Hughes Aircraft Company

General Dynamics Corporation, Convair Division

Lloyd A Guth

A method of specifying and verifying tight toleranced positional accuracies of external conductive patterns on electronic substrates relative to non-plated tooling hole patterns in the same substrate comprising the addition of round plated or otherwise deposited disks incorporated into the conventional plated art work of the substrate. These disks are positioned at the exact ideal location of each tooling hole. When the substrate manufacturing process is complete and the tooling holes have been drilled through at a correct location, the tooling hole will be positioned within the area of each disk on the substrate. If the tooling hole or holes is/are drilled at an unacceptable location, i.e. outside of the area of the disk, then the component receiving non-plated tooling holes, plated through holes and plated lands will also be miss-positioned and the substrate is discarded. When the tooling holes are properly aligned it is now assured that the non-plated tooling holes and solder lands of each of two or more stacked substrates are properly aligned to accept various components which may extend from one stacked substrate to another.

Method for specifying and verifying positive graphics pattern positions

A self-aligning connector that is used with electrical plug-in-module connectors. The self-aligning connector has an elongated connector body with a cutout portion extending from its top surface to its bottom surface to form a walled structure that would surround an electrical contact area. A foot portion extends from each end of the connector body. Each foot portion has an inclined front surface that mates with the inclined bottom wedge surface of a wedge block. Elongated slots in the respective wedge blocks algin with vertically oriented bore holes in the foot portions and mounting screws are passed downwardly through the respective openings. As the mounting screws are tightened the wedge blocks and foot portions have relative translation along their inclined surfaces, thus aligning the connector in the cutout portion.

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San Diego, CA, United States of America

Lloyd A Guth