Patents by Inventor William G. Simpson

William G. Simpson 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).

  • Steel frame building system and truss assembly for use therein
    Patent number: 5577353
    Abstract: A steel building system, of the type having multiple frames, has at least one truss frame comprising a pair of column steel members, a bottom chord having at least one steel member, two top chord steel members, and at least one brace connected between the top chords and the bottom chord. Connecting plates are provided to connect the various steel members together. Such connecting plates have hole patterns which are juxtaposed with "standard" hole patterns near the ends of the steel members.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: November 26, 1996
    Inventor: William G. Simpson
  • Sprayable lightweight ablative coating
    Patent number: 5064868
    Abstract: An improved lightweight, ablative coating that may be spray applied and cured without the development of appreciable shrinkage cracks. The ablative mixture consists essentially of phenolic microballoons, hollow glass spheres, glass fibers, ground cork, a flexibilized resin binder, and an activated colloidal clay.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: November 12, 1991
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William G. Simpson, Max H. Sharpe, William E. Hill
  • Cork-resin ablative insulation for complex surfaces and method for applying the same
    Patent number: 4204899
    Abstract: Cork-resin ablative insulation material is prepared in a form suitable for application to complex curved surfaces by mixing finely divided cork with a B-stage curable thermosetting resin, forming the resulting mixture into a block, B-stage curing the resin-containing block and slicing the block into sheets. The B-stage cured sheet is shaped to conform to the surface being insulated, and further curing is then performed. Curing of the resin only to B-stage before shaping enables application of sheet material to complex curved surfaces and avoids limitations and disadvantages presented in handling of fully cured sheet material.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: May 27, 1980
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Hill M. Walker, Max H. Sharpe, William G. Simpson
  • Sprayable low density ablator and application process
    Patent number: 4077921
    Abstract: A sprayable, low density ablative composition consisting essentially of:A. 100 parts by weight of a mixture of 25-65% by weight of phenolic microballoons,0-20% by weight of glass microballoons,4-10% by weight of glass fibers,25-45% by weight of an epoxy-modified polyurethane resin,2-4% by weight of a bentonite dispersing aid and1-2% by weight of an alcohol activator for the bentonite;B. 1-10 parts by weight of an aromatic amine curing agent; andC. 200-400 parts by weight of a solvent.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: March 7, 1978
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Max H. Sharpe, William E. Hill, William G. Simpson, James M. Carter, Edwin L. Brown, Harry M. King, Paul H. Schuerer, David D. Webb
  • Mixing insert for foam dispensing apparatus
    Patent number: 3941355
    Abstract: A device for mixing foam ingredients. The device comprises an arrangement of lands situated about a cylindrical elongated shaft-like member with each land having a slot therein. The slots of alternate lands are positioned 180.degree. from each other so that as the ingredients flow through the mixing chamber it flows from adjacent one side of the housing to the other dividing as such passes around the shaft-like member.
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: March 2, 1976
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: William G. Simpson