Patents by Inventor William Anthony Denne

William Anthony Denne 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).

  • Pulse jet engines
    Patent number: 8402745
    Abstract: A pulse jet engine comprising a quarter wave gas resonator (1) which is arranged to cycle at an ultrasonic frequency, wherein the resonator (1) is closed, or substantially closed, to gas flow at the pressure antinode (4) thereof. The shape and dimensions of the quarter wave gas resonator (1) at least partially determine the ultrasonic frequency at which the resonator (1) cycles.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: March 26, 2013
    Inventor: William Anthony Denne
  • Pulse Jet Engines
    Publication number: 20080209884
    Abstract: A pulse jet engine comprising a quarter wave gas resonator (1) which is arranged to cycle at an ultrasonic frequency, wherein the resonator (1) is closed, or substantially closed, to gas flow at the pressure antinode (4) thereof. The shape and dimensions of the quarter wave gas resonator (1) at least partially determine the ultrasonic frequency at which the resonator (1) cycles.
    Type: Application
    Filed: May 3, 2005
    Publication date: September 4, 2008
    Inventor: William Anthony Denne
  • Zirconia based blades and foils for razors and a method for producing same
    Patent number: 7357052
    Abstract: Stabilized or partially stabilized zirconia paste may be screen printed onto hydrophilic plastic film in the form of a mesh. On firing, this becomes a very sharp foil for electric razors with excellent wear and flexibility characteristics. Stabilized or partially stabilized zirconia may also be screen printed onto a wettable plastic film then fired to produce low cost razor blades with an excellent edge. A curved razor blade incorporating an array of holes, each of which has a knife edge periphery, offers greater cutting power and control of the skin surface than a single or double edge.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: April 15, 2008
    Assignee: Eveready Battery Company, Inc.
    Inventor: William Anthony Denne
  • Liquid collection
    Patent number: 6203150
    Abstract: A liquid collection apparatus comprises a liquid collecting device and liquid conduit for transferring liquid from the liquid collection device. Porous liquid absorption device is positioned between the liquid collection device and the liquid conduit. Pump device pumps liquid from the liquid conduit, the pump device generating a pressure in the conduit that is sufficient to draw liquid through the liquid collection device but is insufficient to draw a gas/liquid surface through the liquid absorption device.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: March 20, 2001
    Assignee: Domino Printing Sciences Plc
    Inventors: Jerzy Marcin Zaba, William Anthony Denne, Richard Frank Mitchell
  • Ink jet nozzle/valve, pen and printer
    Patent number: 5650806
    Abstract: An ink jet printer or a pen has a nozzle or valve (4) formed by an orifice in an elastic material (1), and the orifice comprising a slit or hole (9) in the elastic material deformable to cause the slit or hole to open or close to eject ink (2) under pressure. The printer preferably has plural, closely spaced nozzles and actuators in the form of a piezoelectric unimorph (10).
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: July 22, 1997
    Assignee: Domino Printing Sciences PLC
    Inventor: William Anthony Denne