Patents by Inventor Maxwell S. Campbell

Maxwell S. Campbell 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).

  • Patent number: 4130003
    Abstract: In the automated manufacture of helical coils from sheet-metal blanks, each station of a rotatable set or carrousel of winding stations picks up a flat elongated blank from a stationary loader and securely grips and locks one end in an angled position against a slightly-tapered arbor whose subsequent rotation then causes the blank to become tightly wrapped helically about the arbor while retractable ironing plates stretch-form it and while a second locking mechanism positions the opposite end of the blank untl wrapping is completed. The single thrust of a shaped actuating rod causes a locking member to both position itself and move into a clamping relation with the one end of the blank and the arbor, and both the second locking mechanism and the ironing plates are of toggle-type constructions which enable them to hold securely until positively released.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: December 19, 1978
    Inventor: Maxwell S. Campbell