Patents by Inventor Douglas C. Wagstaff

Douglas C. Wagstaff 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).

  • Publication number: 20140261928
    Abstract: An energetic material comprises an energetic crystalline material substantially coated in an energetic plasticiser material. Advantageously the energetic material comprises from 90 to 99% by weight of an energetic crystalline material and from 1 to 10% by weight of an energetic plasticiser material comprising a plasticiser selected from the group comprising Butane Triol trinitrate (BTTN), Trimethylanol ethane trinitrate (TMETN), Diazidonitrazapentane (DANPE), Glycidyl Azide Polymer (Azide Derivative) (GAP Azide), Bis(2,2-dinitropropyl)acetal/bis(2,2-dinitropropyl)formal (BDNPA/F) or mixtures of two or more of these plasticisers. The inventors have found that the combination of just a small quantity of energetic plasticiser material to the energetic crystalline material prior to incorporation into the bulk plasticiser, binder and filler mixture of an explosive or propellant composition has unexpected and advantageous effects.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 18, 2014
    Applicant: BAE SYSTEMS LAND SYSTEMS (MUNITIONS & ORDNANCE) LIMITED
    Inventor: Douglas C. WAGSTAFF
  • Publication number: 20110108171
    Abstract: An energetic material comprises an energetic crystalline material substantially coated in an energetic plasticiser material. Advantageously the energetic material comprises from 90 to 99% by weight of an energetic crystalline material and from 1 to 10% by weight of an energetic plasticiser material comprising a plasticiser selected from the group comprising Butane Triol trinitrate (BUN), Trimethylanol ethane trinitrate (TMETN), Diazidonitrazapentane (DANPE), Glycidyl Azide Polymer (Azide Derivative) (GAP Azide), Bis(2,2-dinitropropyl)acetal/bis(2,2-dinitropropyl)formal (BDNPA/F) or mixtures of two or more of these plasticisers. The inventors have found that the combination of just a small quantity of energetic plasticiser material to the energetic crystalline material prior to incorporation into the bulk plasticiser, binder and filler mixture of an explosive or propellant composition has unexpected and advantageous effects.
    Type: Application
    Filed: September 20, 2010
    Publication date: May 12, 2011
    Applicant: BAE Systems Land Systems (Munitions & Ordnance) Limited
    Inventor: Douglas C. Wagstaff
  • Publication number: 20040221934
    Abstract: An energetic material comprises an energetic crystalline material substantially coated in an energetic plasticiser material.
    Type: Application
    Filed: February 21, 2002
    Publication date: November 11, 2004
    Applicant: Royal Ordnance PLC.
    Inventor: Douglas C. Wagstaff
  • Patent number: 5959235
    Abstract: A device for initiating burning of an explosive or propellant material subjected to external heating prior to detonation is described, the device comprising at least two materials, at least a first one of which materials melts at a temperature below the temperature at which detonation of said explosive or propellant material is induced and reacts with said second material to produce an exothermic reaction to cause initiation of burning in said explosive or propellant material.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: September 28, 1999
    Assignee: Royal Ordnance Public Limited Company
    Inventor: Douglas C. Wagstaff