Patents Assigned to Hi-Tec, Inc.
  • Rotary coupling
    Patent number: 4449739
    Abstract: A rotary coupling for conducting high pressure liquid from a stationary source to a rotatable utilization device is disclosed. The coupling includes a hollow shaft, a mounting assembly having a cavity into which one end of the shaft extends and roller bearings for enabling rotation and preventing axial movement of the shaft, a packing surrounding the shaft in the cavity and resiliently compressed therearound, and a conduit for conducting high pressure fluid from the source to the cavity.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: May 22, 1984
    Assignee: Hi-Tec, Inc.
    Inventor: Roger Raether