Patents by Inventor Gary H. Greenhoe

Gary H. Greenhoe 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: 5686678
    Abstract: A rotary valve for a musical instrument includes a cylindrical casing having a sidewall closed at opposite ends thereof, and a rotor mounted within the casing for rotation between unoperated position, in which the main tubing is connected to a further tubing portion, and an operated position, in which a length of extension tubing is connected into the air passageway through the instrument, the rotor including a hollow shell member and rotor primary and secondary airway tubes mounted within the rotor shell member for selectively communicating input and output ports of the valve as the rotor is rotated between its unoperated and operated positions, and a plurality of vent openings in the cylindrical sidewall of the rotor shell member for providing pressure relief areas for air directed into the rotor during rotation of the rotor between its unoperated and operated positions.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: November 11, 1997
    Inventor: Gary H. Greenhoe