Patents Assigned to Lois I. Oaden
  • Technique for placing tensile elements in conduits
    Patent number: 4083533
    Abstract: There is disclosed a resilient spherical piston attached to an elongate tensile element. Compressed air is used to propel the piston through a conduit and thereby place the tensile element therein. The tensile element is connected to the resilient sphere in such a manner that the sphere elongates and decreases in diameter when the piston becomes stuck in the conduit and the tensile element is pulled.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: April 11, 1978
    Assignee: Lois I. Oaden
    Inventor: Willie Carl Schwabe