US4455998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar collector
Assignee: US Philips Corp
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Filing: 1981-11-13
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Granted: 1984-06-26
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Expires: 2001-11-13
Abstract
Abstract There is provided a solar collector comprising an evacuated transparent envelope having an absorber arranged therewithin. A duct containing a heat-transport medium is arranged at least partially within such envelope and is so associated with the absorber that heat derived from incident solar radiation is transferred to the heat-transport medium in the duct during operation. A reversible heatable hydrogen getter consisting of a partial metal hydride is positioned in the envelope, together with a fully hydrogenized metal hydride thermally more stable and having a higher affinity for oxygen than the partial hydride.
Inventors
- 👤 Wiggert Kroontje
- 👤 Gijsbert Kuus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:25
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; F; F24; F24S; F24S10/00; F24S10/40; F24S10/45; F24S10/90; F24S10/95; F24S40/00; F24S40/40; F24S40/46; F24S40/50; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A solar collector which comprises an evacuated transparent envelope; an absorber arranged within said envelope; a duct arranged at least partially within said envelope and containing a heat-transport medium, said absorber being associated with said duct so as to transfer heat derived from incident solar radiation to the heat-transport medium in said duct during operation; a reversible heatable hydrogen getter positioned in said envelope and consisting of a partial hydride of one or more of titanium, zirconium, hafnium, scandium, yttrium, lanthanum, the rare earths, strontium, barium, vanadium, niobium, tantalum, thorium, and alloys of said metals; and a fully hydrogenized metal hydride also positioned in said envelope and being thermally more stable and having a higher affinity for oxygen than said partial hydride.
Claim 2
Dependent Claim
122 words
A solar collector which comprises an evacuated transparent envelope; an absorber arranged within said envelope; a duct arranged at least partially within said envelope and containing a heat-transport medium, said absorber being associated with said duct so as to transfer heat derived from incident solar radiation to the heat-transport medium in said duct during operation; a reversible heatable hydrogen getter positioned in said envelope and consisting of a partial hydride of one or more of titanium, zirconium, hafnium, scandium, yttrium, lanthanum, the rare earths, strontium, barium, vanadium, niobium, tantalum, thorium, and alloys of said metals; and a fully hydrogenized metal hydride also positioned in said envelope and being thermally more stable and having a higher affinity for oxygen than said partial hydride.
Claim 3
Dependent Claim
34 words
A solar collector according to claim 1, in which the reversible heatable hydrogen getter is a partial hydride of an alloy of niobium and titanium, and the fully hydrogenized metal hydride is zirconium hydride.
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) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |