Patent US3463398A successfully refreshed from Google Patents.
US3576210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pipe
Assignee: Individual
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Filing: 1969-12-15
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Granted: 1971-04-27
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Expires: 1989-12-15
Abstract
Abstract A heat pipe incorporates a novel wick including a single row of small-diameter rods disposed about the periphery of the heat pipe, each of the rods being wrapped in a spiral spacer wire, a cylindrical fine mesh screen located just inside the single row of rods, and a coarse support screen located just inside the fine mesh screen. A conventional working fluid such as sodium is employed in the heat pipe.
Inventors
- 👤 Donald S Trent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:20
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/04; F28D15/046; F28F; F28F2200/00; F28F2200/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49353
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A heat pipe comprising an elongated cylindrical housing containing a wick consisting of a single row of small-diameter rods disposed about the periphery of the housing, said rods being spaced from each other and from the wall of the housing by wires wrapped spirally around the rods, a cylindrical fine mesh screen located just inside the row of rods, a coarse support screen located just inside the fine mesh screen, said housing containing a low-melting metal as working fluid.
Claim 2
Dependent Claim
79 words
A heat pipe comprising an elongated cylindrical housing containing a wick consisting of a single row of small-diameter rods disposed about the periphery of the housing, said rods being spaced from each other and from the wall of the housing by wires wrapped spirally around the rods, a cylindrical fine mesh screen located just inside the row of rods, a coarse support screen located just inside the fine mesh screen, said housing containing a low-melting metal as working fluid.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |