US4742867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatuses for heat transfer
Assignee: Cape Cod Research Inc
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Filing: 1986-12-01
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Granted: 1988-05-10
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Expires: 2006-12-01
Abstract
Abstract A system for controlling the flow of thermal flux including a heat source and a heat sink being in proximity to each other and an electrochemically variable thermal switch to control transfer of heat therebetween.
Inventors
- 👤 Myles A. Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:39
CPC Classifications
F; F28; F28F; F28F13/00; F28F2013/005; F28F2013/008; Y; Y10; Y10S; Y10S165/00; Y10S165/132; Y10S165/133
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
48 words
A variable thermal switch with a means for controlling heat insulation comprising a surface adapted to face a source of heat, a second surface opposite said first surface and adapted to face a sink for heat, and means for electrochemically producing and removing dendrites positioned between said surfaces.
Claim 2
Dependent Claim
48 words
A variable thermal switch with a means for controlling heat insulation comprising a surface adapted to face a source of heat, a second surface opposite said first surface and adapted to face a sink for heat, and means for electrochemically producing and removing dendrites positioned between said surfaces.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 having in addition external electrical means for electrochemically producing and removing dendrites within said apparatus.
Claim 4
Dependent Claim
14 words
Apparatus according to claim 1 wherein said surfaces comprise foils of metal or graphite.
Claim 5
Dependent Claim
34 words
Apparatus according to claim 1 wherein said means for electrochemically producing and removing dendrites comprises ionomers containing at least one ion selected from the group consisting of hydrogen ions, metal ions and mixtures thereof.
Claim 6
Dependent Claim
69 words
A variable thermal switch with a means for controlling heat insulation comprising a surface adapted to face a source of heat, a second surface opposite said first surface and adapted to face a sink for heat, and means for electrochemically producing and removing dendrites positioned between said surfaces wherein said means for electrochemically producing and removing dendrites comprises a grid for conducting electric current and for supporting electroactive material.
Claim 7
Dependent Claim
69 words
A variable thermal switch with a means for controlling heat insulation comprising a surface adapted to face a source of heat, a second surface opposite said first surface and adapted to face a sink for heat, and means for electrochemically producing and removing dendrites positioned between said surfaces wherein said means for electrochemically producing and removing dendrites comprises a grid for conducting electric current and for supporting electroactive material.
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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |