Patents by Inventor Shirley A. Keyser

Shirley A. Keyser 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: 4283068
    Abstract: A sled structure including a body supporting portion, a head supporting portion and a towing portion; the body supporting portion and the head supporting portion together forming a substantially flat flexible sheet-like structure, the body supporting portion being of a generally elongated configuration, the body supporting portion including a main section with peripheral side sections and an end section, the side and end sections being foldable with respect to the main section, a plurality of fasteners disposed in the side and end sections, the head supporting portion extending from one end of the body supporting portion, spaced first and second tubular passages extending from one edge of the sled structure to the other, continuous cord extending from a fastener adjacent one corner of the end section to a fastener located in the side section remote from the corner and thereafter to a fastener disposed in the other side section and back and forth between fasteners in the side sections in a zigzag pattern to th
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: August 11, 1981
    Inventor: Shirley A. Keyser