Patents by Inventor David B Cameron

David B Cameron 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).

  • Patent number: 4751753
    Abstract: A portable toilet enclosure comprises a base and sidewalls attached to sides of the base. The base has a wall in which a portable toilet is disposed. A moveable wall is supported on the sidewalls and is operable to a closed position in which the portable toilet is concealed from view and to an open position which provides use of the portable toilet in the usual manner. The sidewalls incorporate integral hand grips along the top. The bottom edges of the sidewalls provide support for the enclosure on an underlying surface. A pair of wheels are mounted at the lower front corners of the enclosure. With the toilet resting on its sidewalls, the wheels are slightly out of contact with the underlying surface. Forward tipping of the enclosure brings the wheels into contact with the underlying surface while at the same time elevating the lower edges of the sidewalls from the underlying surface so that the enclosure can be rolled.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: June 21, 1988
    Assignee: Thetford Corporation
    Inventors: Charles L. Sargent, John R. Selina, David B. Cameron