CA1036802A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Powder filling of cables
Assignee: Nortel Networks Ltd
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Filing: 1976-04-05
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Granted: 1978-08-22
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Expires: 1996-04-05
Abstract
Abstract POWDER FILLING OF CABLES ABSTRACT OF THE DISCLOSURE A method and apparatus for continuously producing a multi-stranded powder filled core for a sheathed electric cable, in which the strands are passed in open arrangement through a closed chamber and powder is introduced continu-ously into the chamber in the path of the conductors. That portion of the powder settling in the chamber is recircula-ted and additional powder is fed into the chamber as the powder in the chamber is depleted by filling the core.
Inventors
- 👤 Rama Iyengar
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-30 18:38
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/32; H01B13/321
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
111 words
In a method of continuously producing an electric cable having a plurality of conductors forming a stranded core enclosed in a sheath or jacket, the voids within the sheath or jacket being at least partially filled with pow-der, the steps of: Passing the conductors in spaced lateral relation-ship through a closed chamber and thereafter bringing the conductors together to form said core; introducing powder into the chamber continuously in the path of the conductors; collecting that portion of the powder settling in the chamber and recirculating the settling powder con-tinuously into the chamber; and charging additional powder into the chamber cor-responding to the decrease in the quantity of the settling powder.
Claim 2
Dependent Claim
111 words
In a method of continuously producing an electric cable having a plurality of conductors forming a stranded core enclosed in a sheath or jacket, the voids within the sheath or jacket being at least partially filled with pow-der, the steps of: Passing the conductors in spaced lateral relation-ship through a closed chamber and thereafter bringing the conductors together to form said core; introducing powder into the chamber continuously in the path of the conductors; collecting that portion of the powder settling in the chamber and recirculating the settling powder con-tinuously into the chamber; and charging additional powder into the chamber cor-responding to the decrease in the quantity of the settling powder.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1 in which the pow-der is blown into the chamber in a direction to impinge on the conductors passing therethrough.
Claim 4
Dependent Claim
31 words
A method as claimed in claim 1 including the step of applying a coating of oil to the laterally spaced conductors prior to the entry of the conductors into the chamber.
Claim 5
Dependent Claim
18 words
A method as claimed in claim 1 in which the pow-der introduced into the chamber is electrically charged.
Claim 6
Dependent Claim
21 words
A method as claimed in claim 1 in which the con-ductors on leaving said chamber are closed to form said core.
Claim 7
Dependent Claim
90 words
In a method of continuously producing an electric Cable having an inner sheath and an outer sheath with pow-der interposed between the two sheaths, the steps of: Passing the inner sheathed Cable through a Closed chamber; introducing powder into the chamber continuously in the path of the inner sheathed cable; collecting that portion of the powder settling in the chamber and recirculating the settling powder in the continuous introduction of the powder; and charging additional powder into the chamber cor-responding to the decrease in the quantity of the settling powder.
Claim 8
Dependent Claim
90 words
In a method of continuously producing an electric Cable having an inner sheath and an outer sheath with pow-der interposed between the two sheaths, the steps of: Passing the inner sheathed Cable through a Closed chamber; introducing powder into the chamber continuously in the path of the inner sheathed cable; collecting that portion of the powder settling in the chamber and recirculating the settling powder in the continuous introduction of the powder; and charging additional powder into the chamber cor-responding to the decrease in the quantity of the settling powder.
Claim 9
Independent Claim
80 words
An apparatus for at least partially filling a sheathed, multi-stranded electrical cable with powder, comprising: a housing having a closed chamber; means to pass a plurality of conductors in spaced lateral relationship through the chamber; means to introduce powder into the chamber in the path of the conductors; means to recirculate that portion of the powder settling in the chamber; and means to charge additional powder into the cham-ber corresponding to the decrease in the quantity of the settling powder.
Claim 10
Independent Claim
80 words
An apparatus for at least partially filling a sheathed, multi-stranded electrical cable with powder, comprising: a housing having a closed chamber; means to pass a plurality of conductors in spaced lateral relationship through the chamber; means to introduce powder into the chamber in the path of the conductors; means to recirculate that portion of the powder settling in the chamber; and means to charge additional powder into the cham-ber corresponding to the decrease in the quantity of the settling powder.
Claim 11
Dependent Claim
42 words
An apparatus as claimed in claim 7 in which the means to introduce the powder into the chamber comprises a chute opening into the upper portion thereof, impeller means to direct the powder through the chute, and means to drive the impeller.
Claim 12
Dependent Claim
36 words
An apparatus as claimed in claim 8 in which the means to recirculate the powder comprises a first screw conveyor constructed and arranged to feed powder to the impeller, and means to drive the first conveyor.
Claim 13
Dependent Claim
24 words
An apparatus as claimed in claim 9 in which the impeller and the first screw conveyor are coaxial and have a single drive means.
Claim 14
Dependent Claim
23 words
An apparatus as claimed in claim 8 in which the chute is directed to impinge powder on the conductors pass-ing through the chamber.
Claim 15
Dependent Claim
35 words
An apparatus as claimed in claim 7 in which the means to charge additional powder into the chamber compris-es a hopper having a second screw conveyor therein, and means to drive the second screw conveyor.
Claim 16
Dependent Claim
39 words
An apparatus as claimed in claim 12 including means to sense the variation in the quantity of powder set-tling in the chamber, and means to govern the speed of the second conveyor drive means inversely proportional to said variation.
Claim 17
Dependent Claim
38 words
An apparatus as claimed in claim 13 in which the means to sense the variation in the quantity of powder settling in the chamber comprises means to sense the vari-ation in the torque on the first screw conveyor.
Claim 18
Dependent Claim
29 words
An apparatus as claimed in claim 7 in which the means to pass the conductors through the chamber comprises a layplate and a closing die in opposing walls thereof.
Claim 19
Independent Claim
86 words
An apparatus for producing an electric cable having an inner sheath and an outer sheath with powder interposed between the two sheaths, comprising: a housing having a closed chamber; means to pass the inner sheathed cable through the chamber; means to introduce powder into the chamber in the path of the inner sheathed cable; means to recirculate that portion of the powder settling in the chamber; and means to charge additional powder into the cham-ber corresponding to the decrease in the quantity of the settling powder.
Claim 20
Independent Claim
86 words
An apparatus for producing an electric cable having an inner sheath and an outer sheath with powder interposed between the two sheaths, comprising: a housing having a closed chamber; means to pass the inner sheathed cable through the chamber; means to introduce powder into the chamber in the path of the inner sheathed cable; means to recirculate that portion of the powder settling in the chamber; and means to charge additional powder into the cham-ber corresponding to the decrease in the quantity of the settling powder.
References Cited (Backward Citations)
No citation records indexed.
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