Patent US2277518A successfully refreshed from Google Patents.
Patent US4022186A successfully refreshed from Google Patents.
US4022186A
Expired / Lapsed
US
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Compound lens solar energy system
Assignee: Individual
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Filing: 1975-09-10
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Granted: 1977-05-10
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Expires: 1995-09-10
Abstract
Abstract A solar collector includes an elongated heat exchange element onto which the sun's rays are to be directed. A compound concentration lens system is mounted to direct the sun's rays onto the heat exchange element and includes a center refractor extending the length of the element for refracting the sun's rays onto the portion of the surface of the heat exchange element facing the sun. A pair of reflectors extend on each side of the refractor, said reflectors each having a plurality of parallel prisms arranged one above the other for reflection of light onto the sides of the heat exchange element.
Inventors
- 👤 Leonard L. Northrup, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:28
CPC Classifications
F; F24; F24S; F24S23/00; F24S23/30; F24S23/31; F24S23/70; F24S2023/87; F24S2023/878; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A solar collector comprising: an elongated heat exchange element onto which the sun's rays are to be directed, a compound concentration lens system mounted to direct sun's rays onto said element and formed of a center refractor extending the length of said element to refract sun's rays onto the surface of said element facing the sun, and a pair of reflectors extending the length of said element, one on each side of said refractor, said reflectors each having a plurality of parallel prisms arranged one above the other for reflection of light onto the sides of said element.
Claim 2
Dependent Claim
98 words
A solar collector comprising: an elongated heat exchange element onto which the sun's rays are to be directed, a compound concentration lens system mounted to direct sun's rays onto said element and formed of a center refractor extending the length of said element to refract sun's rays onto the surface of said element facing the sun, and a pair of reflectors extending the length of said element, one on each side of said refractor, said reflectors each having a plurality of parallel prisms arranged one above the other for reflection of light onto the sides of said element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |