Patent US3929121A successfully refreshed from Google Patents.
US3929121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heat collector
Assignee: Individual
•
Filing: 1974-08-01
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Granted: 1975-12-30
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Expires: 1994-08-01
Abstract
Abstract A solar heat collector positions a flat lens panel in spaced relation to a collector panel having a plurality of interconnected heat collector elements through which a fluid medium to be heated is circulated. Individual lenses in the panel focus on the individual heat collector elements and dark colored heat collecting partitions therein. Flat Fresnel''s lenses formed in accordance with Fresnel''s reflection formula in inexpensive, transparent, synthetic resin material are preferred.
Inventors
- 👤 Bruce C Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:03
CPC Classifications
F; F24; F24S; F24S23/00; F24S23/30; F24S25/00; F24S25/10; F24S25/70; F24S30/00; F24S30/40; F24S30/45; F24S30/452; F24S2030/10; F24S2030/13; F24S2030/135; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/47; Y10; Y10S; Y10S126/00; Y10S126/907
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
In a solar heat collector having a plurality of heat collecting elements, each of which comprises a round hollow transparent member having spaced flat top and bottom walls with a peripheral wall joining their annular edges, inlet and outlet openings in said peripheral wall, at least one of said inlet and outlet openings tangentially arranged with respect to said peripheral wall, means for circulating fluid to be heated successively through said heat collecting elements and a plurality of light magnifying lenses each of which is arranged in spaced parallel relation to one of said heat collecting elements and spaced with respect thereto a distance equal to the focus depth of light passing through said lens so that said magnified light is at its maximum magnification on said heat collecting element.
Claim 2
Dependent Claim
130 words
In a solar heat collector having a plurality of heat collecting elements, each of which comprises a round hollow transparent member having spaced flat top and bottom walls with a peripheral wall joining their annular edges, inlet and outlet openings in said peripheral wall, at least one of said inlet and outlet openings tangentially arranged with respect to said peripheral wall, means for circulating fluid to be heated successively through said heat collecting elements and a plurality of light magnifying lenses each of which is arranged in spaced parallel relation to one of said heat collecting elements and spaced with respect thereto a distance equal to the focus depth of light passing through said lens so that said magnified light is at its maximum magnification on said heat collecting element.
Claim 3
Dependent Claim
55 words
The improvement in a solar heat collector set forth in claim 1 and wherein a dark colored heat collecting member is disposed transversely in said heat collecting element in spaced relation to said flat top and bottom walls and wherein said lens focuses light at its maximum magnification on said dark colored heat collecting member.
Claim 4
Dependent Claim
28 words
The improvement in a solar heat collector set forth in claim 1 and wherein said tangentially arranged inlet and outlet openings are circumferentially spaced in said peripheral wall.
Claim 5
Dependent Claim
78 words
The improvement in a solar heat collector set forth in claim 2 wherein each of said heat collecting elements is a hollow device with spaced top and bottom walls at least one of which is transparent and at least one of which has an integral peripheral flange joining the other, said heat collecting elements arranged in spaced relation and tubing interconnecting said heat collecting elements in series relation and forming part of said means for circulating said fluid.
Claim 6
Dependent Claim
32 words
The improvement in a solar heat collector set forth in claim 1 and wherein each of said heat collecting elements is substantially smaller in size than each of said lens focused thereon.
Claim 7
Dependent Claim
19 words
The solar heat collector of claim 1 and wherein said lens are Fresnel lens in a flat, transparent material.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |