Patents by Inventor Albert Amblard

Albert Amblard 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 drilling into a pipe under pressure
    Patent number: 4648422
    Abstract: An apparatus for drilling into a pipe under pressure to form a branch has a casing which can be connected to an isolating valve of a tee-fitting and through which a drill bit passes within the tee-fitting and the valve. The drill bit is surrounded by a barrel sealed with respect to the casing so that the casing rearwardly of the drill bit forms a chamber receiving drilling debris.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: March 10, 1987
    Inventor: Albert Amblard