Western Electric Company, Inc.

Bell Telephone Laboratories

Loring D Emery, Jr

Werner F Esseluhn

Bruce C Abraham

Walter R Holbrook

Charles L Davis

Harold A Griesemer

Robert H Stroup

Waldo D Apgar

An enclosed electrical device (42) includes an electrical circuit (50) having elements (48-68) which lie substantially in and along a plane (115). A member (70) is applied to a one side and a member (85) is applied to another side of the circuit (50) for at least partially enclosing the same. Conductors (48) and (49) of circuit (50) are fixedly penetrated, preferably by pins (74) which are fixedly engaged to enclosure members (70) and (85). Such engagement is advantageously provided by making the pins (74) an integral part of member (70), for example by including pins (74) in a premolded member (70). Such engagement is also advantageously provided by making pin-engaging sockets (94) an integral part of member (85), also for example by including the sockets (94) in a premolded member (85). By a preferred friction fit of pins (74) and sockets (94), the enclosure members (70) and (85 ) and circuit elements (48-68) are sufficiently fixed relative to one another to resist forces applied thereto in service.

Enclosed electrical devices

In making electrically asymmetrical semiconductor devices, it is generally necessary to orient all of the devices into a common polarity at some point in the manufacturing operation. To accomplish this, a magnetic turning chute receives those devices which do not have the desired common polarity and turns them into the common polarity. A helical magnetic field is established in the turning chute by arranging strip magnets into vertical helices around a cylinder. As the devices, which have magnetic properties, progress through the helical field, they are turned by the magnetic force. Further turning impetus is provided by nonmagnetic helical tracks disposed to coincide with the helical magnetic field so that the leads of the devices can slide along the tracks while they move through the chute. Air jets may be used to assist in forcing the devices through the apparatus.

Methods of and apparatus for orienting electrically asymmetrical devices

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Hamburg, PA, United States of America

Loring D Emery, Jr