US4003427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pipe fabrication
Assignee: Grumman Corp
•
Filing: 1974-10-15
•
Granted: 1977-01-18
•
Expires: 1994-10-15
Abstract
Abstract A heat pipe is disclosed which is fabricated with an artery arranged so that the warp and weave of the wire mesh are at about a 45° angle with respect to the axis of the heat pipe.
Inventors
- 👤 Sidney Leinoff
- 👤 Frederick Edelstein
- 👤 Walter Combs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:00
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: 5
Claim 1
Independent Claim
121 words
In a heat pipe having a closed casing, a wall capillary with a vaporizable liquid carried therein, and an axially disposed artery, the improvement which comprises a spirally wound supported artery having at least two wire mesh layers, said wire mesh layers being arranged so that the warp and weave of said wire mesh are at about a 45° angle with respect to the longitudinal axis of said artery, said wire mesh layers being spaced from one another by a plurality of strips of wire mesh spacers that are arranged so that the warp and weave of said strips of wire mesh spacers are substantially parallel to the warp and weave of the wire mesh of said spirally wound supported artery.
Claim 2
Dependent Claim
121 words
In a heat pipe having a closed casing, a wall capillary with a vaporizable liquid carried therein, and an axially disposed artery, the improvement which comprises a spirally wound supported artery having at least two wire mesh layers, said wire mesh layers being arranged so that the warp and weave of said wire mesh are at about a 45° angle with respect to the longitudinal axis of said artery, said wire mesh layers being spaced from one another by a plurality of strips of wire mesh spacers that are arranged so that the warp and weave of said strips of wire mesh spacers are substantially parallel to the warp and weave of the wire mesh of said spirally wound supported artery.
Claim 3
Dependent Claim
24 words
The heat pipe of claim 1 wherein said strips of wire mesh spacers are welded to the wire mesh of said spirally wound artery.
Claim 4
Dependent Claim
14 words
The heat pipe of claim 1 wherein said heat pipe has a straight configuration.
Claim 5
Dependent Claim
14 words
The heat pipe of claim 1 wherein said heat pipe has a curved configuration.
References Cited (Backward Citations)
US3604504A
Cited
US3901311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |