Patents by Inventor Matthias Weihrauch

Matthias Weihrauch 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: 8083099
    Abstract: A method for producing a multicomponent compound involves pressing components out of cartridges by means of pistons. The method has particular applicability in connection with dental applications. The method prevents pressing the components initially under high pressures. At the beginning of the pressing-out process, a pressure lower than the characteristic pressing-out pressure of the components from the cartridges is employed. Feed speeds are adjusted to constant value as a function of the pressing-out behavior of the components which are compared with stored or calculated values for a known material.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: December 27, 2011
    Assignee: Ernst Muhlbauer GmbH & Co. KG
    Inventors: Sven Meyer, Hans-Dieter Höhnk, Matthias Weihrauch
  • Patent number: 7972057
    Abstract: A device for producing a multi-component compound, in particular for dental purposes, by mixing its components after they have been pressed out of cartridges which open into a dynamic mixer and are arranged exchangeably in the device, with a first motor for advancing all of the pistons assigned to the cartridges, and with a second motor for rotary driving of mixing elements in the mixer via a shaft, which is held in engagement with the mixer by spring pretensioning and can be pulled back from the mixer counter to the spring pretensioning, is characterized in that the shaft is provided with a radially extending projection which, by the spring pretensioning, is pressed onto a ramp-like upwardly sloping cam surface, which is provided on its foot with an abutment surface, of a toothed wheel, which is provided with saw-like teeth and is coaxial to the shaft, which toothed wheel, in a first angle direction in which the cam surface slopes upwards, is prevented from rotating by a catch and, in the second angle positi
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: July 5, 2011
    Assignee: Ernst Muhlbauer GmbH & Co. KG
    Inventors: Sven Meyer, Matthias Weihrauch, Jürgen Wallbott
  • Publication number: 20100091607
    Abstract: A device for producing a multi-component compound, in particular for dental purposes, by mixing its components after they have been pressed out of cartridges which open into a dynamic mixer and are arranged exchangeably in the device, with a first motor for advancing all of the pistons assigned to the cartridges, and with a second motor for rotary driving of mixing elements in the mixer via a shaft, which is held in engagement with the mixer by spring pretensioning and can be pulled back from the mixer counter to the spring pretensioning, is characterized in that the shaft is provided with a radially extending projection which, by means of the spring pretensioning, is pressed onto a ramp-like upwardly sloping cam surface, which is provided on its foot with an abutment surface, of a toothed wheel, which is provided with saw-like teeth and is coaxial to the shaft, which toothed wheel, in a first angle direction in which the cam surface slopes upwards, is prevented from rotating by a catch and, in the second ang
    Type: Application
    Filed: July 18, 2007
    Publication date: April 15, 2010
    Inventors: Sven Meyer, Matthias Weihrauch, Jürgen Wallbott
  • Publication number: 20090266839
    Abstract: The method and the device for producing a multicomponent compound, in particular for dental purposes, is characterized in that the drives of the pistons of cartridges are initially moved with a higher speed until air pockets in the cartridges are eliminated and said cartridges are filled only with the component, and in that the feed speed is then reduced to constant values with which the components can be pressed out.
    Type: Application
    Filed: June 14, 2006
    Publication date: October 29, 2009
    Inventors: Sven Meyer, Matthias Weihrauch
  • Publication number: 20090145921
    Abstract: The method and the device for producing a multicomponent compound, in particular for dental purposes, is characterized in that the pressing-out process, at the beginning thereof, is carried out at a reduced pressure.
    Type: Application
    Filed: June 14, 2006
    Publication date: June 11, 2009
    Inventors: Sven Meyer, Hans-Dieter Hohnk, Matthias Weihrauch