Patents by Inventor Berthold Krämer

Berthold Krämer 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: 7481754
    Abstract: A roll has a roll body having a central bore and a first end and a second end. Roll necks are flange-mounted to the first and second ends of the roll body, respectively, for supporting the roll body in bearings. At least one compensation weight is eccentrically arranged in the central bore. The at least one compensation weight is adjustable with regard to its mass, an angular position within the roll body, and/or a radial spacing relative to a central axis of the roll body. The at least one compensation weight is adjustable while the roll necks are flange-mounted on the first and second ends.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: January 27, 2009
    Assignee: Walzen Irle GmbH
    Inventors: Jürgen Krüger, Wolfgang Wiertz, Klaus-Peter Schramm, Berthold Krämer, Ludwig Hellenthal
  • Patent number: 7174949
    Abstract: The invention relates to a calender bowl which can be heated by means of a heating medium that is in a liquid or gaseous state of matter. The calender bowl comprises a roll body (1) that is provided with peripheral bores (4) and flange journals (2, 3) comprising supply and discharge conduits for the heating medium. Thermal insulating bushes (8) are mounted on the end areas of the peripheral bores. The heating medium flows through the peripheral bores. The aim of the invention is to adapt the heat transfer from said bores to the lateral surface of the roll body to the respective heat requirements in such a way that the harmful measured differences stay within limits so that the product is not impaired. To this end, adjusting devices are allocated to the flange journals for controllably turning and/or axially displacing the insulating bushes.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: February 13, 2007
    Assignee: Walzen Irle GmbH
    Inventors: Ludwig Hellenthal, Berthold Krämer, Wolfgang Krönert, Walter Patt, Joachim Schönemann, Klaus-Peter Schramm, Jaxa von Schweinichen
  • Patent number: 6518530
    Abstract: A current-limiting contact arrangement includes a conductor rail including a stationary contact and including two current loops extending at opposite sides of the conductor rail in respective planes parallel to a center plane of the contact arrangement. A contact arm including a movable contact which can be brought into and out of contact with the stationary contact is provided, the current loops extending in respective planes parallel to a center plane of the contact arrangement and along an entire opening travel of the movable contact. An arc control device including arc splitters and a cassette including a first part and a second part and an insulating material are also provided. The arc splitters are disposed in a positive-locking manner in an interior of the cassette, the contact arm and a part of the conductor rail including the stationary contact extending into the interior of the cassette, and the current loops being disposed in a positive-locking manner at outer walls of the cassette.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: February 11, 2003
    Assignee: Moeller GmbH
    Inventors: Volker Heins, Axel Wendenius, Stefan Michel, Klaus Ochtinger, Berthold Kraemer
  • Publication number: 20020056705
    Abstract: A current-limiting contact arrangement includes a conductor rail including a stationary contact and including two current loops extending at opposite sides of the conductor rail in respective planes parallel to a center plane of the contact arrangement. A contact arm including a movable contact which can be brought into and out of contact with the stationary contact is provided, the current loops extending in respective planes parallel to a center plane of the contact arrangement and along an entire opening travel of the movable contact. An arc control device including arc splitters and a cassette including a first part and a second part and an insulating material are also provided. The arc splitters are disposed in a positive-locking manner in an interior of the cassette, the contact arm and a part of the conductor rail including the stationary contact extending into the interior of the cassette, and the current loops being disposed in a positive-locking manner at outer walls of the cassette.
    Type: Application
    Filed: July 24, 2001
    Publication date: May 16, 2002
    Inventors: Volker Heins, Axel Wendenius, Stefan Michel, Klaus Ochtinger, Berthold Kraemer