ROBERT D ALLEN
Broker in Leominster, MA
License number
Massachusetts 9029980
Issued Date
Apr 1, 1999
Expiration Date
Feb 13, 2008
Type
Salesperson
Address
Address
Leominster, MA 01453
Professional information
Multiple Twisted Pair Data Cable With Geometrically Concentric Cable Groups
US Patent:
5821466, Oct 13, 1998
Filed:
Dec 23, 1996
Appl. No.:
8/772593
Inventors:
William T. Clark - Leominster MA
Joseph Dellagala - Shrewsbury MA
Robert Allen - Leominster MA
Joseph Dellagala - Shrewsbury MA
Robert Allen - Leominster MA
Assignee:
Cable Design Technologies, Inc. - Leominster MA
International Classification:
H01B 1102
US Classification:
174113R
Abstract:
A high-speed data communications cable has geometrically concentric layers of twisted pairs of wires. A first, innermost layer includes a first twisted pair of wires having a unique lay length and a first and second dielectric filler. A second geometrically concentric layer is formed about the innermost layer and includes 9 twisted pairs of wires having 5 lay lengths. A third geometrically concentric layer is formed about the second layer and includes 25 twisted pairs of wires having 5 lay lengths. The first, second and third layers are enclosed in a thermoplastic jacket resulting in a flexible data cable with a minimal diameter. Additional layers of more twisted pairs of wires may also be used. A plurality of communication cables may also be commonly sheathed.
Twisted Pair Cable Having Improved Crosstalk Isolation
US Patent:
7449638, Nov 11, 2008
Filed:
Dec 8, 2006
Appl. No.:
11/608320
Inventors:
William T. Clark - Leominster MA, US
Joseph J. Dellagala - Shrewsbury MA, US
Robert Allen - Leominster MA, US
Michael J. Rubera - Hubbardston MA, US
Joseph J. Dellagala - Shrewsbury MA, US
Robert Allen - Leominster MA, US
Michael J. Rubera - Hubbardston MA, US
Assignee:
Belden Technologies, Inc. - St. Louis MO
International Classification:
H01B 11/02
US Classification:
174113C
Abstract:
A cable that provides reduced alien crosstalk between similar twisted pairs in cables that are in close proximity to one another and/or crosstalk between twisted pairs of the cable. In one example, a cable includes a first twisted pair of insulated conductors, a second twisted pair of insulated conductors, a shaped separator positioned so as to separate the first twisted pair from the second twisted pair, and a jacket disposed about the first and second twisted pairs and the separator, wherein the shaped separator comprises a central arm and at least one enlarged portion disposed at a first end of the central arm.