(12) United States Patent Mumm et a1. US008367933B1 US 8,367,933 B1 Feb. 5, 2013 (10) Patent N0.: (45) Date of Patent: (54) (75) (73) (21) (22) (60) (51) (52) (58) DATA CABLES WITH IMPROVED PAIR PROPERTY BALANCE Inventors: Jeffrey H. Mumm, Marietta, GA (US); Justin W. Mintz, Hoisington, KS (US); Nathaniel Ostrander, Woodstock, GA (Us) Assignee: Superior Essex Communications LP, Atlanta, GA (U S) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 229 days. Appl. No.: 12/803,119 Filed: Jun. 18, 2010 Related US. Application Data Provisional application No. 61/269,075, ?led on Jun. 19, 2009. Int. Cl. H01B 11/02 (2006.01) US. Cl. ................................................. .. 174/113 R Field of Classi?cation Search ............ .. 174/113 R, 174/113 C, 110 F See application ?le for complete search history. (56) References Cited U.S. PATENT DOCUMENTS 3,945,974 A 3/1976 SchWarcZ et 31. 4,412,094 A 10/1983 Dougherty et a1. 5,162,609 A 11/1992 Adriaenssens et a1. 5,270,486 A 12/1993 Chan et a1. 5,493,071 A 2/ 1996 Newmoyer 5,514,837 A 5/1996 Kenny et a1. 5,576,515 A 11/1996 Bleich et a1. 5,597,981 A 1/1997 Hinoshita et a1. 5,770,820 A 6/1998 Nelson et a1. 5,841,073 A 11/1998 Randa et a1. RE37,010 E 1/2001 Newmoyer 7,030,321 B2 4/2006 Clark 7,084,348 B2 8/2006 Dillon FOREIGN PATENT DOCUMENTS JP 2010-123275 * 6/2010 * cited by examiner Primary Examiner * Chau Nguyen (57) ABSTRACT A communication cable can comprise twisted pairs of elec trical conductors for transmitting electrical signals, such as for digital communication or data transmission. The pairs can be twisted to different lengths, thereby managing interference among the pairs. The electrical conductors of the pairs can be individually insulated With a polymeric material comprising a base polymer that is foamed With a gas such as nitrogen. The respective foaming levels of the electrical conductors in each pair can be selected to balance electrical properties among the pairs. 25 Claims, 29 Drawing Sheets
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(12) United States Patent Mumm et a1.
US008367933B1
US 8,367,933 B1 Feb. 5, 2013
(10) Patent N0.: (45) Date of Patent:
(54)
(75)
(73)
(21)
(22)
(60)
(51)
(52) (58)
DATA CABLES WITH IMPROVED PAIR PROPERTY BALANCE
Inventors: Jeffrey H. Mumm, Marietta, GA (US); Justin W. Mintz, Hoisington, KS (US); Nathaniel Ostrander, Woodstock, GA (Us)
Assignee: Superior Essex Communications LP, Atlanta, GA (U S)
Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 229 days.
Appl. No.: 12/803,119
Filed: Jun. 18, 2010
Related US. Application Data
Provisional application No. 61/269,075, ?led on Jun. 19, 2009.
Field of Classi?cation Search ............ .. 174/113 R,
174/113 C, 110 F See application ?le for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
3,945,974 A 3/1976 SchWarcZ et 31. 4,412,094 A 10/1983 Dougherty et a1. 5,162,609 A 11/1992 Adriaenssens et a1. 5,270,486 A 12/1993 Chan et a1. 5,493,071 A 2/ 1996 Newmoyer 5,514,837 A 5/1996 Kenny et a1. 5,576,515 A 11/1996 Bleich et a1. 5,597,981 A 1/1997 Hinoshita et a1. 5,770,820 A 6/1998 Nelson et a1. 5,841,073 A 11/1998 Randa et a1. RE37,010 E 1/2001 Newmoyer 7,030,321 B2 4/2006 Clark 7,084,348 B2 8/2006 Dillon
FOREIGN PATENT DOCUMENTS
JP 2010-123275 * 6/2010
* cited by examiner
Primary Examiner * Chau Nguyen
(57) ABSTRACT A communication cable can comprise twisted pairs of elec trical conductors for transmitting electrical signals, such as for digital communication or data transmission. The pairs can be twisted to different lengths, thereby managing interference among the pairs. The electrical conductors of the pairs can be individually insulated With a polymeric material comprising a base polymer that is foamed With a gas such as nitrogen. The respective foaming levels of the electrical conductors in each pair can be selected to balance electrical properties among the pairs.