Patents by Inventor Gunther Hacker

Gunther Hacker 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: 6860486
    Abstract: A shaft sealing ring for a shaft comprises a sealing lip made of an elastomeric material or a PTFE compound and dimensioned as to be flaccidly bendable. The flexural elasticity is selected such that it will just be sufficient to press a sealing portion of the sealing lip into sealing engagement with the periphery of the shaft. The sealing portion of the sealing lip engages the periphery for a predetermined length. In the sealing portion, the sealing lip is provided along its circumference, at the side of the shaft, with endless, undulating return channels at least throughout this length. These channels return any medium escaping during rotation of the shaft to the space to be sealed. The return channels do not communicate with the surroundings of the shaft sealing ring. No seperate contact pressure means, such as a helical ring coil spring is required to press the sealing lip into engagement with the shaft.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: March 1, 2005
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Gunther Hacker, Rolf Johnen, Wolfgang Schmitt
  • Publication number: 20030085527
    Abstract: A shaft sealing ring for a shaft comprises a sealing lip made of an elastomeric material or a PTFE compound and dimensioned so as to be flaccidly bendable. The flexural elasticity is selected such that it will just be sufficient to press a sealing portion of the sealing lip into sealing engagement with the periphery of the shaft. The sealing portion of the sealing lip engages the periphery for a predetermined length. In the sealing portion, the sealing lip is provided along its circumference, at the side of the shaft, with endless, undulating return channels at least throughout this length. These channels return any medium escaping during rotation of the shaft to the space to be sealed. The return channels do not communicate with the surroundings of the shaft sealing ring. No separate contact pressure means, such as a helical ring coil spring is required to press the sealing lip into engagement with the shaft.
    Type: Application
    Filed: November 5, 2002
    Publication date: May 8, 2003
    Inventors: Gunther Hacker, Rolf Johnen, Wolfgang Schmitt