US3604215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laying electrical cable
Assignee: Individual
•
Filing: 1970-01-20
•
Granted: 1971-09-14
•
Expires: 1990-01-20
Abstract
Abstract Means for and method of laying electrical cable underground and providing a high-conductivity environment therefor, consisting of a cable plow machine plus means to fill the excavated tube in which the cable is laid with a conductive mortar under hydraulic pressure. The latter means include a mixer for mixing the loose soil with a conductive aggregate, cement, water, moistureattracting gel and a water reduction admixture and mud jack means for forcing the mortar into the excavated tube under pressure.
Inventors
- 👤 Cletus M Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:25
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/06; E; E02; E02F; E02F5/00; E02F5/02; E02F5/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A method for producing an electrically conductive environment for underground cables comprising the steps of: plowing a tubelike excavation in the earth; laying a bare, conductive cable in said excavation; and simultaneously with said cable laying, filling said excavation with a pressurized, electrically conductive, moistureattracting free-flowing mortar, said mortar encasing said bare cable.
Claim 2
Independent Claim
53 words
A method for producing an electrically conductive environment for underground cables comprising the steps of: plowing a tubelike excavation in the earth; laying a bare, conductive cable in said excavation; and simultaneously with said cable laying, filling said excavation with a pressurized, electrically conductive, moistureattracting free-flowing mortar, said mortar encasing said bare cable.
Claim 3
Independent Claim
63 words
A method for producing an electrically conductive environment for underground cables comprising the steps of: plowing a tubelike excavation in the earth; forming an electrically conductive, moisture-attracting free-flowing mortar including water, moisture-attracting gel, soil and a material having high electrical conductivity; laying a bare, conductive cable in said excavation; and simultaneously with said cable laying, filling said excavation with said mortar under pressure.
Claim 4
Independent Claim
63 words
A method for producing an electrically conductive environment for underground cables comprising the steps of: plowing a tubelike excavation in the earth; forming an electrically conductive, moisture-attracting free-flowing mortar including water, moisture-attracting gel, soil and a material having high electrical conductivity; laying a bare, conductive cable in said excavation; and simultaneously with said cable laying, filling said excavation with said mortar under pressure.
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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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |