Patents Assigned to C.M.F. Corporation
  • Vertical alignment tool for underground installation
    Patent number: 5799405
    Abstract: An aligning tool, involving plumb bob usage, for a fully assembled underground elevator ram system is provided and makes it possible to align the elevator ram into a required vertical position. Further this allows the fully assembled elevator to be vertically installed at site in a hole which often is flooded by groundwater.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: September 1, 1998
    Assignee: C.M.F. Corporation
    Inventors: Jack V. Christensen, Erwin D. Kanne
  • Underground containment for fluid systems
    Patent number: 5577862
    Abstract: A potentially economically viable apparatus is provided for the containment and detection of underground leaking fluids by employing a wrapper, often in the form of a conduit, to enclose the underground portion of a hydraulic fluid system. An important application is the detection and containment associated with an underground elevator system using hydraulic oil.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: November 26, 1996
    Assignee: C.M.F. Corporation
    Inventors: Jack V. Christensen, Ronald T. Bloomstran