US4141338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar heat absorber
Assignee: Individual
•
Filing: 1975-08-18
•
Granted: 1979-02-27
•
Expires: 1995-08-18
Abstract
Abstract A relatively thin solar heat collector, for solar heat collecting units, having a series of discontinuities in its surface in the form of projections, increasing surface area for absorption and heat transfer.
Inventors
- 👤 George O. G. Lof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:57
CPC Classifications
F; F24; F24S; F24S70/00; F24S70/60; F24S10/00; F24S10/50; F24S10/55; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
In a solar heat collector including a housing having a solar radiation transparent cover with cool air inlet means at one end and heated air outlet means at the opposite end, the improvement comprising: a heat absorbing member comprising a sheet of thin metal formed with a surface generally parallel to and disposed in spaced relation to said transparent cover and arranged for the passage of air at least under said sheet, a series of discontinuities comprising generally rectangular projections formed by depressing said metal facing away from the cover, and a metal planar member disposed below said heat absorbing member with said heat absorbing member mounted by said discontinuities in heat transferring relation with said planar member and with an air passage formed between the heat absorber member and planar member.
Claim 2
Dependent Claim
132 words
In a solar heat collector including a housing having a solar radiation transparent cover with cool air inlet means at one end and heated air outlet means at the opposite end, the improvement comprising: a heat absorbing member comprising a sheet of thin metal formed with a surface generally parallel to and disposed in spaced relation to said transparent cover and arranged for the passage of air at least under said sheet, a series of discontinuities comprising generally rectangular projections formed by depressing said metal facing away from the cover, and a metal planar member disposed below said heat absorbing member with said heat absorbing member mounted by said discontinuities in heat transferring relation with said planar member and with an air passage formed between the heat absorber member and planar member.
Claim 3
Dependent Claim
33 words
In a solar heat collector as defined in claim 1, wherein: said discontinuities comprise projections disposed in spaced lateral rows, the projections of one row being interspaced with the projections of adjacent rows.
Claim 4
Dependent Claim
41 words
In a solar heat collector as defined in claim 1, including: a housing having sides, ends and a bottom, said transparent cover forming the top thereof; and insulation disposed between said heat absorbing radiating member and the bottom of said housing.
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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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |