US4142509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar collector comprising an evacuated cover
Assignee: US Philips Corp
•
Filing: 1977-08-01
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Granted: 1979-03-06
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Expires: 1997-08-01
Abstract
Abstract A solar collector including at least one evacuated transparent cover tube provided with means for supplying hydrogen to and extracting hydrogen from the cover tube.
Inventors
- 👤 Wilhelm Hermann
- 👤 Horst Horster
- 👤 Johann Schroder
- 👤 Faramarz Mahdjuri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
F; F24; F24S; F24S80/00; F24S80/50; F24S80/54; F24S10/00; F24S10/40; F24S10/45; F24S40/00; F24S40/40; F24S40/46; F24S40/50; F24S50/00; F24S50/40; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S126/00; Y10S126/903; Y10S126/904
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
A solar collector, which comprises an absorber provided with at least one duct for transferring heat, obtained from solar radiation incident on the absorber during operation, to a heat transport medium in the duct, a cover thermally insulating the absorber from the surroundings and consisting of at least one sealed and evacuated transparent tube, and means for supplying hydrogen to and extracting hydrogen from the cover tube.
Claim 2
Dependent Claim
67 words
A solar collector, which comprises an absorber provided with at least one duct for transferring heat, obtained from solar radiation incident on the absorber during operation, to a heat transport medium in the duct, a cover thermally insulating the absorber from the surroundings and consisting of at least one sealed and evacuated transparent tube, and means for supplying hydrogen to and extracting hydrogen from the cover tube.
Claim 3
Dependent Claim
33 words
A solar collector according to claim 1, in which said means comprises a reservoir arranged inside the cover tube and having at least one hydrogen passage and containing a reversible heatable hydrogen getter.
Claim 4
Dependent Claim
28 words
A solar collector according to claim 2, in which the solar collector itself acts as a heat source for the reversible hydrogen getter above a given operating temperature.
Claim 5
Dependent Claim
54 words
A solar collector according to claim 3, in which the reversible hydrogen getter consists of one or more of calcium, niobium, titanium, zirconium, hafnium, scandium, yttrium, lanthanum and the rare earths, alloyed with one or more of vanadium, chromium, manganese, iron, cobalt, nickel, molybdenum, ruthenium, rhodium, palladium and osmium, in a partly hydrogenized condition.
Claim 6
Dependent Claim
18 words
A solar collector according to claim 2, in which the reservoir is provided with an electric heating element.
Claim 7
Dependent Claim
46 words
A solar collector according to claim 5, in that the reversible hydrogen getter consists of a metal selected from titanium, zirconium, hafnium, scandium, yttrium, lanthanum, the rare earths, strontium, barium, vanadium, niobium, tantalum, thorium and alloys and mixtures of these metals, in a partly hydrogenized condition.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |