US3609206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative cooling system for insulated bus
Assignee: ABB Inc USA
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Filing: 1970-01-30
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Granted: 1971-09-28
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Expires: 1990-01-30
Abstract
Abstract The interior of a hollow elongated bus, which is embedded in insulation material, receives a refrigerant which is vaporized by the heat generated by current flow in the bus. A plurality of vapor conductors extend into the bus at longitudinally spaced locations along the bus and are terminated by a condenser.
Inventors
- 👤 Lorne D Mcconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:27
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; F; F28; F28D; F28D15/00; F28D15/02; F28D15/0266; H02; H02G; H02G5/00; H02G5/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
195 words
A cooling system for an electrical bus comprising: an elongated, hollow bus conductor; thermal insulation material surrounding said bus conductor; a vaporizable liquid contained within said elongated, hollow bus conductor; a first hollow tube extending from a region external of said thermal insulation material, through said insulation material and communicating with the interior of said hollow bus conductor; a condenser means; the end of said first hollow tube at said region external of said thermal insulation material connected to said condenser means; a second hollow tube extending through said insulation material at a region longitudinally spaced from said first hollow tube along the length of said hollow bus conductor; a second condenser means; the end of said second hollow tube which is in a region external of said thermal insulation material connected to said second condenser means; an elongated housing surrounding and radially spaced from said hollow bus conductor, and a high dielectric medium filling the annular space between said elongated housing and said hollow bus conductor; said first and second hollow tubes extending through said elongated housing; and first and second entrance bushings connected between said first and second tubes and said elongated housing.
Claim 2
Dependent Claim
195 words
A cooling system for an electrical bus comprising: an elongated, hollow bus conductor; thermal insulation material surrounding said bus conductor; a vaporizable liquid contained within said elongated, hollow bus conductor; a first hollow tube extending from a region external of said thermal insulation material, through said insulation material and communicating with the interior of said hollow bus conductor; a condenser means; the end of said first hollow tube at said region external of said thermal insulation material connected to said condenser means; a second hollow tube extending through said insulation material at a region longitudinally spaced from said first hollow tube along the length of said hollow bus conductor; a second condenser means; the end of said second hollow tube which is in a region external of said thermal insulation material connected to said second condenser means; an elongated housing surrounding and radially spaced from said hollow bus conductor, and a high dielectric medium filling the annular space between said elongated housing and said hollow bus conductor; said first and second hollow tubes extending through said elongated housing; and first and second entrance bushings connected between said first and second tubes and said elongated housing.
Claim 3
Dependent Claim
13 words
The cooling system of claim 1 wherein said condenser extends above ground level.
Claim 4
Dependent Claim
18 words
The cooling system of claim 1 which includes a capillary wick in said first and second hollow tubes.
Claim 5
Dependent Claim
15 words
The cooling system of claim 1 wherein said elongated housing is buried below ground level.
Claim 6
Dependent Claim
32 words
The cooling system of claim 1 wherein each of said first and second tubes consist of insulation material from at least said first and second entrance bushings to said hollow bus conductor.
Claim 7
Dependent Claim
137 words
A cooling system for an electrical bus comprising: an elongated, hollow bus conductor; thermal insulation material surrounding said bus conductor; a vaporizable liquid contained within said elongated, hollow bus conductor; a first hollow tube extending from a region external of said thermal insulation material, through said insulation material and communicating with the interior of said hollow bus conductor; a condenser means; the end of said first hollow tube at said region external of said thermal insulation material connected to said condenser means; an elongated tube disposed within said hollow bus conductor having at least one nozzle therein; and a compressor means connected between said elongated tube and said condenser means, whereby fluid is expanded through said nozzle and into the interior of said hollow bus conductor, and flows to said compressor means through said first hollow tube.
Claim 8
Dependent Claim
137 words
A cooling system for an electrical bus comprising: an elongated, hollow bus conductor; thermal insulation material surrounding said bus conductor; a vaporizable liquid contained within said elongated, hollow bus conductor; a first hollow tube extending from a region external of said thermal insulation material, through said insulation material and communicating with the interior of said hollow bus conductor; a condenser means; the end of said first hollow tube at said region external of said thermal insulation material connected to said condenser means; an elongated tube disposed within said hollow bus conductor having at least one nozzle therein; and a compressor means connected between said elongated tube and said condenser means, whereby fluid is expanded through said nozzle and into the interior of said hollow bus conductor, and flows to said compressor means through said first hollow tube.
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |