Patents by Inventor Stefan Kuder

Stefan Kuder 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: 8757632
    Abstract: The object of the invention is a sliding ring used in mechanical non-contact face seals. A sliding ring according to the invention is provided with grooves (1) on its faying face (5) which extend to the outer or to the inner peripheral surface, so that the faying face (s) has a recessed surface (Fv) and a non-recessed surface (F), whose relation Fv/F is included in the range from 0.25 to 0.50 and the grooves (1) situated on the recessed surface (Fv) are of the shape of a bell of an inclination angle (?) from 5° to 15° and an inclination angle (?) from 5° to 45°, while the relation of the base width (B) of the groove (1) to the top width (A) of the groove (1) is from 2 to 6, wherein all the grooves (1) are connected at their base (B) by a thin, ring-shaped groove (m) whose width against the height (Io) of the groove (1) falls into the range between 0.08 and 0.25.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: June 24, 2014
    Inventors: Roman Dobosz, Miroslaw Duzniak, Stefan Kuder, Jaroslaw Lasek, Jan Wawak
  • Publication number: 20100140878
    Abstract: The object of the invention is a sliding ring used in mechanical non-contact face seals. A sliding ring according to the invention is provided with grooves (1) on its faying face (5) which extend to the outer or to the inner peripheral surface, so that the faying face (s) has a recessed surface (Fv) and a non-recessed surface (F), whose relation Fv/F is included in the range from 0.25 to 0.50 and the grooves (1) situated on the recessed surface (Fv) are of the shape of a bell of an inclination angle (?) from 5° to 15° and an inclination angle (?) from 5° to 45°, while the relation of the base width (B) of the groove (1) to the top width (A) of the groove (1) is from 2 to 6, wherein all the grooves (1) are connected at their base (B) by a thin, ring-shaped groove (m) whose width against the height (Io) of the groove (1) falls into the range between 0.08 and 0.25.
    Type: Application
    Filed: November 8, 2004
    Publication date: June 10, 2010
    Applicant: ANGA USZCZELNIENIA MECHANICZNE SPOLKA A O.O
    Inventors: Roman Dobosz, Miroslaw Duzniak, Stefan Kuder, Jaroslaw Lasek, Jan Wawak
  • Patent number: 6575470
    Abstract: Non-contacting face seals having sliding rings with grooves formed in the lateral planes thereof. Each groove has inlet and outlet ends, with the traverse cross-section of the groove decreasing from the inlet end to the outlet end. The outlet end of the groove defines a recess of approximately 7 microns in the lateral plane. The bottom surface of the groove curves longitudinally and transversely, with a maximum curvature of about 4 microns. The lateral edges of the groove are of different lengths, so that one extends farther from the plane of the sliding rings than the other. The grooves have a variety of shapes, including spiral, double crossed spiral, and others. The seals help maintain high accuracy and dimensional repeatability of the grooves in the sliding rings for industrial and manufacturing applications.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: June 10, 2003
    Assignee: “ANGA” Uszczelnienia Mechanicznespokazoo
    Inventors: Antoni Gacek, Jan Wawak, Jaroslaw Lasek, Zbigniew Okrzeszowski, Stefan Kuder