Patents by Inventor Edna M. Grove

Edna M. Grove 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).

  • Rocket motors having controlled autoignition propellant systems
    Patent number: 9784545
    Abstract: Solid propellant systems include a main propellant and a secondary propellant in contact with the first propellant that exhibits autoignition temperatures of at least about 100° F. lower than the autoignition temperature of the main propellant. The secondary propellant of the present invention is most advantageously employed with conventional AP-containing solid propellant formulations as the main propellant, especially formulations containing both AP, an energetic solid, and a binder. In especially preferred forms, the secondary propellant will include a nitramine which is at least one selected from nitroguanidine (NQ), cyclotrimethylene trinitramine (RDX) and cyclotetramethylenetetranitramine (HMX), and a binder which is at least one selected from HTPB, HTPE or glycidyl azide polymer (GAP). Most preferably, the secondary propellant will include a combination of nitramines which includes NQ and one of RDX or HMX.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: October 10, 2017
    Assignee: AEROJET-GENERAL CORPORATION
    Inventors: Kenneth J. Graham, Edna M. Grove, Robert D. Lynch, Guy B. Spear
  • Controlled autoignition propellant systems
    Patent number: 9759162
    Abstract: Solid propellant systems include a main propellant and a secondary propellant in contact with the first propellant that exhibits autoignition temperatures of at least about 100° F. lower than the autoignition temperature of the main propellant. The secondary propellant of the present invention is most advantageously employed with conventional AP-containing solid propellant formulations as the main propellant, especially formulations containing both AP, an energetic solid, and a binder. In especially preferred forms, the secondary propellant will include a nitramine which is at least one selected from nitroguanidine (NQ), cyclotrimethylene trinitramine (RDX) and cyclotetramethylenetetranitramine (HMX), and a binder which is at least one selected from HTPB, HTPE or glycidyl azide polymer (GAP). Most preferably, the secondary propellant will include a combination of nitramines which includes NQ and one of RDX or HMX.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: September 12, 2017
    Assignee: AEROJET-GENERAL CORPORATION
    Inventors: Kenneth J. Graham, Edna M. Grove, Robert D. Lynch, Guy B. Spear