Patents by Inventor Harvey C. Robertson

Harvey C. Robertson 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: 5620185
    Abstract: A disk game that can be easily carried to different locations and played both on land and in water is disclosed. The game uses a mat of closed cell foam having fastening elements thereon to provide for the quick set up of the targets, also having fastening elements thereon, in the proper position. The game is sold in a container that is element proof and also useable for carrying the game from one place to another, i.e., the container is not destroyed when the product is taken out of the container. Also disclosed is a flying article for use with the disk game. The flying article is modified so that it has both floating ability and improved aerial stability.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: April 15, 1997
    Inventor: Harvey C. Robertson
  • Patent number: 4759163
    Abstract: In a roof drain assembly comprising an existing roof structure having an opening therethrough with a drainage duct extending downwardly through the opening, and a re-roofing structure which includes a layer of insulation and which is disposed over the existing roof structure with an opening through the re-roofing structure in alignment with the opening through the existing roof structure, a drain extension pipe extends through the opening in the re-roofing structure and into the upper end portion of the drainage duct. The portion of the drain extension pipe within the drainage duct is of a non-resiliently deformable material such as lead, and this non-resiliently deformable portion of the drain extension pipe is outwardly mechanically deformed against the drainage duct to provide a substantially water-tight seal therebetween.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: July 26, 1988
    Inventors: Robert W. Mason, Harvey C. Robertson