Patent US1896609A successfully refreshed from Google Patents.
Patent US4921039A successfully refreshed from Google Patents.
US4921039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the protection and thermal conditioning of apparatus in particular electronic apparatus generating heat
Assignee: Individual
•
Filing: 1988-04-21
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Granted: 1990-05-01
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Expires: 2008-04-21
Abstract
Abstract A device for the protection and thermal conditioning of electronic apparatus generating heat consisting of a plurality of conduits in which a thermal carrying fluid flows, disposed in a spiral array structurally independent and with lengths outside the device buried underground at a predetermined depth.
Inventors
- 👤 Alberto Ghiraldi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:12
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20627; H05K7/20654; F; F28; F28D; F28D15/00; F28D15/02; F28D15/0266; F28D15/0275
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
183 words
A device for providing thermal protection for heat generating apparatus such as electronic apparatus, comprising a box form structure defining an ambient adapted to contain heat generating apparatus and a plurality of conduits connected with said box structure, each of said conduits being substantially completely filled with a thermal carrying liquid, each of said conduits forming a continuous loop disposed such that a first length of each conduit extends outside said ambient and a second length of each conduit is disposed inside said ambient, each of said plurality of conduits being independent from the other conduits, said first length of each of said plurality of conduits being immersed in an underground heat reservoir of a substantially constant temperature, said thermal carrying liquid in each of said conduits being adapted to change density without changing phase and to circulate in the respective conduit and through said heat reservoir by natural convection in response to heat generated within said ambient, and the length of each of said conduits inside the ambient being positioned in close proximity to the ceiling of the said box form structure.
Claim 2
Independent Claim
183 words
A device for providing thermal protection for heat generating apparatus such as electronic apparatus, comprising a box form structure defining an ambient adapted to contain heat generating apparatus and a plurality of conduits connected with said box structure, each of said conduits being substantially completely filled with a thermal carrying liquid, each of said conduits forming a continuous loop disposed such that a first length of each conduit extends outside said ambient and a second length of each conduit is disposed inside said ambient, each of said plurality of conduits being independent from the other conduits, said first length of each of said plurality of conduits being immersed in an underground heat reservoir of a substantially constant temperature, said thermal carrying liquid in each of said conduits being adapted to change density without changing phase and to circulate in the respective conduit and through said heat reservoir by natural convection in response to heat generated within said ambient, and the length of each of said conduits inside the ambient being positioned in close proximity to the ceiling of the said box form structure.
Claim 3
Dependent Claim
20 words
A device as per claim 1, characterized by the fact that the said conduit loops are positioned in an array.
Claim 4
Dependent Claim
34 words
A device as per claim 1, characterized by the fact that the first length and the second length of each of said conduit loops have external fins over a major portion of their lengths.
Claim 5
Dependent Claim
36 words
A device as per claim 1, characterized by the fact that the lateral walls of the said box structure are furnished with internal fins projecting into said ambient and external fins projecting into said heat reservoir.
References Cited (Backward Citations)
US854278A
Cited
US2181953A
Cited
DE971999C
Cited
US3168777A
Cited
DE1191901B
Cited
US3461952A
Cited
DE2209938A1
Cited
CH581420A5
Cited
US4009417A
Cited
US4009418A
Cited
US4044396A
Cited
DE2638702A1
Cited
JPS5337938A
Cited
DE2712017A1
Cited
DE2753914A1
Cited
US4293030A
Cited
US4564061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |