Patents by Inventor Dean Mark Bowden

Dean Mark Bowden 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).

  • Preset quantity fluid delivery apparatus
    Patent number: 6006953
    Abstract: Apparatus for delivering constant quantities of fluid, comprises a chamber, a piston (6) reciprocally movably within the chamber, a fluid inlet (3) to the chamber on one side of the piston, and a fluid outlet (5) from the chamber on the other side of the piston (6). A valve (12) through the outlet side of the chamber to the fluid outlet (5). Spring means (10) urges the piston (6) and subsidiary spring means (16) urges the valve (12) through the piston (6) towards the inlet side of the chamber, such that fluid pressure on the inlet side of the chamber will cause the piston (6) to move to eject a predetermined quantity of fluid from the outlet side, and on the return stroke fluid will flow through the valve (12) in the piston (6) to refill the outlet side for the subsequent piston delivery stroke.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: December 28, 1999
    Inventors: Richard John Newson, Dean Mark Bowden