US3939819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar radiant energy collector
Assignee: University of Dayton
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Filing: 1974-03-29
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Granted: 1976-02-24
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Expires: 1994-03-29
Abstract
Abstract A solar energy collector having a transparent pane(s) with a flowing "black" liquid medium to absorb the solar energy directly. The specific apparatus comprises in a general embodiment a tubing of various planar configuration to provide a flat surface. Alternative embodiments include the free flow of a black liquid over a flat surface. Other structure is described for heat retention and environmental control. The black liquids have a high rate of absorption to solar energy.
Inventors
- 👤 John E. Minardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:29
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/74; F24S10/60; F24S80/00; F24S80/20; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A solar radiant energy collector comprising a source of liquid having a medium dispersed therein with a high absorptance to solar energy, a transparent tube of an extended length wound in a configuration to provide a flat-like planar surface for maximum exposure to solar radiant energy, a reflector surface positioned on the opposite side of said planar surface to that exposed to said solar radiant energy a liquid inlet and outlet joined with said transparent tube; and liquid pressure means to cause said liquid to flow from said inlet through said tube and to said outlet.
Claim 2
Dependent Claim
96 words
A solar radiant energy collector comprising a source of liquid having a medium dispersed therein with a high absorptance to solar energy, a transparent tube of an extended length wound in a configuration to provide a flat-like planar surface for maximum exposure to solar radiant energy, a reflector surface positioned on the opposite side of said planar surface to that exposed to said solar radiant energy a liquid inlet and outlet joined with said transparent tube; and liquid pressure means to cause said liquid to flow from said inlet through said tube and to said outlet.
Claim 3
Dependent Claim
21 words
The solar radiant energy collector of claim 1 wherein said reflecting surface is a sheet-like surface in a heat-loss type enclosure.
Claim 4
Dependent Claim
19 words
The solar radiant energy collector of claim 1 wherein said medium dispersed in said liquid is a colloidal suspension.
Claim 5
Dependent Claim
19 words
The solar radiant energy collector of claim 1 wherein said medium dispersed in said liquid is a carbon black.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |