US3766645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electrical cables
Assignee: KM Kabelmetal AG
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Filing: 1970-10-06
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Granted: 1973-10-23
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Expires: 1990-10-06
Abstract
Abstract A method of making electrical cables having an outer shielding element of thin metal tape; the tape being shaped into tubular form about the cable core and having a longitudinal seam; the seam having marginal tab portions integral with the tape and in face to face contact, the outer edges of the tab portions being metallically integrated to provide electrical conductivity continuously about the circumference thereof and to form a fluid impervious envelope for the core which is resistant to mechanical stresses.
Inventors
- 👤 G Ziemek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/2825; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1016; H01B13/00; H01B13/22; H01B13/26; H01B13/2613; H01B13/2633; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49123
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A method of forming an electrical cable comprising folding a metal tape about a cable core, said tape having a uniform wall thickness not exceeding about 0.30 mm. and a width greater than the circumference of said core, forming the marginal side portions of said folded tape into a pair of contacting tab portions extending radially of said core and having a height of from 4.0 to 8.0 mm., trimming the outer edges of said tab portions to provide freshly cut, oxide free edges, metallically integrating said oxide free edges of said tab portions only, bending said integrated tab portions at the base thereof and throughout the length thereof into contact with an outer surface portion of said tape, and applying a coating of metal adherent synthetic resin to the outer surface of said folded tape and tab portions for mechanically stiffening said tHin metal tape.
Claim 2
Independent Claim
146 words
A method of forming an electrical cable comprising folding a metal tape about a cable core, said tape having a uniform wall thickness not exceeding about 0.30 mm. and a width greater than the circumference of said core, forming the marginal side portions of said folded tape into a pair of contacting tab portions extending radially of said core and having a height of from 4.0 to 8.0 mm., trimming the outer edges of said tab portions to provide freshly cut, oxide free edges, metallically integrating said oxide free edges of said tab portions only, bending said integrated tab portions at the base thereof and throughout the length thereof into contact with an outer surface portion of said tape, and applying a coating of metal adherent synthetic resin to the outer surface of said folded tape and tab portions for mechanically stiffening said tHin metal tape.
Claim 3
Dependent Claim
22 words
A method as in claim 1, wherein said tape is aluminum, and said freshly cut oxide free edges thereof are immediately welded.
Claim 4
Dependent Claim
28 words
A method as in claim 2 and further including the step of applying a jacekting of synthetic resin over said metal adherent resin coating in bonded relation thereto.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |