Patents by Inventor Alain de Crombrugghe

Alain de Crombrugghe 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).

  • Pipe coupling system
    Patent number: 4468057
    Abstract: In pipe coupling systems, elaborate equipment and tools are required for their assembly and disassembly; the disassembly procedure is time consuming and little, if any, of the fittings can be reused.The present invention relates to improvements in pipe attachment system to their fittings, particularly adapted for use with smooth surface pipe and tubing where assembly and disassembly is easily made with simple tools or without tools.Except for the sealing ring, all parts of the system are reuseable without special preparation.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: August 28, 1984
    Inventor: Alain de Crombrugghe