Patents by Inventor Randy L. Crane

Randy L. Crane 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).

  • Apparatus for forming hollow structures from powdered thermoplastic materials
    Patent number: 4934917
    Abstract: A process is disclosed for forming a thermoplastic structure on the exterior surface of the heated mold form. A mold is heated to approximately two times the melting temperature of a thermoplastic material and particulate thermoplastic material then sprinkled onto the exterior surface of the heated mold. An adhesively bondable material may then be added to the semi-molten thermoplastic material structure. The mold is then cooled and the resulting thermoplastic structure removed.An apparatus for practicing the above process comprising a mold form, heating system, and particulate thermoplastic material dispensing system is also disclosed.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: June 19, 1990
    Assignee: Fiber Technology Corporation
    Inventors: Larry Ashton, Roland J. Christensen, Randy L. Crane
  • Process and apparatus for forming hollow structures from powdered thermoplastic materials
    Patent number: 4776996
    Abstract: A process is disclosed for forming a thermoplastic structure on the exterior surface of the heated mold form. A mold is heated to approximately two times the melting temperature of a thermoplastic material and particulate thermoplastic material then sprinkled onto the exterior surface of the heated mold. An adhesively bondable material may then be added to the semi-molten thermoplastic material structure. The mold is then cooled and the resulting thermoplastic structure removed.An apparatus for practicing the above process comprising a mold form, heating system, and particulate thermoplastic material dispensing system is also disclosed.
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: October 11, 1988
    Assignee: Fiber Technology Corporation
    Inventors: Larry Ashton, Roland J. Christensen, Randy L. Crane