WO2002069091A2 - Connecting web for cable applications - Google Patents
Connecting web for cable applications Download PDFInfo
- Publication number
- WO2002069091A2 WO2002069091A2 PCT/US2002/005263 US0205263W WO02069091A2 WO 2002069091 A2 WO2002069091 A2 WO 2002069091A2 US 0205263 W US0205263 W US 0205263W WO 02069091 A2 WO02069091 A2 WO 02069091A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cable
- elongate
- connecting web
- elongate cable
- communications
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000005728 strengthening Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 9
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/002—Pair constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0807—Twin conductor or cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0853—Juxtaposed parallel wires, fixed to each other without a support layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation
Definitions
- the present invention relates to connecting webs for cable applications and more particularly, to connecting webs for connecting side-by-side cables that can be readily removed from the side-by-side cables without leaving a residue on the cables that will prevent a connector or bulkhead grommet from properly sealing around the cable.
- Coaxial cables are widely used in many different applications such as the distribution of video signals. In most situations, a single coaxial cable is sufficient to carry the necessary signals. However, there are many other applications where multiple cables are needed and the cable manufacturing industry has provided various types of multiple cable assemblies to meet these needs.
- coaxial cable may be provided with an attached support wire or messenger wire.
- the messenger wire is positioned adjacent to and parallel with the coaxial cable with both cables being encased in thermoplastic insulating coatings.
- the two insulated cables are connected together by a web of the same thermoplastic insulating material forming an integral side-by-side coaxial cable and messenger wire support.
- pairs or triples of coaxial cable may be desired for redundancy or to increase signal carrying capacity.
- Multiple cable designs may also have twisted pair or multi-strand control wires placed adjacent to coaxial cables.
- Messenger wire supports may be added to these dual and triple cable designs. In each of these designs, the cables are held in a side-by-side relationship by a web usually formed out of the same material used to provide the outer cable insulation layer.
- the web To use such cables, the web must be severed for some distance back from the end of the cable to free the cable for connection to an end point. Often, the web is designed to be quite weak, allowing the adjacent cables to be pulled apart.
- this technique can result in damaging the insulating coating on one or more of the cables.
- the web material is not completely removed from one or more of the cables.
- a slitting tool can alternatively be used to separate the web between the cables.
- this ridge can interfere with proper attachment of an electrical connector.
- Coaxial connectors are usually designed for use with coaxial cables having a circular defect-free cross section.
- the excess web material left with prior slitting techniques produces a protrusion on the cross section that may prevent the cable from properly seating completely in the connector or a bulkhead grommet.
- the ridge may prevent the connector sleeve from properly sealing around the cable when the connector is crimped.
- the ridge of excess web material often provides a migration path for water, which can result in corrosion of the cable.
- the present invention provides a connecting web for side-by-side cables that eliminates the need for the use of slitting tools.
- the connecting web can be pulled away from the side-by-side cables without leaving a residue on either of the cables that will prevent a connector or bulkhead grommet from properly sealing around the cables.
- the connecting web of the invention also allows an end user to pull in several cables at once and then pull away the connecting web so that the finished product still includes individual sets of cable.
- the present invention includes a first elongate cable, a second elongate cable in parallel spaced apart relation from said first elongate cable and a connecting web between the first elongate cable and the second elongate cable.
- the connecting web is connected to the first elongate cable along a first surface and to the second elongate cable along a second surface and is preferably capable of being removed from the first elongate cable and the second elongate cable without leaving a residue of the connecting web on either cable that will prevent a connector or bulkhead grommet from properly sealing around the first elongate cable or the second elongate cable.
- the connecting web is capable of being detached from the first elongate cable and/or the second elongate by pulling away the connecting web.
- the communications cable can also include more than two elongate cables with each elongate cable connected to at least one other elongate cable through the use of the connecting web.
- the first elongate cable and the second elongate cable typically each include one or more cables selected from the group consisting of coaxial cables, fiber optic cables, twisted pair cables, electrical cables and support cables.
- at least one of the first elongate cable and the second elongate cable can include one or more cables within a cable jacket with the connecting web attached to the cable jacket.
- the connecting web has a longitudinal cross-section that is generally diamond-shaped.
- the connecting web can include a strengthening member oriented generally along a central longitudinal axis of the connecting web such as a cotton or polyester yarn.
- the connecting web can further or alternatively include a plurality of perforations along the first surface between the first cable and the connecting web and along the second surface between the second cable and the connecting web to facilitate removal of the connecting web from the first elongate cable and the second elongate cable.
- the connecting web preferably has a width of at least 0.05 inches and more preferably from about 0.06 inches to about 0.5 inches.
- the lateral cross-sectional area of the connecting web is preferably greater than the lateral cross-sectional area of the connecting web at the first surface and at the second surface.
- the lateral cross-sectional area of the connecting web preferably increases from the first surface to a central longitudinal axis of the connecting web and from the second surface to the central longitudinal axis.
- Figure 1 is a cross-sectional view of one embodiment of the invention wherein a connecting web having a generally diamond-shaped cross-section is used to connect side-by-side cables.
- Figure 2 is a cross-sectional view of one embodiment of the invention wherein a connecting web having a generally diamond-shaped cross-section and a strengthening member is used to connect side-by-side cables.
- Figure 3 is a perspective view of one embodiment of the invention wherein a connecting web having a plurality of perforations is used to connect side-by-side cables.
- Figure 1 illustrates a communications cable 10 according to a first embodiment of the invention.
- the communications cable 10 includes a plurality of elongate cables.
- Figure 1 includes three elongate cables 12, 14 and 16.
- the elongate cables 12, 14 and 16 extend longitudinally along a longitudinal axis (as illustrated by point A in cable 12) that extends along the length of the cable.
- Figure 1 illustrates the use of three cables, any configuration of two or more cables can be used in accordance with the invention.
- adjacent cables e.g. cables 12 and 14 or cables 14 and 16
- the elongate cables can represent either a single cable (e.g. a coaxial cable) or can include a plurality of cables provided within a cable jacket.
- the elongate cables can be coaxial cables, fiber optic cables, twisted pair cables, electrical cables, support or messenger cables, and the like. Suitable cables are described, for example, in coassigned U.S. Patent Nos.
- the first elongate cable is a coaxial cable (e.g. a drop cable) and the second elongate cable includes two twisted pair cables.
- adjacent cables e.g. cables 12 and 14 or cables 14 and 16 in Figure 1
- a connecting web 18 connects to cable 12 along a first surface 20 and to cable 14 along a second surface 22.
- the connecting web in this embodiment and in the other embodiments of the invention can be formed of any suitable thermoplastic material including but not limited to linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), low density polyethylene (LDPE), polyvinyl chloride (PVC), and mixtures thereof.
- the connecting web 18 is formed of the same material that is used to form the cable jacket(s) for the side-by-side cables.
- the connecting web 18 preferably has a width 19 of at least 0.05 inches and more preferably from about 0.06 to about 0.5 inches.
- the width 19 is preferably from about 0.06 inches to about 0.09 inches.
- the connecting web 18 preferably increases in cross- sectional area in a lateral direction from the first surface 20 and the second surface 22 to an intermediate location (e.g. C) on a lateral axis B between the first surface and the second surface.
- the lateral cross-sectional area of the connecting web 18 at an intermediate location C is greater than the lateral cross- sectional area of the connecting web along said first surface 20 and along said second surface 22.
- first and second surfaces 20 and 22 are smaller than at an intermediate location along the connecting web 18 that the connecting web 18 is capable of being readily detached from the cables by applying pressure (i.e. force) to the connecting web.
- the connecting web 18 can be removed without leaving a residue of the connecting web on either cable that will prevent a connector or bulkhead grommet from properly sealing around the cable, hi other words, when the connecting web 18 is removed, the cables are free of a residue that will prevent a connector or bulkhead grommet from properly sealing around the cable.
- the connecting web 18 includes a central longitudinal axis (as illustrated by point D) and the lateral cross-sectional area of the web increases from the first surface 20 to the center axis and from the second surface 22 to the central axis.
- the thickness 23 or cross-sectional height of the connecting web 18 along the central axis is preferably at least 0.025 inches (e.g. from 0.025 to 0.25 inches) and more preferably from about 0.03 to about 0.1 inches.
- the thickness 23 is preferably from about 0.03 to about 0.035 inches.
- the thickness of the connecting web 18 along the first and second surfaces 20 and 22, on the other hand, is preferably from about 0.005 to about 0.012 inches.
- the connecting web 18 preferably has a longitudinal cross-section that is generally diamond-shaped.
- FIG 2 illustrates an alternative embodiment of the invention wherein a communications cable 30 includes a first elongate cable 32 and a second elongate cable 34 in a side-by-side relationship and attached to one another through the use of a connecting web 36.
- the communications cable 30 in Figure 2 differs from the communications cable 10 illustrated in Figure 1 in that the communications cable 30 includes a strengthening member 38 oriented generally along a central axis of the connecting web 36.
- the strengthening member 38 provides a pulling point for the connecting web 36 to aid in the removal of the connecting web from the cables 32 and 34.
- the strengthening member 38 can be formed of any suitable material such as a yarn material. Cotton and polyester yarns are particularly useful for use as the strengthening member 38.
- the communications cable 10 and 30 illustrated in Figures 1 and 2 can be manufactured by advancing two or more cables (e.g. 32 and 34) in parallel spaced apart relation in a side-by-side relationship through an extruder mounted crosshead.
- the thermoplastic materials listed above for use as the connecting web material are fed to the extruder and heated to form a polymer melt.
- the polymer melt is extruded over the cables.
- a strengthening member 38 is used, it is positioned between the cables as they are advanced to the crosshead and the polymer melt is extruded over the cables and the strengthening member.
- a die is used to form the polymer melt into a connecting web 36 with a desired shape (i.e. cross-section) such as a diamond shape as it passes through the crosshead.
- the polymer melt then cools to form the connecting web 36, which connects the side-by-side cables to form the communications cable 10 and 30 of Figures 1 and 2.
- Figure 3 illustrates another embodiment of the invention.
- the communications cable 40 includes a first elongate cable 42 and a second elongate cable 44 in a side-by-side relationship and attached by a connecting web 46.
- the connecting web 46 connects to the first elongate cable 42 along a first surface 48 and connects to the second elongate cable 44 along a second surface 50.
- the connecting web 46 includes a plurality of perforations 52 along both the first surface 48 and the second surface 50.
- the perforations 52 can be in the form of holes or slits in the connecting web 46.
- the perforations 52 shown in Figure 3 are spaced from the first surface 48 and the second surface 50 for illustration purposes only because it would be difficult to view the perforations otherwise in the figure.
- the perforations 52 are provided directly along the first surface 48 and second surface 50 so that when the connecting web 46 is removed by pulling on the connecting web, there is no residue of the connecting web 46 remaining on the surface of the cables 42 and 44.
- the connecting web 46 is provided having a substantially constant cross-section from said first surface 48 to said second surface 50 in Figure 3 but can have a varying cross section, e.g., a cross section that increases in area from the first and second surfaces to a central axis as described in Figures 1 and 2 above.
- the connecting web 46 can include a strengthening member to • aid in pulling the connecting web from the cables 42 and 44.
- the communications cable 40 illustrated in Figure 3 can be manufactured by advancing two or more cables (e.g. 42 and 44) in parallel spaced apart relation in a side-by-side relationship through an extruder mounted crosshead.
- the thermoplastic materials listed above for use as the connecting web material are fed to the extruder and heated to form a polymer melt.
- the polymer melt is extruded over the cables.
- a die is used to form the polymer melt into a connecting web with a desired shape (i.e. cross- section) such as a diamond shape as it passes through the crosshead.
- the polymer melt then cools to form the connecting web 46, which connects the side-by-side cables to form the communications cable 40 of Figure 3.
- a small set of wheels with teeth such as a spur set can then be rolled along the connecting web 46 to form the perforations 52.
- the connecting web 46 can be supported on one side while applying the spur set on the other side to facilitate the formation of the perforations 52.
- the present invention provides a connecting web 18 for side-by-side cables (e.g. 12, 14 and 16) that can be manually removed thus eliminating the need for slitting tools.
- two side-by-side cables can be separated by manually pulling them apart resulting in the separation of the connecting web 18 from one of the cables.
- the connecting web 18 can then be manually pulled away from the other cable.
- the connecting web 18 can be pulled away from both cables simultaneously by applying a force to the connecting web 18.
- the connecting web 18 is preferably pulled away at a pull-away rate from a cable using a force that is at least sufficient to separate the connecting web 18 from the cable but that is not so great as to exceed the tensile strength and thus the elastic limit of the material being used in the connecting web.
- the connecting web 18 can be pulled away from a cable at a rate of about 10 inches per minute by applying a force of from 0.5 and 1.5 pounds to the connecting web.
- the connecting web 18 is diamond shaped and formed of LLDPE, the connecting web has a tensile strength of 1.8 pounds force and a force of at least 0.5 pounds is sufficient to remove the connecting web 18 from the cable.
- the connecting web 18 does not leave a residue on either of the side-by-side cables that will prevent a connector or bulkhead grommet from properly sealing around the cable.
- using the connecting web 18 of the present invention facilitates good connectorization between the side-by-side cables and other cables.
- the connecting web provides a method of separating cables without damaging the cables during removal of the connecting web.
- the connecting web of the invention also allows an end user to pull in several cables at once and then pull away the connecting web so that the finished product still includes individual sets of cable as is desirable in the art.
Landscapes
- Insulated Conductors (AREA)
- Cable Accessories (AREA)
- Communication Cables (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0317681A GB2388953B (en) | 2001-02-23 | 2002-02-22 | Connecting web for cable applications |
AU2002240456A AU2002240456A1 (en) | 2001-02-23 | 2002-02-22 | Connecting web for cable applications |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27093301P | 2001-02-23 | 2001-02-23 | |
US60/270,933 | 2001-02-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2002069091A2 true WO2002069091A2 (en) | 2002-09-06 |
WO2002069091A3 WO2002069091A3 (en) | 2002-12-05 |
WO2002069091A8 WO2002069091A8 (en) | 2004-03-04 |
Family
ID=23033447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/005263 WO2002069091A2 (en) | 2001-02-23 | 2002-02-22 | Connecting web for cable applications |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2002240456A1 (en) |
ES (1) | ES2257908B1 (en) |
GB (1) | GB2388953B (en) |
WO (1) | WO2002069091A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1619695A2 (en) * | 2004-07-22 | 2006-01-25 | LG Cable Ltd. | A UTP cable assembly having means for preventing cross talk |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB625051A (en) * | 1946-09-10 | 1949-06-21 | British Insulated Callenders | Improvements in insulated electric wires |
US2666093A (en) * | 1950-04-19 | 1954-01-12 | Radix Wire Company | Low loss high-frequency transmission line |
DE3527847A1 (en) * | 1985-07-31 | 1987-02-05 | Siemens Ag | Flat electrical cable |
US4857010A (en) * | 1983-04-21 | 1989-08-15 | Molex Incorporated | Ribbon cable harness and method of making same |
-
2002
- 2002-02-22 AU AU2002240456A patent/AU2002240456A1/en not_active Abandoned
- 2002-02-22 WO PCT/US2002/005263 patent/WO2002069091A2/en active IP Right Grant
- 2002-02-22 ES ES200350050A patent/ES2257908B1/en not_active Expired - Fee Related
- 2002-02-22 GB GB0317681A patent/GB2388953B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB625051A (en) * | 1946-09-10 | 1949-06-21 | British Insulated Callenders | Improvements in insulated electric wires |
US2666093A (en) * | 1950-04-19 | 1954-01-12 | Radix Wire Company | Low loss high-frequency transmission line |
US4857010A (en) * | 1983-04-21 | 1989-08-15 | Molex Incorporated | Ribbon cable harness and method of making same |
DE3527847A1 (en) * | 1985-07-31 | 1987-02-05 | Siemens Ag | Flat electrical cable |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1619695A2 (en) * | 2004-07-22 | 2006-01-25 | LG Cable Ltd. | A UTP cable assembly having means for preventing cross talk |
EP1619695A3 (en) * | 2004-07-22 | 2009-04-08 | LS Cable Ltd. | A UTP cable assembly having means for preventing cross talk |
Also Published As
Publication number | Publication date |
---|---|
ES2257908B1 (en) | 2007-07-16 |
WO2002069091A3 (en) | 2002-12-05 |
ES2257908A1 (en) | 2006-08-01 |
GB2388953A (en) | 2003-11-26 |
GB2388953B (en) | 2005-12-07 |
GB0317681D0 (en) | 2003-09-03 |
AU2002240456A1 (en) | 2002-09-12 |
WO2002069091A8 (en) | 2004-03-04 |
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