Patents by Inventor David P. Ward

David P. Ward 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: 8631828
    Abstract: A flow dividing manifold (12) divides a flow of anhydrous ammonia having both liquid and gas phases into separate flow paths. The manifold (12) has a first mixing nozzle (32) for concentrating the flow of the anhydrous ammonia in a first direction (46) against a first enclosed end (50) of a first mixing chamber (48). A second mixing nozzle (48) concentrating the flow of anhydrous ammonia in a second direction (76) orthogonal to the first direction (46) and against a second enclosed end (80) of a second mixing chamber (78). A flow divider structure (96) is disposed about an outward end of the second mixing chamber (78) and has a plurality of flow ports (90) which are angularly spaced around and extend orthogonal to the second flow direction (76) through the second mixing nozzle (64).
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: January 21, 2014
    Assignee: Continental NH3 Products Co., Inc.
    Inventor: David P. Ward
  • Patent number: 7975724
    Abstract: A hose bend bleeder is combined with first and second hoses, with the hose bend bleeder being located at the bottom of a bend in a flow path established by the hoses. The hose bend bleeder has a bleed screw and a downwardly facing exit passageway.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: July 12, 2011
    Inventor: David P. Ward
  • Patent number: 7913443
    Abstract: An audible fishing weight has a striker is constrained for reciprocating linear motion relative to at least one anvil face between upper and lower limits of the motion. The striker and anvil face are adapted and arranged to produce fish-attractive sound when the striker contacts the anvil face at the lower limit of the striker linear motion with respect to the anvil face.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: March 29, 2011
    Inventors: David P. Ward, Phillip C. Ward
  • Publication number: 20100319788
    Abstract: A separating liquid shut-off for an ammonia vapor transfer system has a centrifugal liquid-vapor separator and a float-actuated shut-off valve.
    Type: Application
    Filed: June 20, 2009
    Publication date: December 23, 2010
    Inventor: David P. Ward
  • Publication number: 20100319237
    Abstract: An audible fishing weight has a striker is constrained for reciprocating linear motion relative to at least one anvil face between upper and lower limits of the motion. The striker and anvil face are adapted and arranged to produce fish-attractive sound when the striker contacts the anvil face at the lower limit of the striker linear motion with respect to the anvil face.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Inventors: David P. Ward, Phillip C. Ward
  • Publication number: 20100319596
    Abstract: An ammonia distribution system has an ammonia meter, and a pre-cooler heat exchanger with a reservoir located upstream of the meter and a cooling tube downstream of the meter.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Inventor: David P. Ward
  • Publication number: 20100319794
    Abstract: A hose bend bleeder is combined with first and second hoses, with the hose bend bleeder being located at the bottom of a bend in a flow path established by the hoses. The hose bend bleeder has a bleed screw and a downwardly facing exit passageway.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Inventor: David P. Ward
  • Publication number: 20100300564
    Abstract: An ammonia distribution system has a source of a mixed stream of ammonia liquid and vapor, and a vapor stripper located upstream of dividing structure within an ammonia dividing manifold.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Inventor: David P. Ward
  • Patent number: 6556565
    Abstract: A quality of service (QOS) server gathers information in relation to transport introduced delays and obliterations of so called real-time protocol (RTP) signal streams which are used to packetize signals of synchronous signals origins, for example origins such as telephones and raster scan apparatus, for transport via the IP network. The QOS server is able to provide recently gathered QOS information about a requested call, apriori the actual call set up. In an example of a PBX call centre, an automatic dialler is coupled with a QOS server and in relation to endpoint and route selected data, determines if an IP telephony call should proceed, contingent upon the probable QOS being sufficient, before a call controller initiates a call set up.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: April 29, 2003
    Assignee: Nortel Networks Limited
    Inventors: David P. Ward, Cuthbert Cheung, John Marshall, Ian Astle
  • Patent number: 6123100
    Abstract: An ammonia excess flow valve has a seal ring (24) slidably positioned around at least two retainer vertical members (22B). A disk (26) has a disk central opening (26A) and a disk pin opening (26B) therethrough. The disk (26) is positioned adjacent to and below a retainer (22). A conduit (28) sealably connected to the disk (26) over the disk pin opening (26B) extends upwardly therefrom. The conduit (28) functions to permit the ammonia excess flow valve (10) to be reset by equalizing pressures on both sides of the disk (26) once excess flow that trips the ammonia excess flow valve (10) is remedied, minimizing creation of vapor.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: September 26, 2000
    Inventor: David P. Ward
  • Patent number: 5372160
    Abstract: A device receives a volatile fluid, then separates the vapor phase portion from the liquid phase portion in a separation chamber, and then provides separate paths from the separation chamber to a selective outlet ring across liquid and gas orifices for each outlet in the ring, where the divided gas and liquid are recombined, thereby enhancing the equal distribution of the fluid.
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: December 13, 1994
    Inventor: David P. Ward
  • Patent number: 5176162
    Abstract: A predetermined separation fitting for a fluid conduit includes a body and walls in the body defining a predetermined separation point. A force applied to the body above a predetermined value will cause the fitting to separate.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: January 5, 1993
    Inventors: James S. Jones, David P. Ward
  • Patent number: 5103852
    Abstract: A safety system for a pressurized transfer installation having piping between a storage tank and a flexible transfer hose, includes a shut off valve located in the piping, the shut off valve having selectable closed and open positions, and a cable for mechanically shifting the shut off valve to the closed position, the cable extending to a position remote from the flexible transfer hose.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: April 14, 1992
    Inventors: James S. Jones, David P. Ward
  • Patent number: 4900339
    Abstract: An apparatus for dividing the vapor and liquid components of a two-phased flow of anhydrous ammonia includes an upper chamber, a lower chamber and a partition member interposed between the upper and lower chambers. The partition member includes walls defining an aperture between the upper and lower chambers. At least one vapor outlet extends through the top of the upper chamber, at least one liquid outlet extends through the bottom of the lower chamber, and at least one two-phase inlet extends through the lower chamber disposed to admit two-phase flow in tangential relation to an internal surface of the lower chamber.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: February 13, 1990
    Inventors: David P. Ward, James S. Jones