US3811257A - Method and apparatus for applying armor tape - Google Patents

Method and apparatus for applying armor tape Download PDF

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Publication number
US3811257A
US3811257A US00280637A US28063772A US3811257A US 3811257 A US3811257 A US 3811257A US 00280637 A US00280637 A US 00280637A US 28063772 A US28063772 A US 28063772A US 3811257 A US3811257 A US 3811257A
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US
United States
Prior art keywords
core
strip
downstream
around
rolls
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
Application number
US00280637A
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English (en)
Inventor
H Burr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Radio Frequency Systems Inc
Original Assignee
Anaconda Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anaconda Co filed Critical Anaconda Co
Priority to US00280637A priority Critical patent/US3811257A/en
Priority to GB3760173A priority patent/GB1390890A/en
Priority to CA178,354A priority patent/CA1007840A/en
Priority to IT69439/73A priority patent/IT994600B/it
Priority to FR7329527A priority patent/FR2196511B1/fr
Priority to DE19732340833 priority patent/DE2340833A1/de
Priority to BR6194/73A priority patent/BR7306194D0/pt
Priority to JP48090084A priority patent/JPS4985329A/ja
Application granted granted Critical
Publication of US3811257A publication Critical patent/US3811257A/en
Assigned to ANACONDA-ERICSSON INC., A CORP. OF reassignment ANACONDA-ERICSSON INC., A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ANACONDA COMPANY, THE A CORP. OF DE
Assigned to ALCATEL NA, INC., A CORP OF DE. reassignment ALCATEL NA, INC., A CORP OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ERICSSON, INC.
Assigned to ALCATEL NA CABLE SYSTEMS, INC., A CORP. OF DELAWARE reassignment ALCATEL NA CABLE SYSTEMS, INC., A CORP. OF DELAWARE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ALCATEL NA, INC., 39 SECOND STREET NW, HICKORY, NORTH CAROLINA 28603 ACORP. OF DELAWARE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
    • B65H81/06—Covering or wrapping elongated cores
    • B65H81/08—Covering or wrapping elongated cores by feeding material obliquely to the axis of the core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/025—Preforming the wires or strands prior to closing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.

Definitions

  • the word strip as used in: this application refers to a strand'of non-circular. section. This is practically distinguishable from circular strand in that, when it is wrapped around a core, any. twisting-of the strand beyond that required by the helix of the wrap (or below that required for the helix); will be immediately evidenced as an unevennessin the surface'of-the wrapped core, and, where theuturns. are. closely abutted, in gaps in the coverage'of the core surface: When stiff armor is wrapped around-aflexible coreit presents a problem of bird-caging when the. core is bent or flexed.
  • a further problem that is not confronted with round'armor butmay be quite serious with strip resides in the tendency of one edge of the strips to rise while the other edge digs in. This may not only result to damage to the surface of the core and to loss of complete coverage, but it increases the cable diameter and reduces the surface smoothnessand ease of pulling. Where an outer covering'is applied over the armor, the upturned edges of the strip will tend to cut through it, make it more difficult to apply, and require an additional quantity of the outer covering.
  • Means of preforming flat wire has been suggested similar to known means for round wire and involving a bending of the wire, followed by straightening, wherein a strain is retained in the wire-disposing it tothe desired configuration. l have found that known types of preformers not only require a severe and unnecessary-working of the strip, but did not, in practice, result in a smooth and easily handled application of armor.
  • My preferred apparatus for applying armor strip to an elongated core comprises a plurality of supplies of strip and a supply of the core, means for advancing the core from the supply and means rotating the supplies of strip around the axis of the core at a speed having a selected ratio to the speed of advancing of the core.
  • My apparatus also'comprises plurality of support brackets equal to the plurality of supplies of strip and means mounting the bracket radially of the axis of the core and evenly spaced around the core.
  • a support arm is mounted on each of the brackets in a plane passing through the core axis and a pair of heavy rolls are provided foreach support arm with means mounting one pair upstream and one pair downstream while spacing the rolls of each pair a sufficient distance apart for the passage therebetween of the strip but sufficiently close to restrain the strip from turning.
  • the arms are sufficiently removed, radially, from. the core to cause bending of the strips beyond their elastic bending limit on leaving thedownstr'eam of the pairs of rolls, the angle fo the strip being naturally determined by the above recited ratio of speeds and the diameter of the core.
  • my apparatus comprises means for adjusting the distance between each upstream and downstream pair of rolls and lines them parallel to the core.
  • my apparatus comprises a circular plate, means mounting the plate concentric with and in a plane normal to the advance of the core, and means for fixing the bracketsevenly around the plate.
  • Advantagously' my apparatus may comprise a spacer disk mounted downstream of the rolls and defining a plurality of evenly spaced, preferably radial, guide slots for the strips to guide the strips uniformly around the core.
  • FIG. 2' shows a chart of the effect of twisting distance and bending angle on helix diameter
  • FIG. 3' shows a view through the lines 3-3 of FIG.
  • FIG. 4 shows a view through the lines 4-4 of FIG. I.
  • FIG. 5 shows a sideview of anotherembodiment of the bracket and arm assembly of my invention.
  • FIG. 6 shows a view through the lines 6-6 of FIG. 5-
  • FIG. 1 the steps of my method are shown as'performed with an apparatus indicated, generally by the numeral I0 for winding 24 copper clad steel strips 11 around a cable core 12. Supplies 13 of the stripon reels 14 are supported for rotation around the core 12 on a conventional stranding machine 16 of the type known as a rigid strander through which the core can pass from a large supply 17 on a reel 18.
  • a hollow mast 20 projects from a front plate 21 of the machine 16 and a large flat disk 22 is mounted around and supported by the mast 20.
  • the disk 22 is 35 inches in diameter since it has been found that this large size is advantageous for separating the twisting means for a large number of armor strips.
  • the disk 22 is bolted to a plate on the end of the mast 20.
  • the disk 22 is welded to a hub 23 and 3 gusset plates 24, which, in turn are welded to an alignment ring 26.
  • Bolts 27 through the hub 23 and bolts 28 through the ring 26 adjustably support a tube 19. By loosening the bolts the position of the tube 19 lengthwise of the mast can be adjusted.
  • the disk 22 is pierced by a plurality of pairs of clearance holes 29, 21 each cooperating with holes 32, 33 in a bracket 34 so that 24 of the brackets, equal to the number of strips, can be radially mounted around the disk 22 by means oflock bolts 36.
  • Clearance holes 37, 38 at the tops of the brackets match tapped holes 39, 41 in 24 support arms 42 so that the latter can be mounted'in lines parallel to the core 12.
  • the arms 42 bear lengthwise grooves 43, 44 for sliding but lockable engagement with plates 45, 46 each rigidly mounting a pair of heavy rolls such as rolls 47, 48 on the plate 46, having a gap 49 between them through which the strip 11 can' pass without excessive friction but small enough to prevent the strip from twisting.
  • a spacer 51 in the form ofa circular disk with 24'deep radial slots 52 wide enough to pass the strips 11 without'obstruction, is mounted at an end 53 of the tubel9. Downstreamof the spacer 51 a smoothing die 54 is. mounted on a standard 56 to guide and supportthe armored cable '57 which is urged forward by a capstan 58 connected through suitable gearing to advance the cable at a fixed ratio to the rotation of the stranding machine 16.
  • the rolls 47, 48 on the plate 46 are mounted 6 inches downstream of a pair of rolls 59, 61 similarly mounted on the plate 45.
  • the plates 45,46 are locked on the arm 42 to establish the 6-inch distance by means ofmatching plates 62, 63 and nuts 64 which tighten onto threaded shafts 66 of the rolls 47, 48, 59, 61 and identical rolls mounted similarly around the disk 22.
  • the rolls 47, 48 the strip 11 takes a full twist 67 around its own axis and the twisting of the strip is continued downstream of the rolls 47, 48 in complete twists 68, 69, 71 to the point where it reaches, and wraps around, the core 12.
  • each of the strips passes through one of the slots 52 in the spacer 5] and the spacer is so positioned as to be at a section where the twisting of the strips has turned their long dimension of the section radial to the'core.
  • the spacer 51 is positioned as far downstream as possible so that is has the maximum effect of distributing the strips evenly around the core.
  • the 6-inch separation of the rolls 59, 61 and 47, 48 was determined .for the strips 11 by a simple experimental procedure to be described hereinafter,- as was the determination to apply a full twist to the strip between the roll pairs. With all the rolls on parallel axes a half-twist or any multiple thereof might be applied to the strip, as desired, and by mounting one .pair of rolls on an oblique claims.
  • the twist 67 serves to preform the strip into the shape it will have when it is helically applied to the core, and for this purpose the degree of twisting must exceed the elastic twisting limit of the strip so that a permanent residual twist remains, downstream of the rolls 47, 48.
  • This degree of twisting, determining the pitch of the residual twist depends upon both the angle to which the strip is twisted between the pairs of rolls 59, 61 and 47, 48 and the distance between the rolls, both of which can be selected in the apparatus 10.
  • an angle of twist, 360 for the illustrated twist 67 the strips are twisted by means of an appropriate hand tool during the stringing up of the apparatus before the leading ends of the strips are initially bound to the core 12.
  • the abscissa represents the diameter of the helix that will be assumed by the strips and the ordinate represents the lay length or pitch of this helix. From the chart of FIG. 2 it is evident that, for a given distance between roll pairs, a greater helix diameter results from a sharper bend over the roll 48 (an increased angle A), and that, for a given angle A, a decrease in the distance between roll pairs will decrease the lay length.
  • the diameter of the roll 48 In bending around the roll 48 a sharp enough bend must be made so that the elastic limit of the strip in bending is exceeded and a permanent deformationv takes place. For this reason, and also because it must accommodate the twist in the strip, the diameter of the roll 48 must be kept small. In the illustrated apparatus 10 the diameters of the rolls is 1% inches.
  • FIGS. 5 and 6 I have shown a modified embodiment of the brackets and arm of my apparatus which provides for adjustment of the radial distance of the arm from the core and for varying the angle A.
  • a modified bracket 72 has a lengthwise slot 73 in its outer extremity which becomes radial on the apparatus.
  • An arm 74 mounting the plates 46 is adjustably locked to the bracket 72 by means of a large headed bolt 76 and nut 77. By tilting the arm 74 to the position shown in phantom in FIG. 5, before tightening the nut, the angle is increased to the angle A.
  • a guide plate 78 has been welded to each of the upstream of the plates 46 to avoid sharp bending of the strip 11 on entering an upstream pair of rolls 79, 81.
  • a method of helically applying at least one armor strip to an elongated core comprising the steps of:
  • An apparatus for applyingarmor strips to an elongated core comprising: A. a plurality of supplies of said core. I v
  • C. means rotating said supplies of strip around the axis of said core at a speed having a selected ratio said strip and a supply of to the speed of advancing of said core
  • H. means mounting one of said pairs at an upstream position and one of said pairs at a downstream position on each of said arms, said means spacing the rolls of each pair a distance sufficiently separated for the passage therebetween of said strips and sufficiently narrow to restrain said strips from turning, said arm being sufficiently removed radially from said core to bend said strip beyond itselastic bending limit on leaving the downstream of said pairs, the angle of said strip being naturally determined by said ratio and the diameter of said core.
  • the apparatus of claim 8 comprising means for adjusting the distance between said upstream and downstream pairs.
  • bracket mounting means comprises a circular plate, means mounting said plate normal to the advance of said core and concentric therewith, and means for fixing said brackets evenly around said plate.
  • the apparatus of claim 7 comprising a spacer disk. means mounting said disk downstream of said rolls, said disk defining a plurality of'evenly spaced radial guide slots for said strips whereby said strips are uniformly guided around said core.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ropes Or Cables (AREA)
  • Wire Processing (AREA)
US00280637A 1972-08-14 1972-08-14 Method and apparatus for applying armor tape Expired - Lifetime US3811257A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00280637A US3811257A (en) 1972-08-14 1972-08-14 Method and apparatus for applying armor tape
GB3760173A GB1390890A (en) 1972-08-14 1973-08-08 Method and apparatus applying armour tape
CA178,354A CA1007840A (en) 1972-08-14 1973-08-08 Method and apparatus for applying armor tape
IT69439/73A IT994600B (it) 1972-08-14 1973-08-10 Procedimento e macchina per l applicazione di un nastro di corazzatura su cavi elettrici
DE19732340833 DE2340833A1 (de) 1972-08-14 1973-08-13 Verfahren und vorrichtung zum aufbringen von bewehrungsband auf einen laenglichen kern, insbesondere auf eine kabelseele
BR6194/73A BR7306194D0 (pt) 1972-08-14 1973-08-13 Processo e aparelho para aplicacao helicoidal de pelo menos uma tira de armadura a uma alma alongada
FR7329527A FR2196511B1 (it) 1972-08-14 1973-08-13
JP48090084A JPS4985329A (it) 1972-08-14 1973-08-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00280637A US3811257A (en) 1972-08-14 1972-08-14 Method and apparatus for applying armor tape

Publications (1)

Publication Number Publication Date
US3811257A true US3811257A (en) 1974-05-21

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ID=23073956

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Application Number Title Priority Date Filing Date
US00280637A Expired - Lifetime US3811257A (en) 1972-08-14 1972-08-14 Method and apparatus for applying armor tape

Country Status (8)

Country Link
US (1) US3811257A (it)
JP (1) JPS4985329A (it)
BR (1) BR7306194D0 (it)
CA (1) CA1007840A (it)
DE (1) DE2340833A1 (it)
FR (1) FR2196511B1 (it)
GB (1) GB1390890A (it)
IT (1) IT994600B (it)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064685A (en) * 1976-04-28 1977-12-27 W. H. Kuester K.G. Preforming apparatus for wires in stranding machines
US4124971A (en) * 1977-03-21 1978-11-14 Arch Manufacturing Company Cable winding apparatus and method
DE3322194A1 (de) * 1982-06-22 1983-12-22 Coflexip S.A., Paris Verfahren zur herstellung flexibler rohrkoerper, vorrichtung zur durchfuehrung dieses verfahrens und nach dem verfahren hergestellte rohrkoerper
US4539739A (en) * 1983-12-29 1985-09-10 Harvey Hubbell Incorporated Apparatus for making armored electrical cable
US4599853A (en) * 1984-06-18 1986-07-15 Ceeco Machinery Manufacturing Limited Method and apparatus for manufacturing compact conductors with bunchers
US4609416A (en) * 1983-12-29 1986-09-02 Harvey Hubbell Incorporated Method for making armored electrical cable
US20040129752A1 (en) * 2002-12-23 2004-07-08 The Procter & Gamble Company Web twister removal process
US20110174039A1 (en) * 2008-07-28 2011-07-21 Fabien Roche Method and installation for constructing a layer of amour strips
CN103594208A (zh) * 2013-11-22 2014-02-19 江苏美电电工机械科技有限公司 双带联锁铠装机
CN104944232A (zh) * 2014-03-25 2015-09-30 合肥神马科技集团有限公司 一种锁扣铠装机及其导带换向成型装置
CN104944230B (zh) * 2014-03-25 2017-01-25 合肥神马科技集团有限公司 一种锁扣铠装机
CN106486214A (zh) * 2015-08-28 2017-03-08 合肥神马科技集团有限公司 一种摇篮式成缆机及其预扭角度调整装置
US20190257012A1 (en) * 2018-02-22 2019-08-22 Bartell Machinery Systems, L.L.C. Armouring machine assembly with an adjustable guide plate
CN110379558A (zh) * 2019-06-18 2019-10-25 芜湖航天特种电缆厂股份有限公司 带状电缆用线芯牵引拉伸装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114362054B (zh) * 2022-03-21 2022-05-24 石家庄市森田电子通信有限公司 一种多线缆主动放卷式敷设设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295310A (en) * 1964-03-27 1967-01-03 Bethlehem Steel Corp Wire rope particularly useful for independent wire rope core
US3388541A (en) * 1966-03-04 1968-06-18 Albert A. Biagini Method and apparatus for stranding wires, or the like
US3717987A (en) * 1970-03-27 1973-02-27 American Chain & Cable Co Flat wire structure and apparatus and method of making same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595245C (de) * 1926-01-27 1934-04-07 Paul Kintschel Verfahren und Vorrichtung zur Herstellung verschlossener Drahtseile
US1958598A (en) * 1930-08-21 1934-05-15 Bell Telephone Labor Inc Machine for preshaping and applying tapes
FR1446688A (fr) * 1964-09-12 1966-07-22 Beteiligungs & Patentverw Gmbh Dispositif de décâblage et recâblage d'éléments de câblage sur des retordeuses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295310A (en) * 1964-03-27 1967-01-03 Bethlehem Steel Corp Wire rope particularly useful for independent wire rope core
US3388541A (en) * 1966-03-04 1968-06-18 Albert A. Biagini Method and apparatus for stranding wires, or the like
US3717987A (en) * 1970-03-27 1973-02-27 American Chain & Cable Co Flat wire structure and apparatus and method of making same

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064685A (en) * 1976-04-28 1977-12-27 W. H. Kuester K.G. Preforming apparatus for wires in stranding machines
US4124971A (en) * 1977-03-21 1978-11-14 Arch Manufacturing Company Cable winding apparatus and method
DE3322194A1 (de) * 1982-06-22 1983-12-22 Coflexip S.A., Paris Verfahren zur herstellung flexibler rohrkoerper, vorrichtung zur durchfuehrung dieses verfahrens und nach dem verfahren hergestellte rohrkoerper
GB2122301A (en) * 1982-06-22 1984-01-11 Coflexip Manufacture of flexible tubular bodies
US4590752A (en) * 1982-06-22 1986-05-27 Coflexip Method and device for the manufacture of flexible tubular bodies
US4539739A (en) * 1983-12-29 1985-09-10 Harvey Hubbell Incorporated Apparatus for making armored electrical cable
US4609416A (en) * 1983-12-29 1986-09-02 Harvey Hubbell Incorporated Method for making armored electrical cable
US4599853A (en) * 1984-06-18 1986-07-15 Ceeco Machinery Manufacturing Limited Method and apparatus for manufacturing compact conductors with bunchers
US20040129752A1 (en) * 2002-12-23 2004-07-08 The Procter & Gamble Company Web twister removal process
US7065948B2 (en) * 2002-12-23 2006-06-27 The Procter & Gamble Company Web twister removal process
US20110174039A1 (en) * 2008-07-28 2011-07-21 Fabien Roche Method and installation for constructing a layer of amour strips
US9061466B2 (en) * 2008-07-28 2015-06-23 Technip France Method and installation for constructing a layer of armour strips
CN103594208A (zh) * 2013-11-22 2014-02-19 江苏美电电工机械科技有限公司 双带联锁铠装机
CN103594208B (zh) * 2013-11-22 2016-04-20 江苏美电电工机械科技有限公司 双带联锁铠装机
CN104944232A (zh) * 2014-03-25 2015-09-30 合肥神马科技集团有限公司 一种锁扣铠装机及其导带换向成型装置
CN104944232B (zh) * 2014-03-25 2017-01-25 合肥神马科技集团有限公司 一种锁扣铠装机及其导带换向成型装置
CN104944230B (zh) * 2014-03-25 2017-01-25 合肥神马科技集团有限公司 一种锁扣铠装机
CN106486214A (zh) * 2015-08-28 2017-03-08 合肥神马科技集团有限公司 一种摇篮式成缆机及其预扭角度调整装置
CN106486214B (zh) * 2015-08-28 2018-06-05 合肥神马科技集团有限公司 一种摇篮式成缆机及其预扭角度调整装置
US20190257012A1 (en) * 2018-02-22 2019-08-22 Bartell Machinery Systems, L.L.C. Armouring machine assembly with an adjustable guide plate
WO2019165059A1 (en) * 2018-02-22 2019-08-29 Bartell Machinery Systems, L.L.C. Armouring machine assembly with an adjustable guide plate
CN111936246A (zh) * 2018-02-22 2020-11-13 巴特尔机械系统有限公司 具有可调节导向板的铠装机组件
CN110379558A (zh) * 2019-06-18 2019-10-25 芜湖航天特种电缆厂股份有限公司 带状电缆用线芯牵引拉伸装置

Also Published As

Publication number Publication date
FR2196511B1 (it) 1977-02-25
JPS4985329A (it) 1974-08-15
DE2340833A1 (de) 1974-02-28
CA1007840A (en) 1977-04-05
IT994600B (it) 1975-10-20
FR2196511A1 (it) 1974-03-15
BR7306194D0 (pt) 1974-06-27
GB1390890A (en) 1975-04-16

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Owner name: ANACONDA-ERICSSON INC., A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ANACONDA COMPANY, THE A CORP. OF DE;REEL/FRAME:003846/0822

Effective date: 19800728

Owner name: ANACONDA-ERICSSON INC., A CORP. OF, DELAWARE

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Effective date: 19800728

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Effective date: 19900924