Patents by Inventor Andreas Lederer

Andreas Lederer 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: 7909336
    Abstract: An arrangement of a shaft with a slip-ring seal mounted thereon is disclosed. The slip-ring seal (3) comprises a pair of cooperating slip rings (4,5), the sealing faces of which define a sealing gap (6) between them. One of the slip rings is mounted on the shaft (2) with torque transmission from a drive element (9) mounted on the shaft, whilst the other slip ring is provided for fixed mounting on a stationary component. The arrangement is characterised in that the drive element (9) comprises a tubular drive housing (11), extending over the external circumference of the slip ring (4) with a radial gap (12) and a passage (13) for introduction of a flow medium is provided, opening out at one end in a chamber (A), defined by the drive housing (11), which drains out through the radial gap (12), whereby the radial gap forms a flow path for the flow medium which terminates at or near the sealing gap (6).
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: March 22, 2011
    Assignee: EagleBurgmann Germany GmbH & Co. KG
    Inventors: Peter Feigl, Andreas Lederer, Clemens Simon
  • Publication number: 20080217862
    Abstract: An arrangement of a shaft with a slip-ring seal mounted thereon is disclosed. The slip-ring seal (3) comprises a pair of cooperating slip rings (4,5), the sealing faces of which define a sealing gap (6) between them. One of the slip rings is mounted on the shaft (2) with torque transmission from a drive element (9) mounted on the shaft, whilst the other slip ring is provided for fixed mounting on a stationary component. The arrangement is characterised in that the drive element (9) comprises a tubular drive housing (11), extending over the external circumference of the slip ring (4) with a radial gap (12) and a passage (13) for introduction of a flow medium is provided, opening out at one end in a chamber (A), defined by the drive housing (11), which drains out through the radial gap (12), whereby the radial gap forms a flow path for the flow medium which terminates at or near the sealing gap (6).
    Type: Application
    Filed: December 1, 2005
    Publication date: September 11, 2008
    Applicant: BURGMANN INDUSTRIES GMBH & CO. KG
    Inventors: Peter Feigl, Andreas Lederer, Clemens Simon