Patent US3921378A successfully refreshed from Google Patents.
US3921378A
Expired / Lapsed
US
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Cable component screening
Assignee: International Standard Electric Corp
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Filing: 1972-03-14
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Granted: 1975-11-25
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Expires: 1992-03-14
Abstract
Abstract A metal screen is separately wrapped about a number of individual conductors or component groups of a cable using a single wide copper tape in one simultaneous operation. The metal screen tape is passed through a forming die having a number of grooves which shape the tape into a star configuration having radial convolutions forming channels for respective conductors or component groups. The screen tape is then twisted around the components in a continuous operation. This eliminates the need for applying separate tapes to each cable component.
Inventors
- 👤 Lyndon R Spicer
- 👤 Christopher Robert Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:33
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/02; H01B13/0214
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A method of screening each of a plurality of electric cable components from one another and laying up the screened cable components, so formed, into a cable in one continuous operation, comprising the steps of feeding a plurality of individual cable components and an electrically conducting screening material along a longitudinal path, forming a plurality of radial convolutions in said material, guiding said cable components into said convolutions, simultaneously screening the individual cable components from one another by longitudinally applying said material to each individual cable component at the same time, and laying up the plurality of screened cable components.
Claim 2
Independent Claim
100 words
A method of screening each of a plurality of electric cable components from one another and laying up the screened cable components, so formed, into a cable in one continuous operation, comprising the steps of feeding a plurality of individual cable components and an electrically conducting screening material along a longitudinal path, forming a plurality of radial convolutions in said material, guiding said cable components into said convolutions, simultaneously screening the individual cable components from one another by longitudinally applying said material to each individual cable component at the same time, and laying up the plurality of screened cable components.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1, wherein the electrically conducting material is a metallic tape.
Claim 4
Dependent Claim
59 words
A method as claimed in claim 2, wherein each cable component is screened from the others by a single metallic tape and a forming tool having a plurality of radial convolutions, passing said tape through said tool to form said plurality of convolutions in said tape for receiving respective cable components, and wrapping said tape about said cable components.
Claim 5
Dependent Claim
15 words
A method as claimed in claim 3, wherein the metallic tape is a copper tape.
Claim 6
Dependent Claim
120 words
Apparatus for simultaneously screening each of a plurality of electric cable components from one another with longitudinally applied electrically conducting material and laying up the plurality of screened cable components, so formed, in one continuous operation comprising a rotatable frame, a plurality of cable component supply reels carried on said frame, a supply reel of electrically conducting material, all of said supply reels being freely rotatable about their own axes, means for forming a plurality of radial convolutions in said material, means for guiding the cable components into the convolutions, each convolution being adapted to accommodate a respective cable component, and take-up means for pulling the cable components through said forming means to wrap said material about said cable components.
Claim 7
Dependent Claim
120 words
Apparatus for simultaneously screening each of a plurality of electric cable components from one another with longitudinally applied electrically conducting material and laying up the plurality of screened cable components, so formed, in one continuous operation comprising a rotatable frame, a plurality of cable component supply reels carried on said frame, a supply reel of electrically conducting material, all of said supply reels being freely rotatable about their own axes, means for forming a plurality of radial convolutions in said material, means for guiding the cable components into the convolutions, each convolution being adapted to accommodate a respective cable component, and take-up means for pulling the cable components through said forming means to wrap said material about said cable components.
Claim 8
Dependent Claim
46 words
Apparatus according to claim 5, wherein said materiAl is a metallic tape, said forming means including a truncated conical die having radial channels increasing in width and decreasing in depth along the length away from the apex, and means for guiding said tape into said channels.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |