Patents by Inventor Lewellyn Boyce Colbourne

Lewellyn Boyce Colbourne 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).

  • Wall raising apparatus
    Patent number: 5833430
    Abstract: On construction sites, the apparatus provides a mast, and a cable-operated winch, for pivot-lifting horizontally-manufactured wall-frames to the vertical position. Upper and lower section of 2".times.6" lumber form the length of the mast. Top and bottom mast-elements have hollow-box sockets, into which the lengths of lumber are telescoped, and a middle mast-element receives both upper and lower lumber sections. The middle mast-element carries a winch, the cable of which is hooked to the top rail of the wall-frame.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: November 10, 1998
    Assignee: Douglas Reynolds
    Inventors: Douglas Bradley Reynolds, Lewellyn Boyce Colbourne