Patent US3714981A successfully refreshed from Google Patents.
US3714981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat shield assembly
Assignee: NOREN PROD Inc
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Filing: 1971-02-03
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Granted: 1973-02-06
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Expires: 1991-02-03
Abstract
Abstract The specification and drawing disclose a heat pipe type of heat shield assembly comprising a double walled member positioned to extend between a high temperature area and a low temperature area and having a sealed inner-chamber. The outer face of one of the walls is adapted to face the high temperature area and wick material is positioned in engagement with the entire inner face of the other wall. A portion of the inner face of the wall exposed to the high temperature area is also covered with wick material and the remaining inner surface of the wall is bare. A partition member is positioned within the inner chamber. The partition member extends throughout the bare portion of the outer wall to reduce heat transfer by convection. Cooling fins are connected to the outer wall throughout at least the portion exposed to the lower temperature area.
Inventors
- 👤 D Noren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:34
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A heat shield device comprising: a housing including spaced walls defining a sealed inner chamber adapted to extend between a low temperature area to a high temperature area, said sealed inner chamber being provided with wick material throughout the inner face of the wall facing the low temperature area, the inner face of the wall which faces the high temperature area being bare except throughout those wall portions which face the low temperature area; a vaporizable fluid within said chamber in an amount to substantially completely wet the wick material; said wall portions which face the low temperature area having sufficient heat exchange capability to condense said fluid; and, means for permitting capillary flow of the vaporizable material between the wicks.
Claim 2
Dependent Claim
121 words
A heat shield device comprising: a housing including spaced walls defining a sealed inner chamber adapted to extend between a low temperature area to a high temperature area, said sealed inner chamber being provided with wick material throughout the inner face of the wall facing the low temperature area, the inner face of the wall which faces the high temperature area being bare except throughout those wall portions which face the low temperature area; a vaporizable fluid within said chamber in an amount to substantially completely wet the wick material; said wall portions which face the low temperature area having sufficient heat exchange capability to condense said fluid; and, means for permitting capillary flow of the vaporizable material between the wicks.
Claim 3
Dependent Claim
121 words
A heat shield device comprising: a housing including spaced walls defining a sealed inner chamber adapted to extend between a low temperature area to a high temperature area, said sealed inner chamber being provided with wick material throughout the inner face of the wall facing the low temperature area, the inner face of the wall which faces the high temperature area being bare except throughout those wall portions which face the low temperature area; a vaporizable fluid within said chamber in an amount to substantially completely wet the wick material; said wall portions which face the low temperature area having sufficient heat exchange capability to condense said fluid; and, means for permitting capillary flow of the vaporizable material between the wicks.
Claim 4
Dependent Claim
121 words
A heat shield device comprising: a housing including spaced walls defining a sealed inner chamber adapted to extend between a low temperature area to a high temperature area, said sealed inner chamber being provided with wick material throughout the inner face of the wall facing the low temperature area, the inner face of the wall which faces the high temperature area being bare except throughout those wall portions which face the low temperature area; a vaporizable fluid within said chamber in an amount to substantially completely wet the wick material; said wall portions which face the low temperature area having sufficient heat exchange capability to condense said fluid; and, means for permitting capillary flow of the vaporizable material between the wicks.
Claim 5
Dependent Claim
34 words
The device of claim 1 wherein the interior of said sealed inner chamber includes a baffle adapted to divide said space into two separate chambers at least throughout the area exposed to high temperature.
Claim 6
Dependent Claim
37 words
The device of claim 1 wherein the wall exposed to the high temperature area extends into the low temperature area and is provided with extended heat exchange surface means on the portion in the low temperature area.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |