Paul G Koehler

US Patent:

20030106704, Jun 12, 2003

Filed:

Dec 6, 2001

Appl. No.:

10/008438

Inventors:

James Isley - Omaha NE, US
Paul Koehler - Omaha NE, US
Daniel Parke - Omaha NE, US
David Wiebelhaus - Omaha NE, US
Stephen Zerbs - Gretna NE, US

International Classification:

H01B011/02

US Classification:

174/11300R

Abstract:

An electrical cable has twenty or more twisted pairs of conductors therein formed into units of three twisted pairs and four twisted pairs, with a centrally located additional four pair unit. Dielectric film or tape partially surrounds either the three pair units or the four pair units or both to maintain separation of each unit from adjacent units. The conductors of the pairs in each unit have different twist lengths relative to the other conductors in the unit, and the units have different lay lengths, depending on the number of pairs in each unit.

US Patent:

44464223, May 1, 1984

Filed:

Nov 24, 1981

Appl. No.:

6/324367

Inventors:

Paul G. Koehler - Omaha NE
Thomas P. Leahy - Omaha NE
Thomas P. Lichliter - Omaha NE

Assignee:

AT&T Technologies, Inc. - New York NY

International Classification:

G01R 3112
G01R 3108

US Classification:

324 54

Abstract:

During the manufacture and/or packaging of insulated conductors, insulation defects are detected, measured, and classified by the methods and apparatus of this invention. As a twisted pair of insulated conductors (21-21), for example, is advanced along a manufacturing line (25), the insulation covers (23-23) are engaged by a probe (32) which is connected to a source of electrical power and to an electrical circuit (30). The circuit is adapted to process signals received from the probe and to make comparisons with stored signals to indicate the occurrence of pinholes, faults or bare wire in the insulation covers. In order to be accurate in its comparison and classification, the circuit includes provisions for correcting for current flow between the probe and the metallic conductors prior to and subsequent to the pair being moved through the probe and for the thickness of the probe. Depending upon the nature of the defect and its frequency of occurrence, the circuit may be caused to discontinue further operation of the line.

US Patent:

62883283, Sep 11, 2001

Filed:

Mar 19, 1999

Appl. No.:

9/272514

Inventors:

Douglas R. Brake - Ralston NE
Philip Nelson Gardner - Suwanee GA
Trent M. Hayes - Suwanee GA
Paul G. Koehler - Omaha NE
Dean J. Schwery - Omaha NE
Stephen Taylor Zerbs - Gretna NE

Assignee:

Avaya Technology Corp. - Basking Ridge NJ

International Classification:

H01B 1100

US Classification:

174 28

Abstract:

A coaxial cable [10, 50] includes an inner conductor [11] that is separated from an outer conductor [13] by a layer of insulating material [12]. The outer conductor includes a thin sheet of metallic foil that envelops the insulating material and has a seam [14] that extends in the longitudinal direction of the cable. In a first embodiment, the insulated conductor is axially rotated (twisted) with respect to its own longitudinal axis. In a second embodiment, the outer conductor is wrapped around the layer of insulating material. In both embodiments, there is relative rotation between the insulated conductor and the outer conductor. This practice is referred to as relative insulated conductor rotation, and it significantly improves the structural return loss characteristics of a coaxial cable when the outer conductor includes an asymmetry, such as a seam, that extends in the longitudinal direction of the cable. A braided-wire shield [15] is positioned between the outer conductor and a plastic jacket [16], which provides environmental protection for the cable.