US3763554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire insulation formed from pleated sheet material and method of manufacture
Assignee: AT&T Inc
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Filing: 1971-12-15
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Granted: 1973-10-09
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Expires: 1991-12-15
Abstract
Abstract This disclosure describes process and apparatus for continuous insulating of wires in which sheet material drawn from a roll is pleated and the wires are introduced into the pleats. The pleat envelopes are severed and each assembly of wire and pleat is closed and polished. Advantageously, the sheet material is preselected for specific dielectric and structural characteristics. The sheets may also be precoated with adhesive, and also pre-color coded. The process is capable of high speed operation and produces a highly reliable product without creating air or water pollutants.
Inventors
- 👤 J Early
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:52
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49123; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5138; Y10T29/53; Y10T29/53126
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
Method of making insulated conductors comprising the steps of: forming plural continuous lengthwise accordionlike pleats in an advancing compliant relatively flat sheet of insulative material, severing the sheet along every other lengthwise pleat, thereby creating plural open-sided envelopes, feeding an advancing substantially round wire into the internal region within each said envelope, closing said envelope around said wire by bringing the two sides of each said envelope together, and polishing said envelope into roundness on said wire.
Claim 2
Dependent Claim
27 words
Method pursuant to claim 2, comprising the further step of scoring said advancing sheet, along the lines later to be severed, while said sheet is still flat.
Claim 3
Dependent Claim
34 words
Method pursuant to claim 2, wherein said advancing envelopes are dry up to said feeding step, and comprising the further step of applying a wetting solution to said envelopes prior to said closing step.
Claim 4
Dependent Claim
22 words
Method pursuant to claim 4 wherein said sheet is preimpregnated with wire adhesive, and wherein said wetting step activates said adhesive means.
Claim 5
Dependent Claim
13 words
Method pursuant to claim 2, wherein said sheet is preimpregnated with wire adhesive.
Claim 6
Dependent Claim
65 words
Process for insulating a wire, comprising: folding a compliant sheet of insulative material into consecutive lengthwise pleats; advancing said pleated material continuously, while feeding an advancing substantially round wire into the envelope of all pleats on one side only of said sheet; separating said sheet at every other fold, forming thereby an insulative envelope around each advancing wire, and rounding said envelope around said wire.
Claim 7
Dependent Claim
87 words
In a continuous process for placing insulation around wires, the steps comprising: advancing a compliant sheet of insulating material having formed therein a plurality of lengthwise, open, accordionlike pleats; advancing a wire into a central region between every other pleat at substantially the same speed as said advancing sheet; severing said sheet along each of said every other pleat, thereby creating plural open-sided envelopes within each of which a said wire is disposed; closing each said envelope; and rounding each said envelope around its respective said wire.
Claim 8
Dependent Claim
25 words
Method pursuant to claim 2, wherein said internal region is a central region suBstantially midway between the pleat and the edges of said open side.
Claim 9
Dependent Claim
28 words
Method pursuant to claim 2, wherein said wires prior to said advancing step are precoated with an adhesive to cause the pleated material to adhere to said wire.
Claim 10
Dependent Claim
35 words
Method pursuant to claim 2, wherein said sheet is precolored so as to control the color of the insulative envelope thereby to effect a desired color coding of the insulated conductor produced by said process.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |