Patents by Inventor Martin Kirchhof

Martin Kirchhof 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).

  • Mechanical face seal with a rotating counter ring and precisely defined clamping
    Patent number: 9759331
    Abstract: A mechanical face seal includes a rotating counter ring having a sealing surface and two radial planes. Each of the radial planes is associated with a clamping cam. A stationary face seal ring has a sealing surface opposite from the sealing surface of the counter ring. The sealing surfaces of the counter ring and the face seal ring bear against each other.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 12, 2017
    Assignee: CARL FREUDENBERG KG
    Inventors: Martin Kirchhof, Armin Laxander, Guenther Lederer, Thomas Keller
  • Mechanical face seal
    Patent number: 9086152
    Abstract: A mechanical face seal includes a rotating counter ring having a sealing surface and a stationary face seal ring having a sealing surface. The sealing surface of the counter ring is disposed opposite from the sealing surface of the face seal ring. The sealing surfaces of the counter ring and the face seal ring bear against each other.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: July 21, 2015
    Assignee: CARL FREUDENBERG KG
    Inventors: Martin Kirchhof, Armin Laxander, Guenther Lederer, Thomas Keller
  • MECHANICAL FACE SEAL WITH A ROTATING COUNTER RING AND PRECISELY DEFINED CLAMPING
    Publication number: 20130038023
    Abstract: A mechanical face seal includes a rotating counter ring having a sealing surface and two radial planes. Each of the radial planes is associated with a clamping cam. A stationary face seal ring has a sealing surface opposite from the sealing surface of the counter ring. The sealing surfaces. of the counter ring and the face seal ring bear against each other.
    Type: Application
    Filed: April 18, 2011
    Publication date: February 14, 2013
    Applicant: CARL FREUDENBERG KG
    Inventors: Martin Kirchhof, Armin Laxander, Guenther Lederer, Thomas Keller
  • SLIDE RING SEAL
    Publication number: 20130038024
    Abstract: A mechanical face seal includes a rotating counter ring having a sealing surface and a stationary face seal ring having a sealing surface. The sealing surface of the counter ring is disposed opposite from the sealing surface of the face seal ring. The sealing surfaces of the counter ring and the face seal ring bear against each other.
    Type: Application
    Filed: April 18, 2011
    Publication date: February 14, 2013
    Applicant: Carl Freudenberg KG
    Inventors: Martin Kirchhof, Armin Laxander, Guenther Lederer, Thomas Keller
  • SEAL RING OF A MECHANICAL SEAL ASSEMBLY
    Publication number: 20100259011
    Abstract: The invention relates to a seal ring of a mechanical seal assembly, comprising a base body made of a material including at least one carbide material and a coating provided at the base body and creating a sliding surface, said coating consisting of a diamond material. The inventions is characterized in that the base body is formed of a two-component material by embedding particulate regions made of a diamond material compatible with the diamond material of the coating into the material comprising at least one carbide.
    Type: Application
    Filed: October 22, 2008
    Publication date: October 14, 2010
    Inventors: Joachim Otschik, Andreas Schrüfer, Rudolf Schicktanz, Martin Kirchhof