Patents by Inventor Robin J. Forrest

Robin J. Forrest 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).

  • Method and apparatus for cleaning the interior surfaces of buildings, and especially ceilings of office buildings
    Patent number: 4919159
    Abstract: A method and apparatus for cleaning the interior surfaces of buildings, especially the ceilings of office buildings, involves producing a fine mist of cleaning liquid which is sprayed onto said surfaces. This fine mist is produced by pumping a cleaning liquid from a container by means of a pump which leads to a delivery tube and which produces a pressure of at least 300 psi, the liquid being atomized by a nozzle having a breadth less than 0.020 inches. The amount of liquid passing through the pump is more than 5 times the amount passing through the nozzle, and the remainder of this liquid is returned by a bypass line to the container.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: April 24, 1990
    Assignee: Ceiling Doctor International Inc.
    Inventors: Robin J. Forrest, Russell C. Ward