John D Swaffield

US Patent:

51602822, Nov 3, 1992

Filed:

Apr 1, 1992

Appl. No.:

7/863368

Inventors:

John D. Swaffield - Woburn MA
John T. Doyle - Danvers MA

Assignee:

Precission Connector Devices, Inc. - Peabody MA

International Classification:

H01R 922

US Classification:

439721

Abstract:

A contact element of unitary construction, the contact element including a plurality of contact element mating portions which are connected via serpentine portions. The contact element being used in connector modules and providing both electrical connection and mechanical retention.

US Patent:

54102570, Apr 25, 1995

Filed:

Mar 15, 1993

Appl. No.:

8/031570

Inventors:

John D. Swaffield - Danvers MA

Assignee:

Precision Connector Designs, Inc. - Peabody MA

International Classification:

G01R 3102
H01R 1362

US Classification:

324755

Abstract:

An IC test/burn-in socket with spring cantilever beam contacts and a lid 4 that provides for self-aligning of the IC lead and the socket contacts 6. The lid is actuated from above, and the lid has three positions--one for an unloaded socket, one for holding the contacts apart for insertion of an IC, and the other for releasing the contacts such the the spring force of the cantilever beam contacts make electrical contact with the IC leads. The cantilever contacts are arranged in interdigitated rows. The flat cantilever contacts allow the contacts to spread a substantial distance to achieve the desired contact force and will thus accommodate a wider range of IC lead thicknesses and, so, be more forgiving than earlier designs. There is a lid with troughs to guide the contacts and a through hole whereby an IC is inserted. The troughs and through hole provide improved registration of IC lead to socket contacts.

US Patent:

51626160, Nov 10, 1992

Filed:

Feb 15, 1991

Appl. No.:

7/657449

Inventors:

John D. Swaffield - Danvers MA
Kurt C. Hetzel - Phoenix AZ

Assignee:

Precision Connector Designs, Inc. - Peabody MA

International Classification:

H02G 506

US Classification:

174 99B

Abstract:

A bus bar assembly including an elongated insulative base member and a plurality of modular insulative unit pieces attached to the base member and having contact receiving openings, conductive bus bars in an enclosed region defined by the base member and unit pieces, contact pins of the bus bar extending upward into insulative tubular members extending downward from and centered within the openings, insulative fins supporting the bus bars above a bottom wall of the base member, an insulative divider wall between adjacent bus bars extending upward from the bottom wall, mounting holes in the upper and lower walls, and an insulative shield between the region between mounting holes and the bus bars.