Patents by Inventor Richard C. Madden

Richard C. Madden 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).

  • Tool for forming a mason's trig and method
    Patent number: 5842372
    Abstract: A hand tool is disclosed for producing trigs from flat metal strips. The hand tool has a pair of opposite press blocks or "jaws." One jaw serves as a base. It has a loop affixed in it for receiving an insertion portion of the strip. It also has appropriate guides and stops for promoting proper location of the insertion portion and preventing its untimely dislocation. The other jaw has a corner edge which when the jaws are closed on the single ply of the insertion portion, forms the outer limit of the insertion portion and allows for initiating bending of the remaining portion of the strip back upon the insertion portion.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: December 1, 1998
    Assignee: Charlotte L. Madden
    Inventor: Richard C. Madden