Pulse or digital communications – Cable systems and components – Transformer coupling
Reexamination Certificate
2008-08-27
2011-11-15
Lugo, David (Department: 2611)
Pulse or digital communications
Cable systems and components
Transformer coupling
Reexamination Certificate
active
08059725
ABSTRACT:
An induction neutralizing transformer is provided. The induction neutralizing transformer includes a core and a coil wrapped around the core. The coil has a length between approximately 100 feet and approximately 200 feet and includes a plurality of twisted wire pairs. The induction neutralizing transformer does not include a screen or shield to prevent crosstalk interference.
REFERENCES:
patent: 3920925 (1975-11-01), Lindow
patent: 3932713 (1976-01-01), Fleuchaus et al.
patent: 4118603 (1978-10-01), Kumhyr
patent: 4440980 (1984-04-01), Bakker
patent: 5956073 (1999-09-01), Jin et al.
patent: 6266395 (2001-07-01), Liu et al.
patent: 6370000 (2002-04-01), Casey et al.
patent: 6556661 (2003-04-01), Ingalsbe et al.
patent: 7266154 (2007-09-01), Gundrum
patent: 7433412 (2008-10-01), Gundrum
patent: 2002/0101851 (2002-08-01), Blake, Jr. et al.
patent: 2 697 392 (1994-04-01), None
patent: 621-267-21 (1987-06-01), None
patent: 1363-491 (1987-12-01), None
Russ Gundrum, “Induction neutralizing transformer can reduce power line disturbances,” Telephony, 4 pages, Sep. 8, 1980.
“Inductive Coordination Low Voltage Neutralizing Transformers,” Bell System Practices, AT&TCo Standard, Section 873-505-107, May 1975, 11 pages, Issue 1.
Russ Gundrum, “Get ‘RID’ of glitches—With customer-owned equipment and use of telephone lines for data, it is more important than ever to eliminate noise and disturbances,” Telephone Engineer & Management, 4 pages, Oct. 15, 1985.
“IEEE Guide for the Implementation of Inductive Coordination Mitigation Techniques and Application,” IEEE Communications Society, 6 pages, Jun. 1, 1992.
Russ Gundrum, abc of the Telephone—Power line interference; problems and solutions, abc TeleTraining, Inc., 1982, vol. 14 (3 pgs).
“SNC HDR—Harmonic Drainage Reactor,” www.sncmfg.com//international/telecom/products/intlhdr.html, Apr. 22, 2002, 2 pages.
“Induction Neutralizing Transformers (INTs)—The Economical Solution to Induced AC Voltages, Currents or Harmonics,” www.sncmfg.com/international/telecom/products/intlint.html, Apr. 22, 2002, 4 pages.
“Induction Neutralizing Transforrners -INTs—The Economical Solution to Induced AC Voltages, Currents or Harmonics,” Wayback machine, archived web page from sncmfg.com, http://web.arcive.org/web/20010211012502/sncmfg.com/telecom
oise—protection/intinfo.html. Feb. 11, 2001, 4 pages.
“Transformer Exciting Network—TEN—The SNC TEN When There's No Pair to Square,” Wayback machine, archived web page from sncmfg.com, http://web.arcive.org/web/20010214224442/sncmfg.com/telecom
oise—protection/ten.html, Feb. 14, 2001, 2 pages.
AT&T Intellectual Property I L.P.
Lugo David
Toler Law Group
LandOfFree
Induction neutralizing transformer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Induction neutralizing transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Induction neutralizing transformer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4291658