Patent US4475584A successfully refreshed from Google Patents.
US3558801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof electrical cable and method of making same
Assignee: KM Kabelmetal AG
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Filing: 1969-09-17
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Granted: 1971-01-26
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Expires: 1989-09-17
Abstract
Abstract A 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 and 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
2026-10-25 09:00
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/307; H01B13/00; H01B13/32; H01B13/329; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; H01B7/288; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
13 words
A cable as in claim 1 wherein said swellable particle matter is cellulose.
Claim 2
Dependent Claim
14 words
A cable as in claim 1 whereIn said swellable particle matter is methyl cellulose.
Claim 3
Dependent Claim
30 words
A cable as in claim 1 wherein said synthetic-resin foam comprises pieces of open-cell polyurethane foam, the water-swellable particles being smaller than the cells of said foam and disposed therein.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |