Patent US4300539A successfully refreshed from Google Patents.
US4300539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar collector
Assignee: Ecosol Materials Inc
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Filing: 1979-11-19
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Granted: 1981-11-17
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Expires: 1999-11-19
Abstract
Abstract A solar collector panel is made from glass fiber reinforced concrete using a dissolvable core of polymer foam to form the internal passageways. The core is dissolved in a solution of solvent and polymer which impregnates and coats the concrete surfaces of the passageways to seal the passageways and to isolate the concrete from the heat transfer fluid.
Inventors
- 👤 Michael J. Dobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:44
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/34; B28B7/342; B28B1/00; B28B1/52; B28B1/522; F; F24; F24S; F24S10/00; F24S10/50; F24S10/502; F24S20/00; F24S20/60; F24S20/64; F24S20/67; F24S80/00; F24S80/30; F24S2080/01; F24S2080/012; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S126/00; Y10S126/906; Y10S165/00; Y10S165/905
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
A solar collector panel comprising a one-piece glass fiber reinforced concrete panel having internal passageways in the form of a plurality of parallel ducts which terminate at one end in an inlet manifold chamber and at the other end in an outlet manifold chamber, the internal passageways being sealed with a hardened polymer coating, said solar collector panel including means to assist in drainage of the heat transfer medium, wherein the fiber reinforced concrete is made from a mix comprising cement and sand, and in addition, includes at least 3% by weight alkalai resistant glass fiber.
Claim 2
Dependent Claim
96 words
A solar collector panel comprising a one-piece glass fiber reinforced concrete panel having internal passageways in the form of a plurality of parallel ducts which terminate at one end in an inlet manifold chamber and at the other end in an outlet manifold chamber, the internal passageways being sealed with a hardened polymer coating, said solar collector panel including means to assist in drainage of the heat transfer medium, wherein the fiber reinforced concrete is made from a mix comprising cement and sand, and in addition, includes at least 3% by weight alkalai resistant glass fiber.
Claim 3
Dependent Claim
12 words
The solar collector panel of claim 1 wherein the polymer is polystyrene.
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |