Patents by Inventor John A. Caddy

John A. Caddy 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).

  • Internally supported filter
    Patent number: 4394147
    Abstract: An internally supported composite filter having a wire-like frame, two confronting sheets of filter media secured to the frame, a ring of adhesive at the center of the sheets secures their confronting faces together in a relatively uncompacted fashion, and a handle secured to the sheets proximate one of the corners of the frame which can be grasped by a workman to remove the filter from the mounting structure in a peel-away fashion.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: July 19, 1983
    Assignee: Allis-Chalmers Corporation
    Inventors: John A. Caddy, William A. Putman