Patent US3913665A successfully refreshed from Google Patents.
US3913665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External tube artery flexible heat pipe
Assignee: Boeing Co
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Filing: 1973-10-01
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Granted: 1975-10-21
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Expires: 1993-10-01
Abstract
Abstract A flexible heat pipe employing external tube arteries in the adiabatic region to transfer the heat pipe working fluid from the wick contained in the condenser portion to the wick contained in the evaporator section.
Inventors
- 👤 James L Franklin
- 👤 John T Pogson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:34
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/0241; F28F; F28F2280/00; F28F2280/10; F28F2280/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
293 words
A heat pipe containing a quantity of fluid and being an airtight enclosure composite structure comprising in combination: a. first enclosure means defining a first space and a second space, said first space containing first internal conductor means for containing and transporting the fluid therethrough as a liquid, said second space being a passageway for containing and transporting the fluid therethrough as a vapor; b. second enclosure means operatively connected to said first enclosure means and having a flexible passageway disposed adjacent to said second space of said first enclosure means so as to allow the fluid to move from said second space of said first enclosure means into said second enclosure means as a vapor; c. third enclosure means comprising a third space and a fourth space operatively connected to said second enclosure means, said third space containing second internal conductor means for containing and transporting the fluid therethrough as a liquid, said fourth space being a passageway disposed adjacent to said second enclosure means so as to allow the fluid to move from said second enclosure means into said fourth space of said third enclosure means as a vapor; and, d. flexible external capillary conduit means operatively connected to said first enclosure means and to said third enclosure means, said flexible external capillary conduit means having its ends disposed adjacent to said first internal conductor means and said second internal conductor means so as to allow the fluid to move from said second internal conductor means to said first internal conductor means through said flexible external capillary conduit means, a portion of said flexible external capillary conduit means being in the shape of a helix, said flexible passageway of said second enclosure means being disposed within the coils of said helix.
Claim 2
Dependent Claim
293 words
A heat pipe containing a quantity of fluid and being an airtight enclosure composite structure comprising in combination: a. first enclosure means defining a first space and a second space, said first space containing first internal conductor means for containing and transporting the fluid therethrough as a liquid, said second space being a passageway for containing and transporting the fluid therethrough as a vapor; b. second enclosure means operatively connected to said first enclosure means and having a flexible passageway disposed adjacent to said second space of said first enclosure means so as to allow the fluid to move from said second space of said first enclosure means into said second enclosure means as a vapor; c. third enclosure means comprising a third space and a fourth space operatively connected to said second enclosure means, said third space containing second internal conductor means for containing and transporting the fluid therethrough as a liquid, said fourth space being a passageway disposed adjacent to said second enclosure means so as to allow the fluid to move from said second enclosure means into said fourth space of said third enclosure means as a vapor; and, d. flexible external capillary conduit means operatively connected to said first enclosure means and to said third enclosure means, said flexible external capillary conduit means having its ends disposed adjacent to said first internal conductor means and said second internal conductor means so as to allow the fluid to move from said second internal conductor means to said first internal conductor means through said flexible external capillary conduit means, a portion of said flexible external capillary conduit means being in the shape of a helix, said flexible passageway of said second enclosure means being disposed within the coils of said helix.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |