Patents by Inventor Richard J. Schafer

Richard J. Schafer 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).

  • Stepping staff
    Patent number: 4899452
    Abstract: A stepping staff is disclosed which comprises a plurality of sections coupled together in telescoping manner. A sighting target is arranged on the uppermost section. The sections have a plurality of sets of detents with which collars are engaged. The collars enable the sections to be rotated relative to one another to bring a corresponding set of detents on the sections into alignment with one another. The collars have engaging members which locate in detents in the set of detents and enable the sections to be moved relative to one another and to the section by an integral number of distances corresponding to the spacing of the detents in the set of detents by locating the engaging members in appropriate detents in the set of detents.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: February 13, 1990
    Inventor: Richard J. Schafer
  • Spray device
    Patent number: 4783007
    Abstract: A spray device is shown which has an inlet 14, a spray chamber 20 and a spray plate 16. The spray plate 16 has a plurality of apertures 18 and the chamber 20 accommodates a plurality of bodies 22 to disrupt the flow of water from the apertures 18 to provide a continuing changing spray pattern.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: November 8, 1988
    Inventor: Richard J. Schafer