Patents by Inventor Anthony C. Saunders

Anthony C. Saunders 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 stopper having a guide member to assist in guiding the stopper around a bend in a pipe
    Patent number: 5558130
    Abstract: A pipe stopper capable of moving along a pipe to block the pipe at a point remote from an access point. The pipe stopper comprises an elongate resilient body member provided with a resilient reinforcing member. A plurality of circumferential sealing members are spaced along the length of the body member and seals the pipe stopper to the pipe. A guide member extends from the front or leading end of the pipe stopper and guides the pipe stopper around a bend and/or elbow in the pipe. The pipe stopper may be part of a pipe stopper system for placing the pipe stopper at a point remote from an access point and for subsequently retrieving the pipe stopper.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: September 24, 1996
    Assignee: Synthotech Marine Limited
    Inventors: Martin B. McCabe, Anthony C. Saunders