Patents by Inventor Darrell K. Terpstra

Darrell K. Terpstra 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).

  • Cleaning gun adjustable to blowing and suction functions
    Patent number: 5924166
    Abstract: The cleaning gun of this invention is equipped for connection to a source of compressed air under 80 psi, and with a directional dial that is mutually adjustable to cause a vacuum to draw in ambient air through an inlet/outlet tube as for removing oily dust and lint from machinery, and to cause air to be blown through the inlet/outlet tube under a maximum of 30 psi as for removing dry dust and lint from machinery and clothing.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: July 20, 1999
    Inventors: Christopher R. Jones, Darrell K. Terpstra