Patents by Inventor Guy M. Phillipps

Guy M. Phillipps 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).

  • Cover height adjuster
    Patent number: 5360131
    Abstract: A cover height adjuster which can be used for a boundary box, a manhole cover, etc. in a paved location having two rings with interengaging sloping castellated end surfaces extending around the peripheries of at least three sectors of the rings and can vary the height of the upper ring upon its rotation over the lower ring. The upper surface of the upper ring may have a slope which engages a sloping surface of a cover assembly, so that relative rotation can also vary the slope of the cover.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: November 1, 1994
    Assignee: Philmac Pty. Ltd.
    Inventors: Guy M. Phillipps, Wayne A. Harris