US4100003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for preforming metal overlap edge with overlap die
Assignee: AT&T Inc
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Filing: 1976-10-20
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Granted: 1978-07-11
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Expires: 1996-10-20
Abstract
Abstract The invention relates to the formation of a metallic shield about a cable core to provide a substantially circular configuration of the shield around the core with an overlapped edge portion of the shield being preformed. The shield is first partially formed about the cable core and thereafter the shield is formed in the substantially circular configuration around the cable core while a portion of the overlying longitudinal edge portion of the shield at the overlap is turned inwardly toward the cable core sufficiently to preclude the edge portion of the shield from protruding disadvantageously into a jacket which is subsequently extruded over the shielded cable core.
Inventors
- 👤 Kenneth Paul Trusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:16
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/22; H01B13/26; H01B13/2613; H01B13/262
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
A method of forming a metallic shield about a cable core to provide a preformed overlap of the shield, which includes the steps of, forming the shield partially about the cable core, passing the partially formed shield and cable core through an overlap and forming die to form the shield about the cable core and to provide the shield with a substantially circular configuration with the longitudinal edge portions of the shield forming an overlap, while at the same time, guiding the longitudinal edge portions of the shield to cause at least a portion of the overlying longitudinal edge portion of the shield at the overlap to be turned inwardly toward the cable core a distance sufficiently to preclude the edge portion of the shield from protruding into a subsequently extruded jacket over the formed shield.
Claim 2
Independent Claim
136 words
A method of forming a metallic shield about a cable core to provide a preformed overlap of the shield, which includes the steps of, forming the shield partially about the cable core, passing the partially formed shield and cable core through an overlap and forming die to form the shield about the cable core and to provide the shield with a substantially circular configuration with the longitudinal edge portions of the shield forming an overlap, while at the same time, guiding the longitudinal edge portions of the shield to cause at least a portion of the overlying longitudinal edge portion of the shield at the overlap to be turned inwardly toward the cable core a distance sufficiently to preclude the edge portion of the shield from protruding into a subsequently extruded jacket over the formed shield.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein the step of forming the shield partially about the core includes forming the shield in a substantially U-shaped configuration about the core.
Claim 4
Dependent Claim
123 words
Apparatus for forming a metallic shield about a cable core to provide a preformed edge of the shield, which includes, means for forming the shield partially about the cable core, means for forming the shield around the cable core with a substantially circular configuration with the longitudinal edge portions of the shield forming an overlap, and means for guiding longitudinal edge portions of the shield while said last means is forming the circular configuration with overlap, to cause at least a portion of the overlying longitudinal edge portion of the shield at the overlap to be turned inwardly toward the cable core a distance sufficiently to preclude the edge portion of the shield from protruding into a subsequently extruded jacket over the shield.
Claim 5
Dependent Claim
123 words
Apparatus for forming a metallic shield about a cable core to provide a preformed edge of the shield, which includes, means for forming the shield partially about the cable core, means for forming the shield around the cable core with a substantially circular configuration with the longitudinal edge portions of the shield forming an overlap, and means for guiding longitudinal edge portions of the shield while said last means is forming the circular configuration with overlap, to cause at least a portion of the overlying longitudinal edge portion of the shield at the overlap to be turned inwardly toward the cable core a distance sufficiently to preclude the edge portion of the shield from protruding into a subsequently extruded jacket over the shield.
Claim 6
Dependent Claim
27 words
The apparatus of claim 3, wherein the means for forming the shield partially about the core includes means for forming the shield in a substantially U-shaped configuration.
Claim 7
Dependent Claim
43 words
The apparatus of claim 3 wherein said second and third means include an overlap and forming die which is provided with a forming insert which extends from the entrance end of said die in a direction toward the exit end of said die.
Claim 8
Dependent Claim
48 words
The apparatus of claim 3 wherein said second and third means include an overlap and forming die which is provided with a forming insert which extends from a position a distance from the entrance end of said die in a direction toward the exit end of said die.
Claim 9
Dependent Claim
54 words
The apparatus of claim 3 wherein said second and third means includes an overlap and forming die which is provided with a forming insert for causing the longitudinal overlying edge portion of the shield to be turned toward the cable core, and also for causing the longitudinal edge portions of the shield to overlap.
Claim 10
Dependent Claim
53 words
The apparatus of claim 7 wherein the insert is provided with a guideway which has one end open and which slants in a direction of the open end toward the cable core for causing the portion of the overlying longitudinal edge portion of the shield to be turned inwardly toward the cable core.
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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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |