Patents by Inventor Kurt Grorich

Kurt Grorich 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).

  • Self-lubricating seal
    Patent number: 3973781
    Abstract: A seal or packing engages a rotary machine part, e.g. a shaft, to be sealed off. Lubricant is drawn into the extended sealing area between the seal and the machine part and retained therebetween as a packing fluid, when the machine part rotates, regardless of the direction of rotation. Two or more sealing rings in tandem can be used as a self-lubricating packing ring or slide bearing.
    Type: Grant
    Filed: May 21, 1973
    Date of Patent: August 10, 1976
    Assignee: VEB Gummikombinat Berlin
    Inventor: Kurt Grorich