Patents by Inventor Richard Godefroy

Richard Godefroy 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).

  • Process and device for replacing an underground pipe
    Patent number: 5207533
    Abstract: In order to replace a first underground pipe such as a metal pipe by a second pipe of mean diameter substantially equal to or greater than that of the first pipe, the first pipe is cut longitudinally by a localized projection of a flow of matter, particles or radiation thanks to a localized projection means which are displaced inside the first pipe in order to divide the first pipe longitudinally into at least two segments. Cutting by localized projection avoids in particular the creation of vibrations during fragmentation of the pipe to be replaced.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: May 4, 1993
    Assignee: Gaz de France
    Inventors: Eric Federspiel, Richard Godefroy