Patents by Inventor Maurice E. Perrain

Maurice E. Perrain 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).

  • Fire-proof device for a tube of fusible material which extends through a wall
    Patent number: 4109423
    Abstract: The device comprises a case of a material non-deformable under the effect of heat and mounted on the wall around at least a part of the tube. A mass of material capable of swelling under the effect of heat is enclosed in the case. An element of a material which is substantially non-fusible at temperatures which are developed in the course of a fire has a part which is planar and perpendicular to a radial direction relative to the tube and is movable and slidable in said radial direction in the case. The element normally bears on the outer surface of the tube and the mass of swelling material is disposed on the opposite side of the element to the tube.
    Type: Grant
    Filed: April 5, 1977
    Date of Patent: August 29, 1978
    Assignee: Pont-a-Mousson S.A.
    Inventor: Maurice E. Perrain