axial bore (13) in the piston rod provided with lateral radial openings (11 & 26) extending through the rod. The object is to allow fixed independent establishment of the cross-section of the bypass system available for the fluid to flow through as the piston rod travels in the direction associated with the suction phase and of the cross-section of the bypass system available for the fluid to flow through as the piston rod travels in the direction associated with the compression phase.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: December 16, 2003
    Assignee: Krupp Bilstein GmbH
    Inventors: Michael Hönig, Walter Wirtz, Marcello Di Fina
  • Publication number: 20030146060
    Abstract: A resilient leg as part of an attachment for the wheel of a motor vehicle. The leg is provided with a piston rod (4) that has a piston (5) attached to it, that travels into and out of a housing (1), that is attached at its outer end to the vehicle's chassis, and that is maintained in radial alignment by two separated bearings. The piston divides the interior of the housing into two fluid-charged chambers (9 & 10). The object is to ensure satisfactory transmission of moments of force from the piston rod to the housing in a leg that is light in weight. The piston rod accordingly extends through, and is maintained in radial alignment at, both ends of the leg.
    Type: Application
    Filed: February 3, 2003
    Publication date: August 7, 2003
    Inventors: Michael Honig, Walter Wirtz, Marcello Di Fina, Klaus Hofmann, Gunter Poetsch
  • Publication number: 20030057042
    Abstract: A hydraulic dashpot with a cylinder (1) full of shock-absorbing fluid, with a piston (3) mounted on the end of piston rod (2), traveling back and forth inside the cylinder, separating the cylinder into two compartments (4 & 5), and provided with ports and shock-absorption valves, and with a variable bypass system accommodated in an axial bore (13) in the piston rod provided with lateral radial openings (11 & 26) extending through the rod. The object is to allow fixed independent establishment of the cross-section of the bypass system available for the fluid to flow through as the piston rod travels in the direction associated with the suction phase and of the cross-section of the bypass system available for the fluid to flow through as the piston rod travels in the direction associated with the compression phase.
    Type: Application
    Filed: August 2, 2002
    Publication date: March 27, 2003
    Inventors: Michael Honig, Walter Wirtz, Marcello Di Fina
  • Patent number: 4622340
    Abstract: This invention relates to compounds of the formula ##STR1## Z' is chlorine or fluorine, with the proviso that Z' is chlorine when Q is the moiety of Formula III. The invention also relates to the preparation of the compounds, their use in controlling animal pests in plant protection, and pesticidal agents comprising the compounds as active ingredients.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: November 11, 1986
    Assignee: Celamerck GmbH & Co., KG
    Inventors: Heinz-Manfred Becher, Ricarda Prokic-Immel, Walter Wirtz
  • Patent number: 4457943
    Abstract: This invention relates to compounds of the formula ##STR1## wherein ##STR2## X is oxygen or sulfur; Y is chlorine or fluorine; andZ is hydrogen, chlorine, or fluorine,as well as to the preparation thereof, their use in controlling animal pests in plant protection, and pesticidal agents comprising the compounds of Formula I as active ingredients.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: July 3, 1984
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz-Manfred Becher, Ricarda Prokic-Immel, Walter Wirtz
  • Patent number: 4275077
    Abstract: This invention is directed to novel urea derivatives of the general formula ##STR1## wherein A represents one of the groups ##STR2## X and Y, which may be identical to or different from each other, each represent hydrogen, chlorine or bromine;Z represents hydrogen or chlorine;Z' represents chlorine or fluorine; andZ" represents hydrogen, chlorine, or fluorine.The invention is also directed to the production of compounds of Formula I, their use as pesticides, and pesticidal agents comprising the novel compounds as active substances.
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: June 23, 1981
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz-Manfred Becher, Richard Sehring, Walter Wirtz, Ricarda Prokic-Immel