US3703034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making waterproof electrical cable
Assignee: KM Kabelmetal AG
•
Filing: 1970-09-14
•
Granted: 1972-11-21
•
Expires: 1990-09-14
Abstract
Abstract A method of making flexible waterproof electrical communications cable, having a filling disposed between the cable core and the sheath thereof; the filling being constituted of a synthetic resin foam which is of the open cell type; water swellable particle matter being distributed within the cells of the foam.
Inventors
- 👤 Bernd Eilhardt
- 👤 Diethart Pelz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:24
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; H01B7/288; H01B7/2855; Y; Y10; Y10S; Y10S264/00; Y10S264/17; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49123
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
48 words
A method of forming a waterproof cable comprising folding a metal sheath about an electrical cable core to progressively enclose said core, introducing a flexible, open cell synthetic resin foam between said core and said sheath, and distributinG water swellable particle matter in the cells of said foam.
Claim 2
Independent Claim
48 words
A method of forming a waterproof cable comprising folding a metal sheath about an electrical cable core to progressively enclose said core, introducing a flexible, open cell synthetic resin foam between said core and said sheath, and distributinG water swellable particle matter in the cells of said foam.
Claim 3
Dependent Claim
28 words
A method as in claim 1, wherein said foam comprises a mixture of isocyanate solution and a polyol, said water swellable particle matter being premixed with said polyol.
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |