Patents by Inventor John A. Cranston

John A. Cranston 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: 8839686
    Abstract: An apparatus for testing an implement having an elongate shaft with a head end and a grip end, with a head attached to the head end. The apparatus may include a wind tunnel with a test cell adapted to receive the head of the implement and permit a range of unrestricted movement of the head within the test cell. The test cell includes an inlet and outlet for air flow and a portal or opening in a wall of the cell to which an elongate conduit is attached. The conduit extends in a direction substantially normal, or radial, to the direction of airflow. The conduit is adapted to receive the shaft of the implement, with the grip end of the implement extending beyond the far end of the conduit and into a clamp. The clamp is adapted to hold the grip end of the shaft in a fixed position.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: September 23, 2014
    Inventors: Jeffrey L. Lindner, Greg Laue, John Cranston
  • Patent number: 6521296
    Abstract: A novel materials technology has been developed and demonstrated for providing a high modulus composite material for use to 1000° F. and above. This material can be produced at 5-20% of the cost of refractory materials, and has higher structural properties. This technology successfully resolves the problem of “thermal shock” or “ply lift,” which limits traditional high temperature laminates (such as graphite/polyimide and graphite/phenolic) to temperatures of 550-650° F. in thicker (0.25″ and above) laminates. The technology disclosed herein is an enabling technology for the nose for the External Tank (ET) of the Space Shuttle, and has been shown to be capable of withstanding the severe environments encountered by the nose cone through wind tunnel testing, high temperature subcomponent testing, and full scale structural, dynamic, acoustic, and damage tolerance testing.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: February 18, 2003
    Assignee: Lockheed Martin Corporation
    Inventors: Ellis C. Seal, Robert William Biggs, Jr., Venu Prasad Bodepudi, John A. Cranston
  • Patent number: 6013361
    Abstract: A novel materials technology has been developed and demonstrated for providing a high modulus composite material for use to 1000.degree. F. and above. This material can be produced at 5-20% of the cost of refractory materials, and has higher structural properties. This technology successfully resolves the problem of "thermal shock" or "ply lift," which limits traditional high temperature laminates (such as graphite/polyimide and graphite/phenolic) to temperatures of 550-650.degree. F. in thicker (0.25" and above) laminates. The technology disclosed herein is an enabling technology for the nose for the External Tank (ET) of the Space Shuttle, and has been shown to be capable of withstanding the severe environments encountered by the nose cone through wind tunnel testing, high temperature subcomponent testing, and full scale structural, dynamic, acoustic, and damage tolerance testing.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: January 11, 2000
    Assignee: Lockheed Martin Corporation
    Inventors: Ellis C. Seal, Robert William Biggs, Jr., Venu Prasad Bodepudi, John A. Cranston
  • Patent number: 5380768
    Abstract: This invention relates to a foam, a foam-resin composite and a method of making foam-resin composites. The foam set forth in this invention comprises a urethane modified polyisocyanurate derived from an aromatic amino polyol and a polyether polyol. In addition to the polyisocyanurate foam, the composite of this invention further contains a resin layer, wherein the resin may be epoxy, bismaleimide, or phenolic resin. Such resins generally require cure or post-cure temperatures of at least 350.degree. F.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: January 10, 1995
    Assignee: Martin Marietta Corporation
    Inventors: John A. Cranston, Doug E. MacArthur