Patent US3776304A successfully refreshed from Google Patents.
US3776304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controllable heat pipe
Assignee: RCA Corp
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Filing: 1972-06-05
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Granted: 1973-12-04
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Expires: 1992-06-05
Abstract
Abstract In a heat pipe comprising three heat-transfer regions, a first capillary structure is disposed at, and extends between, two of the regions; and a second capillary structure, hydrodynamically isolated from the first capillary structure, is disposed at the third region. Thermal switching between the first two regions, one of which serves as the condenser region of the heat pipe, is controlled by a heat flow between the third region and the condenser region.
Inventors
- 👤 V Auerbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:40
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/06; Y; Y10; Y10S; Y10S165/00; Y10S165/132
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
A heat pipe comprising: a. a sealed envelope containing a first chamber in communication with a second chamber; b. said first chamber including two heat-transfer regions in contact with a first capillary structure extending therebetween; c. said second chamber including a third heat-transfer region in contact with a second capillary structure, said second capillary structure being hydrodynamically isolated from said first capillary structure; d. a vaporizable working fluid disposed within said envelope; and e. means for producing a heat flow between said third heattransfer region and one of said other two heat-transfer regions.
Claim 2
Dependent Claim
93 words
A heat pipe comprising: a. a sealed envelope containing a first chamber in communication with a second chamber; b. said first chamber including two heat-transfer regions in contact with a first capillary structure extending therebetween; c. said second chamber including a third heat-transfer region in contact with a second capillary structure, said second capillary structure being hydrodynamically isolated from said first capillary structure; d. a vaporizable working fluid disposed within said envelope; and e. means for producing a heat flow between said third heattransfer region and one of said other two heat-transfer regions.
Claim 3
Dependent Claim
13 words
The heat pipe of claim 1, wherein said means comprises a thermoelectric device.
Claim 4
Dependent Claim
20 words
The heat pipe of claim 1, wherein said third heat-transfer region is thermally insulated from said other two heat-transfer regions.
Claim 5
Dependent Claim
28 words
The heat pipe of claim 3 wherein a first portion of said envelope is made of metal and a second portion thereof is made of glass or ceramic.
Claim 6
Dependent Claim
24 words
The heat pipe of claim 4, wherein said first envelope portion contains said first chamber and said second envelope portion contains said second chamber.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |