US3582536A - Corrugated coaxial cable - Google Patents
Corrugated coaxial cable Download PDFInfo
- Publication number
- US3582536A US3582536A US819691A US3582536DA US3582536A US 3582536 A US3582536 A US 3582536A US 819691 A US819691 A US 819691A US 3582536D A US3582536D A US 3582536DA US 3582536 A US3582536 A US 3582536A
- Authority
- US
- United States
- Prior art keywords
- cable
- coaxial cable
- pitch
- bending
- corrugated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 21
- 230000006735 deficit Effects 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 101100180402 Caenorhabditis elegans jun-1 gene Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
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
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1808—Construction of the conductors
-
- 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
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1834—Construction of the insulation between the conductors
- H01B11/1839—Construction of the insulation between the conductors of cellular structure
Definitions
- the corrugated sheath of outer conductor of solid copper provides substantially lower attenuation and, at thesame time, complete containment of leakage radiation.
- the corrugated cable is normally advantageous.
- a notable exception has heretofore existed in the type of use wherein the cable is exposed to frequent flexing.
- the corrugated cable is more or less freely interchangeable with older types of cable, the flexibility being generally fully adequate even though substantially less than that of the braided cable.
- the corrugated cable known before the present invention has not been suitable for applications involving repeated bending, as in coupling items of equipment frequently moved with respect to each other or in a movable test equipment and similar uses wherein the required bending force and the limited bending life which are of little significance in fixed installations become important.
- a typical corrugated foam cable is half-inch 50-ohm cable with a dielectric of low-loss polyethylene foam.
- Such cable has been manufactured for a number of years and is often used in fixed runs where braided cable would have been previously used. Such'cable, however, had heretofore had very limited bending life.
- the outer conductor of such cable normally fails after about a hundred or so cycles of bending back and forth to a radius of the neighborhood of 5 inches on a mandrel.
- the bending life may be specified in terms of a test more closely approximating actual use conditions than cycles of "radius bends.”
- One simple form of test rocks" the free end of a test specimen back and forth to apply reverse bending about a rigidly clamped portion until the point of failure.
- Such a test is readily automated by reciprocatory motion of a support ring or fork about a central position aligned with the clamped portion of the cable.
- a back-and-forth stroke of about inches (5 inches in each direction from the neutral position) at about 9 inches from the point of clamping of the cable produces failure points (in terms of full-bending cycles) fairly accurately predicting cable performance under most conditions of use for a halfinch cable.
- the corrugated cables of the prior art are found to fail after a number of cycles of the same general magnitude as in the reverse mandrel bending, i.e., ofthe order of l00 to 150 cycles.
- FIG. 1 is a view, partially in side elevation and partially broken away in longitudinal section, of the foamdielectric cable of the invention.
- FIG. 2 is a transverse sectional view of the cable.
- the illustrated cable is of conventional construction.
- the inner conductor 12, of stranded wire is surrounded by a foamdielectric sleeve 14 extruded thereon and the outer conductor 16, formed from a strip and welded at 18, is helically corrugated, the root or inner diameter 20 of the corrugation compressing the foam dielectric, but the crest 22 being spaced from the dielectric.
- the void 24 thus formed may be provided with moisture barriers (not illustrated) as described in US. Pat. No. 3,394,400 of Robert P. Lamons.
- the cable illustrated also employs, when so desired, a suitable plastic jacket. Where such a jacket is applied by extrusion, however, care must be used to insure that the plastic does not extend to any substantial depth in the corrugations.
- the primary object alteration of prior art constructions required for achievement of the improved performance of the invention is, shown by legend in the drawing, employment of a corrugation depth d and pitch P such that the ratio of the former to the latter is between 0.55 and 0.70.
- the outer diameter D, is from 3.5 to 4.5 times the pitch, and the thickness T of the copper sheet forming the outer conductor is between 0.05 P and 0.20 P.
- An exemplary embodiment of the invention employs an inner conductor 12 of No. 8(AWG) seven-strand copper wire, of which is extruded a foam polyethylene dielectric of approximately 0.325 outer diameter.
- the outer conductor 16 is formed from copper strip of0.0l0-inch thickness and helically corrugated, with generally sinusoidal corrugation configuration, to a depth of approximately 0.075 inch with a helix pitch of approximately 0.120.
- the bending life of the half-inch outer diameter cable is a large multiple of that of a conventional corrugated half-inch cable.
- the simulated actual usetest oscillation earlier described produced an average bending life of well over 1500 cycles.
- the reverse bending on a 5-inch radius produced no failures within the lifetime thus indicated by the other test.
- a coaxial cable comprising an inner conductor, a foam dielectric surrounding the inner conductor, and a helically corrugated copper outer conductor surrounding the dielectric, the improved construction having the ratio of the corrugation depth to the corrugation pitch of the copper outer conductor substantially in the range of 0.55 to 0.70 with the copper outer conductor having a ratio of thickness to corrugation pitch between 0.05 and 0.20 and having a ratio of outer diameter to pitch at least equal to 3.5, and having an inner conductor of stranded wire.
- the coaxial cable of claim 1 having the ratio of the outer diameter to corrugation pitch between 3.5 and 4.5.
Abstract
The bending life of coaxial cable with a helically corrugated copper outer conductor is greatly increased, without impairment of other important mechanical or electrical characteristics, by employing specific relations of corrugation pitch and depth to each other and to overall cable diameter.
Description
United States Patent Inventor RobertRMiller 3,870,792 1/1959 Penrose l74/l02(.6)X Chicago,lll. 3.121.136 2/1964 Mildnernm 174/28 AppLNo. 819,691 3,173,990 3 1965 Lamons l74/I02(.6)
Filed Apr. 28, 1969 FOREIGN PATENTS :ff f: 3 794,933 /1958 0166113111616 174/102.6
939,399 11 1948 France 174/28 Orland Park, Ill.
, Primary Examiner-Lararnie E. Askin AssislantExaminerA. T. Grimley CORRUGATED COAXIAL CABLE 1 Attorney-Leonard G. Nierman 2 Claims, 2 Drawing Figs.
[52] US. Cl 174/102, 138/121 [51] Int.Cl ..H0lb11/18 Field of Search 174/102,
102.6, 106.6, 36, 28, 29; 138/121, 2 128, 114, ABSTRACT: The bending life ofcoaxial cable with a helically 173; 333/96 99 corrugated copper outer conductor is greatly increased, without impairment of other important mechanical or electri- [56] References cued cal characteristics, by employing specific relations of corruga- UNITED STATES PATENTS tion pitch and depth to each other and to overall cable diame- 2,8l7,363 12/1957 Penrose 174/102(.6)X ter.
0. P d 0. F 20 0.05P 7' 0.20P
PATENIED JUN 1 ml JNVEWTOR OBERT F. MILLER 1 CORRUGATED COAXIAL CABLE superior resistance to crushing or other cross-sectional deformation, together with exclusion of moisture and similar mechanical advantages which permit operation under conditions which would produce prohibitive degradation of the performance of older cables, the corrugated sheath of outer conductor of solid copper provides substantially lower attenuation and, at thesame time, complete containment of leakage radiation. Wherever high standards of cable performance are required, particularly where conditions of use produce a hazard of crushing, etc., the corrugated cable is normally advantageous. However, a notable exception has heretofore existed in the type of use wherein the cable is exposed to frequent flexing. ln permanent fixed cable installations, the corrugated cable is more or less freely interchangeable with older types of cable, the flexibility being generally fully adequate even though substantially less than that of the braided cable. However, the corrugated cable known before the present invention has not been suitable for applications involving repeated bending, as in coupling items of equipment frequently moved with respect to each other or in a movable test equipment and similar uses wherein the required bending force and the limited bending life which are of little significance in fixed installations become important.
A typical corrugated foam cable is half-inch 50-ohm cable with a dielectric of low-loss polyethylene foam. Such cable has been manufactured for a number of years and is often used in fixed runs where braided cable would have been previously used. Such'cable, however, had heretofore had very limited bending life. The outer conductor of such cable normally fails after about a hundred or so cycles of bending back and forth to a radius of the neighborhood of 5 inches on a mandrel. Such mandrel bending'is of course not fully representative of actual conditions of use, in which the end of the cable is normally affixed to some item of equipment, and the bending motion is some form of back-and-forth movement of a remote portion of the cable, thus producing nonuniform bending which is maximized at the point where the cable is secured, i.e., its point of connection to an end connector. (The point of stress need not, of course, be at the end of the cable, since passage through a panel-mounted or wall-mounted feed-through bushing will have the same effect). Accordingly, the bending life may be specified in terms of a test more closely approximating actual use conditions than cycles of "radius bends." One simple form of test rocks" the free end of a test specimen back and forth to apply reverse bending about a rigidly clamped portion until the point of failure. Such a test is readily automated by reciprocatory motion of a support ring or fork about a central position aligned with the clamped portion of the cable. A back-and-forth stroke of about inches (5 inches in each direction from the neutral position) at about 9 inches from the point of clamping of the cable produces failure points (in terms of full-bending cycles) fairly accurately predicting cable performance under most conditions of use for a halfinch cable. The corrugated cables of the prior art are found to fail after a number of cycles of the same general magnitude as in the reverse mandrel bending, i.e., ofthe order of l00 to 150 cycles.
lt has been found that a large improvement can be effected in the bending life ofcorrugated copper foam-dielectric cables previously known by proper relation of the pitch of the helical corrugations to their depth and to the overall cable diameter. Not only is this improvement accompanied by no important loss or diminution of other features of mechanical or electrical performance, but indeed the performance features are substantially improved in a number of respects beyond the increase in bending life. Resistance to hydrostatic pressure is increased by a substantial factor and there is also increase of the strength against impact. The cable is much more flexible in terms of the force required for bending and the minimum bending radius is substantially reduced.
The manner of achievement of these objects is best described in connection with the drawing, in which:
FIG. 1 is a view, partially in side elevation and partially broken away in longitudinal section, of the foamdielectric cable of the invention; and
FIG. 2 is a transverse sectional view of the cable.
Except for the dimensioning established by experimentation, the illustrated cable is of conventional construction. The inner conductor 12, of stranded wire, is surrounded by a foamdielectric sleeve 14 extruded thereon and the outer conductor 16, formed from a strip and welded at 18, is helically corrugated, the root or inner diameter 20 of the corrugation compressing the foam dielectric, but the crest 22 being spaced from the dielectric. If so desired, the void 24 thus formed may be provided with moisture barriers (not illustrated) as described in US. Pat. No. 3,394,400 of Robert P. Lamons. The cable illustrated also employs, when so desired, a suitable plastic jacket. Where such a jacket is applied by extrusion, however, care must be used to insure that the plastic does not extend to any substantial depth in the corrugations.
The primary object alteration of prior art constructions required for achievement of the improved performance of the invention is, shown by legend in the drawing, employment ofa corrugation depth d and pitch P such that the ratio of the former to the latter is between 0.55 and 0.70. The outer diameter D,, is from 3.5 to 4.5 times the pitch, and the thickness T of the copper sheet forming the outer conductor is between 0.05 P and 0.20 P.
An exemplary embodiment of the invention employs an inner conductor 12 of No. 8(AWG) seven-strand copper wire, of which is extruded a foam polyethylene dielectric of approximately 0.325 outer diameter. The outer conductor 16 is formed from copper strip of0.0l0-inch thickness and helically corrugated, with generally sinusoidal corrugation configuration, to a depth of approximately 0.075 inch with a helix pitch of approximately 0.120. The bending life of the half-inch outer diameter cable is a large multiple of that of a conventional corrugated half-inch cable. The simulated actual usetest oscillation earlier described produced an average bending life of well over 1500 cycles. The reverse bending on a 5-inch radius produced no failures within the lifetime thus indicated by the other test.
What I claim is:
1. ln a coaxial cable comprising an inner conductor, a foam dielectric surrounding the inner conductor, and a helically corrugated copper outer conductor surrounding the dielectric, the improved construction having the ratio of the corrugation depth to the corrugation pitch of the copper outer conductor substantially in the range of 0.55 to 0.70 with the copper outer conductor having a ratio of thickness to corrugation pitch between 0.05 and 0.20 and having a ratio of outer diameter to pitch at least equal to 3.5, and having an inner conductor of stranded wire.
2. The coaxial cable of claim 1 having the ratio of the outer diameter to corrugation pitch between 3.5 and 4.5.
Claims (2)
1. In a coaxial cable comprising an inner conductor, a foam dielectric surrounding the inner conductor, and a helically corrugated copper outer conductor surrounding the dielectric, the improved construction having the ratio of the corrugation depth to the corrugation pitch of the copper outer conductor substantially in the range of 0.55 to 0.70 with the copper outer conductor having a ratio of thickness to corrugation pitch between 0.05 and 0.20 and having a ratio of outer diameter to pitch at least equal to 3.5, and having an inner conductor of stranded wire.
2. The coaxial cable of claim 1 having the ratio of the outer diameter to corrugation pitch between 3.5 and 4.5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81969169A | 1969-04-28 | 1969-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3582536A true US3582536A (en) | 1971-06-01 |
Family
ID=25228786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US819691A Expired - Lifetime US3582536A (en) | 1969-04-28 | 1969-04-28 | Corrugated coaxial cable |
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US (1) | US3582536A (en) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745232A (en) * | 1972-06-22 | 1973-07-10 | Andrew Corp | Coaxial cable resistant to high-pressure gas flow |
US3797104A (en) * | 1972-07-13 | 1974-03-19 | W Pote | Flexible coaxial cable and method of making same |
USRE30194E (en) * | 1973-10-01 | 1980-01-15 | Bunker Ramo Corporation | High frequency coaxial cable |
US4368350A (en) * | 1980-02-29 | 1983-01-11 | Andrew Corporation | Corrugated coaxial cable |
FR2544124A1 (en) * | 1983-04-08 | 1984-10-12 | Standard Telephones Cables Plc | COAXIAL CABLE AND METHOD FOR MANUFACTURING THE SAME |
US4631392A (en) * | 1984-07-13 | 1986-12-23 | Raychem Corporation | Flexible high temperature heater |
US4749823A (en) * | 1984-10-05 | 1988-06-07 | Kabelmetal Electro Gesellschaft Mit Beschrankter Haftung | Multi-wire electric power cable, particularly a supply cable for borehole units |
US4758685A (en) * | 1986-11-24 | 1988-07-19 | Flexco Microwave, Inc. | Flexible coaxial cable and method of making same |
US4822955A (en) * | 1987-03-13 | 1989-04-18 | Siemens Aktiengesellschaft | Cable with a core surrounded by a band having tensile elements |
US4921147A (en) * | 1989-02-06 | 1990-05-01 | Michel Poirier | Pouring spout |
US5239134A (en) * | 1991-07-09 | 1993-08-24 | Flexco Microwave, Inc. | Method of making a flexible coaxial cable and resultant cable |
US5527995A (en) * | 1994-08-03 | 1996-06-18 | The Okonite Company | Cable for conducting energy |
US5687774A (en) * | 1995-12-29 | 1997-11-18 | Chiang; Hanh | Flexible lamp tube for connecting a lamp and a lamp base |
US5760334A (en) * | 1996-07-24 | 1998-06-02 | Alcatel Kabel Ag & Co. | Metallic sheath for an electric cable and method of making the same |
US6255591B1 (en) * | 1998-10-13 | 2001-07-03 | Gerhard Ziemek | Electric cables with metallic protective sheaths |
US20030016532A1 (en) * | 2001-07-20 | 2003-01-23 | David Reed | Method and apparatus for flexible led lamp |
US6624358B2 (en) * | 2001-12-13 | 2003-09-23 | Andrew Corporation | Miniature RF coaxial cable with corrugated outer conductor |
US20030201116A1 (en) * | 2002-04-24 | 2003-10-30 | Andrew Corporation | Low-cost, high performance, moisture-blocking, coaxial cable and manufacturing method |
US20050159044A1 (en) * | 2004-01-16 | 2005-07-21 | Andrew Corporation | Connector and Coaxial Cable with Outer Conductor Cylindrical Section Axial Compression Connection |
US20060066421A1 (en) * | 2002-12-09 | 2006-03-30 | Dominique Lo Hine Tong | Bandpass filter with pseudo-elliptic response |
US20100212926A1 (en) * | 2009-02-24 | 2010-08-26 | Bong-Kwon Cho | Coaxial cable |
CN101000812B (en) * | 2006-12-08 | 2010-12-08 | 江苏亨鑫科技有限公司 | Corrogated pipe outer conductor leakage radio-frequency coaxial cable for mobile communication |
US20110036440A1 (en) * | 2009-08-07 | 2011-02-17 | Christian Frohne | Pipeline and mehtod for producing the same |
US20150107873A1 (en) * | 2013-10-21 | 2015-04-23 | Dekoron Wire & Cable LLC | Flexible armored cable |
US9171659B2 (en) * | 2012-09-14 | 2015-10-27 | Abb Research Ltd | Radial water barrier and a dynamic high voltage submarine cable for deep water applications |
US20170062095A1 (en) * | 2015-09-02 | 2017-03-02 | Commscope Technologies Llc | Coaxial cable with lower stress outer conductor |
US20170069409A1 (en) * | 2015-09-03 | 2017-03-09 | Commscope Technologies Llc | Coaxial cable with outer conductor adhered to dielectric layer and/or jacket |
US20190237215A1 (en) * | 2018-01-26 | 2019-08-01 | Hitachi Metals, Ltd. | Insulated Wire |
US20230160519A1 (en) * | 2021-11-23 | 2023-05-25 | Johns Manville | Exterior cladding for insulation systems |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR939399A (en) * | 1945-09-07 | 1948-11-12 | Int Standard Electric Corp | Improvements to coaxial electric cables for high frequencies |
US2817363A (en) * | 1952-10-31 | 1957-12-24 | Pirelli General Cable Works | Corrugated aluminium tube and electric cable employing the same as a sheath |
GB794933A (en) * | 1956-03-07 | 1958-05-14 | Pirelli General Cable Works | Improvements in or relating to metal tubes or metal sheaths of electric cables |
US3121136A (en) * | 1960-07-04 | 1964-02-11 | Mildner Raymond Charles | Co-axial cable having inner and outer conductors corrugated helically in opposite directions |
US3173990A (en) * | 1962-08-27 | 1965-03-16 | Andrew Corp | Foam-dielectric coaxial cable with temperature-independent relative conductor length |
US3870792A (en) * | 1972-07-24 | 1975-03-11 | Michiro Inoue | Certain dihydrophthalizines for treating hemorrhage and thrombosis |
-
1969
- 1969-04-28 US US819691A patent/US3582536A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR939399A (en) * | 1945-09-07 | 1948-11-12 | Int Standard Electric Corp | Improvements to coaxial electric cables for high frequencies |
US2817363A (en) * | 1952-10-31 | 1957-12-24 | Pirelli General Cable Works | Corrugated aluminium tube and electric cable employing the same as a sheath |
GB794933A (en) * | 1956-03-07 | 1958-05-14 | Pirelli General Cable Works | Improvements in or relating to metal tubes or metal sheaths of electric cables |
US3121136A (en) * | 1960-07-04 | 1964-02-11 | Mildner Raymond Charles | Co-axial cable having inner and outer conductors corrugated helically in opposite directions |
US3173990A (en) * | 1962-08-27 | 1965-03-16 | Andrew Corp | Foam-dielectric coaxial cable with temperature-independent relative conductor length |
US3870792A (en) * | 1972-07-24 | 1975-03-11 | Michiro Inoue | Certain dihydrophthalizines for treating hemorrhage and thrombosis |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745232A (en) * | 1972-06-22 | 1973-07-10 | Andrew Corp | Coaxial cable resistant to high-pressure gas flow |
US3797104A (en) * | 1972-07-13 | 1974-03-19 | W Pote | Flexible coaxial cable and method of making same |
USRE30194E (en) * | 1973-10-01 | 1980-01-15 | Bunker Ramo Corporation | High frequency coaxial cable |
US4368350A (en) * | 1980-02-29 | 1983-01-11 | Andrew Corporation | Corrugated coaxial cable |
FR2544124A1 (en) * | 1983-04-08 | 1984-10-12 | Standard Telephones Cables Plc | COAXIAL CABLE AND METHOD FOR MANUFACTURING THE SAME |
US4631392A (en) * | 1984-07-13 | 1986-12-23 | Raychem Corporation | Flexible high temperature heater |
US4749823A (en) * | 1984-10-05 | 1988-06-07 | Kabelmetal Electro Gesellschaft Mit Beschrankter Haftung | Multi-wire electric power cable, particularly a supply cable for borehole units |
US4758685A (en) * | 1986-11-24 | 1988-07-19 | Flexco Microwave, Inc. | Flexible coaxial cable and method of making same |
US4822955A (en) * | 1987-03-13 | 1989-04-18 | Siemens Aktiengesellschaft | Cable with a core surrounded by a band having tensile elements |
US4921147A (en) * | 1989-02-06 | 1990-05-01 | Michel Poirier | Pouring spout |
US5239134A (en) * | 1991-07-09 | 1993-08-24 | Flexco Microwave, Inc. | Method of making a flexible coaxial cable and resultant cable |
US5527995A (en) * | 1994-08-03 | 1996-06-18 | The Okonite Company | Cable for conducting energy |
US5687774A (en) * | 1995-12-29 | 1997-11-18 | Chiang; Hanh | Flexible lamp tube for connecting a lamp and a lamp base |
US5760334A (en) * | 1996-07-24 | 1998-06-02 | Alcatel Kabel Ag & Co. | Metallic sheath for an electric cable and method of making the same |
US6255591B1 (en) * | 1998-10-13 | 2001-07-03 | Gerhard Ziemek | Electric cables with metallic protective sheaths |
US20030016532A1 (en) * | 2001-07-20 | 2003-01-23 | David Reed | Method and apparatus for flexible led lamp |
US6808289B2 (en) | 2001-07-20 | 2004-10-26 | RPM Optoelectronics, LLC | Method and apparatus for flexible led lamp |
US6624358B2 (en) * | 2001-12-13 | 2003-09-23 | Andrew Corporation | Miniature RF coaxial cable with corrugated outer conductor |
US6693241B2 (en) | 2002-04-24 | 2004-02-17 | Andrew Corporation | Low-cost, high performance, moisture-blocking, coaxial cable and manufacturing method |
US20030201116A1 (en) * | 2002-04-24 | 2003-10-30 | Andrew Corporation | Low-cost, high performance, moisture-blocking, coaxial cable and manufacturing method |
US6912777B2 (en) | 2002-04-24 | 2005-07-05 | Andrew Corporation | Method of manufacturing a high-performance, water blocking coaxial cable |
US20060066421A1 (en) * | 2002-12-09 | 2006-03-30 | Dominique Lo Hine Tong | Bandpass filter with pseudo-elliptic response |
US7391287B2 (en) * | 2002-12-09 | 2008-06-24 | Thomson Licensing | Bandpass filter with pseudo-elliptic response |
US20050159044A1 (en) * | 2004-01-16 | 2005-07-21 | Andrew Corporation | Connector and Coaxial Cable with Outer Conductor Cylindrical Section Axial Compression Connection |
US20050159043A1 (en) * | 2004-01-16 | 2005-07-21 | Andrew Corporation | Connector and Coaxial Cable with Outer Conductor Cylindrical Section Axial Compression Connection |
US7044785B2 (en) | 2004-01-16 | 2006-05-16 | Andrew Corporation | Connector and coaxial cable with outer conductor cylindrical section axial compression connection |
CN101000812B (en) * | 2006-12-08 | 2010-12-08 | 江苏亨鑫科技有限公司 | Corrogated pipe outer conductor leakage radio-frequency coaxial cable for mobile communication |
US20100212926A1 (en) * | 2009-02-24 | 2010-08-26 | Bong-Kwon Cho | Coaxial cable |
US8779293B2 (en) * | 2009-02-24 | 2014-07-15 | Ls Cable & System Ltd. | Coaxial cable |
US8646490B2 (en) * | 2009-08-07 | 2014-02-11 | Nexans | Pipeline and method for producing the same |
US20110036440A1 (en) * | 2009-08-07 | 2011-02-17 | Christian Frohne | Pipeline and mehtod for producing the same |
US9171659B2 (en) * | 2012-09-14 | 2015-10-27 | Abb Research Ltd | Radial water barrier and a dynamic high voltage submarine cable for deep water applications |
US20150107873A1 (en) * | 2013-10-21 | 2015-04-23 | Dekoron Wire & Cable LLC | Flexible armored cable |
US9576702B2 (en) * | 2013-10-21 | 2017-02-21 | Dekoron Wire & Cable LLC | Flexible armored cable |
US20170062095A1 (en) * | 2015-09-02 | 2017-03-02 | Commscope Technologies Llc | Coaxial cable with lower stress outer conductor |
US20170069409A1 (en) * | 2015-09-03 | 2017-03-09 | Commscope Technologies Llc | Coaxial cable with outer conductor adhered to dielectric layer and/or jacket |
US20190237215A1 (en) * | 2018-01-26 | 2019-08-01 | Hitachi Metals, Ltd. | Insulated Wire |
US20230160519A1 (en) * | 2021-11-23 | 2023-05-25 | Johns Manville | Exterior cladding for insulation systems |
US11835169B2 (en) * | 2021-11-23 | 2023-12-05 | Johns Manville | Exterior cladding for insulation systems |
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