Patents by Inventor Norman P. Butcher

Norman P. Butcher 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).

  • Tube coupling for vacuum cleaners
    Patent number: 4114927
    Abstract: A wand assembly for a vacuum cleaner comprised of a pair of tubes, one of which is adapted to be telescopically fit into the other. The tubes are held together by a button resiliently biased to extend through alignable holes in the tubes. The resilient biasing of the button is provided by a spring within the inner tube and affixed to the inner walls of the inner tube at a pair of positions longitudinally spaced on opposite sides of the hole through which the button extends.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: September 19, 1978
    Inventor: Norman P. Butcher