US3781094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled mirror structure
Assignee: United States Department of the Air Force
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Filing: 1972-09-15
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Granted: 1973-12-25
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Expires: 1992-09-15
Abstract
Abstract A liquid cooled mirror structure having a body, inner plate and face sheet. The body has longitudinal channels therein, the inner plate has narrow channels therein perpendicular to the longitudinal channels and the face sheet has a dense pattern of grooves therein perpendicular to the narrow channels. In operation coolant flows horizontally through the longitudinal channels, vertically through the narrow channels and horizontally through the grooves thereby cooling the face sheet by providing a high intrinsic impedance to the coolant flow, and high specific heat transfer coefficient, with a minimum of pressure drop.
Inventors
- 👤 R Griest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:51
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/18; G02B7/181; G02B7/1815
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
128 words
A liquid cooled structure comprising a body portion, said body portion having a plurality of longitudinal channels therein, a plate fixedly secured to said body, said plate having a plurality of narrow channels therein perpendicular to said longitudinal channels, said narrow channels having entrance and exit ports operatively connected to said longitudinal channels, and a face sheet fixedly secured to said plate, said face sheet providing a plurality of paths therein for the flow of coolant from said channels in said plate, whereby coolant flows horizontally through said longitudinal channels, vertically through said entrance and said exit ports of said narrow channels and horizontally through said paths thereby cooling said face sheet by providing a high intrinsic impedance to said coolant flow with a minimum of pressure drop.
Claim 2
Dependent Claim
128 words
A liquid cooled structure comprising a body portion, said body portion having a plurality of longitudinal channels therein, a plate fixedly secured to said body, said plate having a plurality of narrow channels therein perpendicular to said longitudinal channels, said narrow channels having entrance and exit ports operatively connected to said longitudinal channels, and a face sheet fixedly secured to said plate, said face sheet providing a plurality of paths therein for the flow of coolant from said channels in said plate, whereby coolant flows horizontally through said longitudinal channels, vertically through said entrance and said exit ports of said narrow channels and horizontally through said paths thereby cooling said face sheet by providing a high intrinsic impedance to said coolant flow with a minimum of pressure drop.
Claim 3
Dependent Claim
35 words
A liquid cooled structure as defined in claim 1 in which at least one dimension of the cross-section of said coolant path is in the least practicable ratio to the effective length of said path.
Claim 4
Dependent Claim
24 words
A liquid cooled structure as defined in claim 1 wherein said paths are in the form of a dense pattern of straight parallel grooves.
Claim 5
Dependent Claim
32 words
A liquid cooled structure as defined in claim 3 wherein said narrow channels have a plurality of alternate triangles therein, the small ends of said triangles forming said entrance and exit ports.
Claim 6
Dependent Claim
34 words
A liquid cooled structure as defined in claim 4 wherein said face sheet and said plate are made of the same material and said body is made of another material of matching thermal expansion.
Claim 7
Dependent Claim
18 words
A liquid cooled structure as defined in claim 4 wherein said grooves have an extremely fine square configuration.
Claim 8
Dependent Claim
21 words
A liquid cooled structure as defined in claim 6 wherein said face sheet has a reflective surface on one side thereof.
Claim 9
Dependent Claim
25 words
A liquid cooled structure as defined in claim 6 wherein said triangles are integral with said plate and are formed by a spark erosion technique.
Claim 10
Dependent Claim
21 words
A liquid cooled structure as defined in claim 8 wherein said face sheet has a reflective surface on one side thereof.
Claim 11
Dependent Claim
34 words
A liquid cooled structure as defined in claim 9 wherein said face sheet and said plate are made of the same material and said body is made of another material having matching thermal expansion.
Claim 12
Dependent Claim
121 words
A liquid cooled structure comprising a body portion, said body portion having a plurality of channels therein, a plate fixedly secured to said body, said plate having a plurality of channEls therein in the face opposite said body portion and a plurality of small openings connecting in alternate regular succession said channels in said body portion and said channels in said plate and serving as entrance and exit ports for the flow of liquid coolant into and out of successive adjacent channels in said plate, and a face sheet having a plurality of paths for the flow of coolant, said paths being connected to said channels in the said plate, said paths being parallel to the surface of said face sheet.
Claim 13
Dependent Claim
121 words
A liquid cooled structure comprising a body portion, said body portion having a plurality of channels therein, a plate fixedly secured to said body, said plate having a plurality of channEls therein in the face opposite said body portion and a plurality of small openings connecting in alternate regular succession said channels in said body portion and said channels in said plate and serving as entrance and exit ports for the flow of liquid coolant into and out of successive adjacent channels in said plate, and a face sheet having a plurality of paths for the flow of coolant, said paths being connected to said channels in the said plate, said paths being parallel to the surface of said face sheet.
Claim 14
Dependent Claim
35 words
A liquid cooled structure as defined in claim 11 in which at least one dimension of the cross-section of said coolant path is in the least practicable ratio to the effective length of said path.
Claim 15
Dependent Claim
24 words
A liquid cooled structure as defined in claim 11 wherein said paths are in the form of a dense pattern of straight parallel grooves.
Claim 16
Dependent Claim
32 words
A liquid cooled structure as defined in claim 13 wherein said channels in said plate have a plurality of alternate triangles therein, the small ends of said triangles defining said small openings.
Claim 17
Dependent Claim
34 words
A liquid cooled structure as defined in claim 14 wherein said face sheet and said plate are made of the same material and said body is made of another material of matching thermal operation.
Claim 18
Dependent Claim
18 words
A liquid cooled structure as defined in claim 14 wherein said grooves have an extremely fine square configuration.
Claim 19
Dependent Claim
21 words
A liquid cooled structure as defined in claim 16 wherein said face sheet has a reflective surface on one side thereof.
Claim 20
Dependent Claim
19 words
A liquid cooled structure as defined in claim 4 wherein said grooves are formed by a photo etching technique.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |