Patent US3748535A successfully refreshed from Google Patents.
US3748535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water cooled direct buried electrical equipment
Assignee: Cooper Power Acquisition Corp
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Filing: 1972-01-03
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Granted: 1973-07-24
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Expires: 1992-01-03
Abstract
Abstract An apparatus for attracting or drawing water toward the surface of a direct buried enclosure for electrical equipment, the enclosure having an electrically conductive outer surface connected to a source of DC potential within the enclosure and a ground rod connected to the neutral of the electrical system and buried in a spaced relation to the enclosure, the surface of the enclosure being anodic with respect to the ground rod whereby water in the vicinity of the ground rod will be attracted toward the surface of the enclosure.
Inventors
- 👤 R Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:51
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/10; H01F27/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
An apparatus for aiding in cooling electrical equipment buried in the ground within an enclosure, said apparatus comprising, means for providing an anode on the surface of said enclosure, means for providing a cathode in the ground in a spaced relation to said enclosure, and means for establishing a direct current potential between said anode and cathode.
Claim 2
Independent Claim
57 words
An apparatus for aiding in cooling electrical equipment buried in the ground within an enclosure, said apparatus comprising, means for providing an anode on the surface of said enclosure, means for providing a cathode in the ground in a spaced relation to said enclosure, and means for establishing a direct current potential between said anode and cathode.
Claim 3
Dependent Claim
18 words
The apparatus according to claim 1 wherein said anode means comprises an electrically conductive surface on said enclosure.
Claim 4
Dependent Claim
29 words
The apparatus according to claim 1 wherein said cathode means comprises a plurality of ground rods connected to said grounding system and spaced about the circumference of said enclosure.
Claim 5
Dependent Claim
31 words
The apparatus according to claim 1 wherein said direct current potential establishing means comprises an electric circuit of a transformer and a rectifier connected between said grounding system and said surface.
Claim 6
Dependent Claim
43 words
The apparatus according to claim 1 wherein said anode means includes an electrically conductive coating on the outer surface of said enclosure and said cathode means comprises a plurality of ground rods buried in the ground in a spaced relation to said enclosure.
Claim 7
Dependent Claim
32 words
The apparatus according to claim 5 wherein said means for establishing a direct current potential comprises an electrical circuit within said enclosure electrically connected to said coating and to said grounding system.
Claim 8
Dependent Claim
24 words
The apparatus according to claim 6 wherein said electric circuit includes a transformer and a rectifier for impressing a positive potential on said surface.
Claim 9
Dependent Claim
29 words
The system according to claim 1 wherein said enclosure is formed from porcelain and said electrically conductive surface comprises a graphite coating on the outer surface of said procelain.
Claim 10
Independent Claim
92 words
An apparatus for cooling an enclosure for a high voltage transformer, the transformer having a primary coil electrically connected to a high voltage cable and a secondary coil electrically connected to a service cable, said apparatus including an electrically conductive surface on said enclosure, an electrically conductive member connected to the grounding system for said high voltage cable and being buried in a spaced relation to said enclosure, and an electric circuit means connected to said surface and said member for establishing a direct current potential between said surface and said member.
Claim 11
Independent Claim
92 words
An apparatus for cooling an enclosure for a high voltage transformer, the transformer having a primary coil electrically connected to a high voltage cable and a secondary coil electrically connected to a service cable, said apparatus including an electrically conductive surface on said enclosure, an electrically conductive member connected to the grounding system for said high voltage cable and being buried in a spaced relation to said enclosure, and an electric circuit means connected to said surface and said member for establishing a direct current potential between said surface and said member.
Claim 12
Dependent Claim
26 words
The apparatus according to claim 1 wherein said direct current potential means includes a transformer and a rectifier for providing a positive potential on said surface.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |