Raymond K Swartz

US Patent:

44274696, Jan 24, 1984

Filed:

Nov 18, 1982

Appl. No.:

6/442823

Inventors:

Raymond K. Swartz - Lilburn GA
Horst L. Woellner - Omaha NE

Assignee:

Western Electric Co., Inc. - New York NY

International Classification:

H01B 1306

US Classification:

156 50

Abstract:

A tinned conductor is advanced through each of a plurality of successively smaller die openings in a drawing apparatus to reduce the diameter of the tinned conductor after which it is annealed. After the tinned conductor has been annealed, it is moved through the opening of a die which is slightly smaller than the final die opening in the drawing apparatus. This reconfigures any of the tin coating that may have reflowed during annealing and formed protrusions to remove any such protrusions and form an essentially smooth surface. As a result, the adhesion of a subsequently extruded plastic covering to the tinned conductor is controlled to be within a predetermined range and to be substantially uniform along the length of the conductor.

US Patent:

45103461, Apr 9, 1985

Filed:

Sep 30, 1983

Appl. No.:

6/538067

Inventors:

Talmage P. Bursh - Marietta GA
Dean I. Davis - Omaha NE
John T. Slominski - Omaha NE
Raymond K. Swartz - Lilburn GA

Assignee:

AT&T Bell Laboratories - Murray Hill NJ
AT&T Technologies, Inc. - New York NY

International Classification:

H01B 1106

US Classification:

174 36

Abstract:

A cable which provides suitable shielding over a relatively wide range of frequencies includes a core (22), and inner shield (32), an outer shield (34) which engages electrically the inner shield, and a jacket (60). Each shield is a laminate which includes a metallic layer comprising a suitable metallic shielding material and a plastic layer. The inner shield has its plastic layer (38) disposed toward the core whereas the plastic layer (52) of the outer shield is oriented toward the jacket. Also, each shield is formed with an unjoined, longitudinal overlapped seam. In order to insure continued shielding when the cable is flexed, the longitudinal seams of the cable are displaced from each other as measured in a direction circumferentially of the core.