Patents by Inventor Frank Henning Blitchington

Frank Henning Blitchington 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).

  • Apparatus for positioning a pair of elements into aligned intimate contact
    Patent number: 4109158
    Abstract: A continuous flexible web includes a flat flexible insulation substrate, copper cladding on at least one major surface of the substrate and a film of photoresist material adhesively bonded longitudinally to the copper cladding. Prepunched holes are formed in and through the web to ultimately provide through-hole connections between printed circuits formed on opposite sides of the substrate.Successive sections of the web are indexed through an apparatus where the sections are positioned adjacent to a circuit pattern master and exposed to resist-developing ultraviolet rays. A photocell system cooperates with through-slots formed selectively in the web to precisely align the web sections with the circuit pattern master prior to exposure to the ultraviolet rays.
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: August 22, 1978
    Assignee: Western Electric Company, Inc.
    Inventors: Frank Henning Blitchington, George David Hudson