Patents Assigned to VEB Gummikombinat Berlin
  • 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