US4183351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heat collecting apparatus
Assignee: Sanyo Electric Co Ltd
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Filing: 1978-01-27
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Granted: 1980-01-15
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Expires: 1998-01-27
Abstract
Abstract A solar heat collecting apparatus which may realize improvements in workability in the manufacturing process, easier handling in transporation and installation, and lower manufacturing and handling costs, and which comprises an outer tube of transparent glass, a heat collecting tube disposed therein of which the inside is formed as a passage for a heating medium, and metallic end plates for hermetically closing the space between said heat collecting tube and each of the end open portions of said outer tube, one of said end plates provided with an exhaust tubulure.
Inventors
- 👤 Katsuhiro Hinotani
- 👤 Keiichi Kanatani
- 👤 Masato Osumi
- 👤 Hajime Hayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:01
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/40; F24S10/45; F24S25/00; F24S25/60; F24S2025/6012; F24S2025/6013; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
207 words
A solar heat collecting apparatus comprising: an outer transparent tube having at least one open end; a heat collecting tube having a passage therethrough disposed within said outer tube; an end plate at each of said at least one open ends having a support tube portion affixed at one of its ends to an end plate member portion, each of said end plate member portions arranged transverse to said outer tube, the periphery of each of said end plate member portions hermetically sealed to said outer tube, the inner diameter of each of said support tube portions being sufficiently larger than the outer diameter of said heat collecting tube so that when said collecting tube is disposed within each of said support tube portions a gap exists between said collecting tube and each of said support tube portions, the opposite end of each of said support tube portions being hermetically sealed to said heat collecting tube so that the inner surface of said outer tube, the outer surface of said heat collecting tube and the inner surface of each of said end plates together define a hermetically sealed region; and exhaust means on at least one of said end plates for exhausting and hermetically sealing said region.
Claim 2
Dependent Claim
207 words
A solar heat collecting apparatus comprising: an outer transparent tube having at least one open end; a heat collecting tube having a passage therethrough disposed within said outer tube; an end plate at each of said at least one open ends having a support tube portion affixed at one of its ends to an end plate member portion, each of said end plate member portions arranged transverse to said outer tube, the periphery of each of said end plate member portions hermetically sealed to said outer tube, the inner diameter of each of said support tube portions being sufficiently larger than the outer diameter of said heat collecting tube so that when said collecting tube is disposed within each of said support tube portions a gap exists between said collecting tube and each of said support tube portions, the opposite end of each of said support tube portions being hermetically sealed to said heat collecting tube so that the inner surface of said outer tube, the outer surface of said heat collecting tube and the inner surface of each of said end plates together define a hermetically sealed region; and exhaust means on at least one of said end plates for exhausting and hermetically sealing said region.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein each of said support tube portions comprises a cylinder.
Claim 4
Dependent Claim
16 words
The apparatus of claim 1 wherein each of said end plates comprises a metallic end plate.
Claim 5
Dependent Claim
35 words
The apparatus of claim 1 wherein the periphery of each of said end plate member portions extends substantially parallel to the longitudinal axis of said outer tube along the external surface of said outer tube.
Claim 6
Dependent Claim
31 words
The apparatus of claim 1 wherein said exhaust means comprises an exhaust tubulure located within the range of the outer diameter of said outer tube after said tubulure is sealingly closed.
Claim 7
Dependent Claim
21 words
The apparatus of claim 5 wherein said exhaust tubulure is disposed on at least one of said end plate member portions.
Claim 8
Dependent Claim
20 words
The apparatus of claim 5 wherein said exhaust tubulure is disposed on at least one of said support tube portions.
Claim 9
Dependent Claim
26 words
The apparatus of claim 1 further comprising glass means for hermetically sealing the periphery of each of said end plate member portions to said outer tube.
Claim 10
Dependent Claim
44 words
The apparatus of claim 1 wherein each of said end plate member portions comprises a thin and resilient metallic plate, and each of said support tube portions comprises a thick metallic cylinder, said exhaust means being disposed at one of said support tube portions.
Claim 11
Dependent Claim
30 words
The apparatus of claim 1 wherein each of said end plate member portions comprises a metallic plate having a thermal expansion coefficient substantially equal to that of said outer tube.
Claim 12
Dependent Claim
25 words
The apparatus of claim 1 wherein each said end plate comprises a unitary construction of said end plate member portion and said support tube portion.
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) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |