US3314451A - Flexible metallic sheaths for cables - Google Patents

Flexible metallic sheaths for cables Download PDF

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Publication number
US3314451A
US3314451A US309798A US30979863A US3314451A US 3314451 A US3314451 A US 3314451A US 309798 A US309798 A US 309798A US 30979863 A US30979863 A US 30979863A US 3314451 A US3314451 A US 3314451A
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US
United States
Prior art keywords
sheath
indentations
recesses
sheathing
cable
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
US309798A
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English (en)
Inventor
Heupgen Marcel
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.)
Forges et Ateliers de Constructions Electriques de Jeumont SA
Original Assignee
Forges et Ateliers de Constructions Electriques de Jeumont SA
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
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Application granted granted Critical
Publication of US3314451A publication Critical patent/US3314451A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20—Metal tubes, e.g. lead sheaths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B21D15/06—Corrugating tubes transversely, e.g. helically annularly
    • 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
    • H01B13/0009—Apparatus or processes specially adapted for manufacturing conductors or cables for forming corrugations on conductors or cables
    • 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

Definitions

  • This invention relates to electric cables provided with protective, flexible, metallic sheaths.
  • the essential objectof the instant invention is therefore to produce, on the sheaths, deformations with such configuration as to make said sheaths very flexible and which may be obtained by a simple and economical process which would not subject the metal to any abnormal mechanical strain.
  • FIG. 1 represents the undulated cable-sheath
  • FIG. 2 is a straight transversal cross-section of a row of indentations of said sheath
  • FIG. 3 is a transversal section view of the sheath and of portions of embossing members in working position;
  • FIG. 4 represents the profile of a Wheel performing the undulation and its assembling system
  • FIG. 5 represents a transversal section view of different parts of a head of an undulating machine with wheels and embossing teeth being shown disengaged from the sheath.
  • FIGS. 1 and 2 1 represents an insulated cable which can be constituted in many different ways and for this reason it has been represented as a simple cylinder; this cable is protected by a metallic sheath 2 which represents, with relation to its original tubular form, circular, regularly spaced rows A, B, C, D, etc. of a plurality of recesses or indentations, designated by 3, 5, 7 and 9, then by 4, 6, 8 and 10 etc.; although the edge contours of these recesses or identations are rounded, they are represented in FIG. 1 by sharp lines for better clarity. It is seen that the recesses or indentations of the circular rows A, C etc.
  • the indentations disposed in the indicated manner bring into relief projections on the inside of the sheath corresponding on the external surface thereof to undulations the axes whereof entwine the sheath and follow the doubly-helical dotted lines of FIG. 1 to impart to the sheath an embossed aspect.
  • Such a configuration is especially advantageous since on the one hand the cable insulation bears on a rounded surface, thus with no risk of deterioration, and on the other, it enables a free longitudinal flow of an insulating fluid which may be used to fill the cable.
  • FIGURES 1 and 2 there is represented a sheath the recesses of which show an oblong shape produced by the imprint of a rectilinear tooth positioned transversely of the sheath, but it is evident that this invention comprises sheaths having recesses of any other shape, such as hemispherical or the like.
  • FIG. 3 illustrates the principle of such operation.
  • the wheels 12, of which there are eight in number, are fixed to the frame of the machine by means of forked supports 13 in which they freely turn and are regularly positioned around a sheath 2 to be undulated.
  • Their respective median planes pass through the longitudinal axis of the sheath and define between themselves, in the described case, an angle of 45.
  • axles of these wheels are coupled by means of eight bevel gear trains 14 which, for a reason which will be explained later, are arranged to be axially slidable on the axles of said wheels, but maintained geared by means of clamps 15.
  • the wheels 12 are equipped with removable dented rims 16 which are selected according to the dimension and the nature of the sheath to be undulated. The mounting and the adjustment of this equipment is carried out in such a manner that the teeth of adjacent rims 16 are mutually offset angularly.
  • each tooth of a rim is facing the clearance between teeth of the neighbouring rims. Furthermore, the number of teeth is chosen so that with the desired penetration the sheath 2 will always be in gear with at least one set of the dented rims 16.
  • the longitudinal profile of the teeth may be rectilinear or curvilinear.
  • the wheels 12 must be simultaneously engaged or disengaged from the sheath by their simultaneous displacement in their respective planes.
  • the head to be undulated is provided with forked supports 13 the bases of which are either hinged in suitable manner or are displaceable in the radial slots of a fixed plate.
  • FIGS. 4 and 5 illustrate an example of this latter embodiment.
  • the base of the forked supports 13 comprises at its extremity a threaded bolt 17; this bolt is disposed in slots, directed as will be indicated later, in the juxtaposed plates 19 and 20.
  • the said plates are concentric to both the sheath 2 to be undulated and to the cable 1; the plate 19 is rigidly fixed to the frame of the machine while the plate 20 can be angularly displaced relative to the plate 19.
  • nuts 21 it is possible to lock plate 20 and thus the forked support 13 to the plate .19.
  • the slots 19a and 20a in the respective plates 19 and 20 are show-n in the sector 0 of FIG. 5, which represents a partial sectional view of the undulating head on the plane OP of FIG. 4. It is also shown at 19a that the slots in the plate 19 are radial while the slots 20a of plate 20 are in spiral form.
  • the nuts 21 are loosened, the bolts 17 of the forked supports 13 can be guided simultaneously towards the center 0' or in the opposite direction depending on whether the plate 20 is rotated in one direction or the other by means of handle 22.
  • FIG. 5 represents,.in sector M, a partial sectional view of FIG. 4 in the plan MN; the position of wheels 12, rims 16 and bevel pinions 14
  • the plate 20 is in the position illustrated in sector 0 with relation to plate 19; so that the teeth are disengaged from the sheath.
  • clamp 15 will permit pinions 14 to slide axially on their shafts While remaining keyed for mutual rotation.
  • Flexible tubular metallic cable-sheathing comprising; a series of recesses or indentations on the external surface of the sheathing arranged circumferentially in rows about said sheathing, individual recesses or indentations of each said row being staggered with respect to the individual recesses or indentations of the rows immediately adjacent thereto, said staggering of alternate rows thereby defining undulations between said recesses or indentations, whereby said undulations entwine a cable in doubly-helical fashion to enhance the flexibility of said tubular sheathing over that displayed in a non-indented condition.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
US309798A 1962-09-28 1963-09-18 Flexible metallic sheaths for cables Expired - Lifetime US3314451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR910685A FR1344334A (fr) 1962-09-28 1962-09-28 Câbles à gaine métallique souple et leur procédé de fabrication

Publications (1)

Publication Number Publication Date
US3314451A true US3314451A (en) 1967-04-18

Family

ID=8787645

Family Applications (1)

Application Number Title Priority Date Filing Date
US309798A Expired - Lifetime US3314451A (en) 1962-09-28 1963-09-18 Flexible metallic sheaths for cables

Country Status (8)

Country Link
US (1) US3314451A (ja)
BE (1) BE637247A (ja)
CH (1) CH413022A (ja)
ES (1) ES290698A1 (ja)
FR (1) FR1344334A (ja)
GB (1) GB1004209A (ja)
LU (1) LU44284A1 (ja)
NL (1) NL297018A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685400A (en) * 1969-12-02 1972-08-22 James Z Higa Tool for making flexible crimped tubes from pliable sheet material
US9997277B1 (en) * 2017-06-30 2018-06-12 Chongqing Yufeng Xinxin Wire & Cable Technology Co., Ltd. Indefectible cable and manufacturing process thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111971248B (zh) 2018-01-05 2022-08-05 科拉温股份有限公司 饮料分配器及容器塞

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US176911A (en) * 1876-05-02 Improvement in modes of finishing horseshoe-nail blanks
US344847A (en) * 1886-07-06 William t
US1685518A (en) * 1926-06-17 1928-09-25 William J Burrows Method of making lead cames
US1962876A (en) * 1933-08-14 1934-06-12 Steel & Tubes Inc Pebble finished metal tubing
US2259433A (en) * 1937-11-15 1941-10-14 Hoover Co Heat exchanger
US2265226A (en) * 1936-10-17 1941-12-09 Du Pont Cast resins having integral sheen
US2361318A (en) * 1938-11-21 1944-10-24 Union Metal Mfg Co Tube product
US2640194A (en) * 1948-07-16 1953-05-26 Separator Ab Plate heat exchanger

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US176911A (en) * 1876-05-02 Improvement in modes of finishing horseshoe-nail blanks
US344847A (en) * 1886-07-06 William t
US1685518A (en) * 1926-06-17 1928-09-25 William J Burrows Method of making lead cames
US1962876A (en) * 1933-08-14 1934-06-12 Steel & Tubes Inc Pebble finished metal tubing
US2265226A (en) * 1936-10-17 1941-12-09 Du Pont Cast resins having integral sheen
US2259433A (en) * 1937-11-15 1941-10-14 Hoover Co Heat exchanger
US2361318A (en) * 1938-11-21 1944-10-24 Union Metal Mfg Co Tube product
US2640194A (en) * 1948-07-16 1953-05-26 Separator Ab Plate heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685400A (en) * 1969-12-02 1972-08-22 James Z Higa Tool for making flexible crimped tubes from pliable sheet material
US9997277B1 (en) * 2017-06-30 2018-06-12 Chongqing Yufeng Xinxin Wire & Cable Technology Co., Ltd. Indefectible cable and manufacturing process thereof

Also Published As

Publication number Publication date
CH413022A (fr) 1966-05-15
NL297018A (ja)
FR1344334A (fr) 1963-11-29
ES290698A1 (es) 1963-10-16
GB1004209A (en) 1965-09-15
BE637247A (ja)
LU44284A1 (ja) 1963-10-17

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