US1798298A - Pressure-protecting covering for submarine cables - Google Patents

Pressure-protecting covering for submarine cables Download PDF

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Publication number
US1798298A
US1798298A US401911A US40191129A US1798298A US 1798298 A US1798298 A US 1798298A US 401911 A US401911 A US 401911A US 40191129 A US40191129 A US 40191129A US 1798298 A US1798298 A US 1798298A
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US
United States
Prior art keywords
pressure
protecting covering
protecting
submarine cables
covering
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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
US401911A
Inventor
Zapf Georg
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.)
Felten and Guilleaume Carlswerk AG
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Felten and Guilleaume Carlswerk AG
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
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Publication of US1798298A publication Critical patent/US1798298A/en
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    • 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
    • H01B7/14—Submarine cables

Definitions

  • This invention relates to a cable for great sea depths and the object of the invention is to improve the mechanical properties oi? the pressure-protecting coverings hitherto 6 proposed for such cables in order to render them capable of use also for the greatest depths of sea.
  • the means used for increasing the compressive strength also improved the electric prop- 10 erties of the cable.
  • a hollow conducto in the form of tube of profile wires may be rendered more resistant to high pressures by the insertion of a twisted strip or of a supporting core of crossshaped cross-section.
  • this arrangement has the advantage that the cable provided with the pressure-protecting covering still possesses a sufficient flexibility.
  • the invention consists in a pressure-protecting tube having an inner supporting member consisting of a number of separate flat or profile bands which abut against one another radially in the axis of the cable and are stranded together with the profile wires of the pressure-protecting tube.
  • a characteristic of this construction is its increased compressive strength and stability of form.
  • the accompanying drawing illustrates in cross-section a for i of construction in which the supporting Walls consist of bands the width of which is equal to halt the outer diameter of the pressure-protecting covering and which are stranded together with the pressure-protecting covering.
  • a are the supporting walls 6 and c is a two-layer pressureprotecting covering, d is the lead sheathing and 0 the armouring.
  • This form of construction has the advantage, that in addition to increasing the compressive strength, the supporting walls can be used at the same time as means for screening the conductors of the groups of conductors of the cable electrostatically with respect to one another. In this way the use of separate screening means is dispensed with.
  • a pressure-protecting covering for deep sea cables constituted by profile wires and 401,911, and in Germany December 1, 1928.

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Insulated Conductors (AREA)

Description

March 31, 1931.
G. ZAPF,
PRESSURE PROTECTING COVERING FOR SUBMARINE GABLES Filed Oct. 25. 1929 /NVEN Talk Patented Mar. 31, 1931 UNITED STATES PATENT OFFICE GEORG ZAPF, F COLGG-NE, GERMANY,
AF-JEJIGI-FOR TO FELTEI-l' & GUILLEAULIE CARLS- PRESSURE-PROTECTING COVERING FOR SUBIVEARINE CABLES Application filed October 23, 1929, Serial No.
This invention relates to a cable for great sea depths and the object of the invention is to improve the mechanical properties oi? the pressure-protecting coverings hitherto 6 proposed for such cables in order to render them capable of use also for the greatest depths of sea. In some forms of construction the means used for increasing the compressive strength also improved the electric prop- 10 erties of the cable.
A hollow conducto in the form of tube of profile wires may be rendered more resistant to high pressures by the insertion of a twisted strip or of a supporting core of crossshaped cross-section. As compared with a reinforcement of the profile wires for obtain ing the same effect, this arrangement has the advantage that the cable provided with the pressure-protecting covering still possesses a sufficient flexibility.
The invention consists in a pressure-protecting tube having an inner supporting member consisting of a number of separate flat or profile bands which abut against one another radially in the axis of the cable and are stranded together with the profile wires of the pressure-protecting tube. A characteristic of this construction is its increased compressive strength and stability of form.
The accompanying drawing illustrates in cross-section a for i of construction in which the supporting Walls consist of bands the width of which is equal to halt the outer diameter of the pressure-protecting covering and which are stranded together with the pressure-protecting covering. a are the supporting walls 6 and c is a two-layer pressureprotecting covering, d is the lead sheathing and 0 the armouring.
This form of construction has the advantage, that in addition to increasing the compressive strength, the supporting walls can be used at the same time as means for screening the conductors of the groups of conductors of the cable electrostatically with respect to one another. In this way the use of separate screening means is dispensed with.
What I claim is:
1. A pressure-protecting covering for deep sea cables constituted by profile wires and 401,911, and in Germany December 1, 1928.
GEORG ZAPF.
US401911A 1928-12-01 1929-10-23 Pressure-protecting covering for submarine cables Expired - Lifetime US1798298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE338359T 1928-12-01

Publications (1)

Publication Number Publication Date
US1798298A true US1798298A (en) 1931-03-31

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ID=31895007

Family Applications (1)

Application Number Title Priority Date Filing Date
US401911A Expired - Lifetime US1798298A (en) 1928-12-01 1929-10-23 Pressure-protecting covering for submarine cables

Country Status (3)

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US (1) US1798298A (en)
FR (1) FR684813A (en)
GB (1) GB338359A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170047146A1 (en) * 2014-07-18 2017-02-16 Zhongtian Technology Submarine Cable Co., Ltd. Metal sheathed cable designed on the basis of torque balance and design method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738947B1 (en) * 1995-09-15 1997-10-17 Filotex Sa MULTI-PAIR CABLE, SHIELDED PER PAIR AND EASY TO CONNECT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170047146A1 (en) * 2014-07-18 2017-02-16 Zhongtian Technology Submarine Cable Co., Ltd. Metal sheathed cable designed on the basis of torque balance and design method thereof
US9947437B2 (en) * 2014-07-18 2018-04-17 Zhongtan Technology Submarine Cable Co., Ltd. Metal sheathed cable designed on the basis of torque balance and design method thereof

Also Published As

Publication number Publication date
GB338359A (en) 1930-11-20
FR684813A (en) 1930-07-01

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