Patent US4320459A successfully refreshed from Google Patents.
Patent US3910253A successfully refreshed from Google Patents.
US3910253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat roof solar heated building
Assignee: Individual
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Filing: 1974-02-19
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Granted: 1975-10-07
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Expires: 1994-02-19
Abstract
Abstract A solar heated building has a substantially flat roof with a substantially horizontal solar heat collector on top. The solar heat collector is of a type known as a shallow pond, or a plurality of shallow ponds, preferably covered by a transparency. The pond-type solar heat collector area is extended out beyond the area of the building itself in an overhanging fashion. A transparent cover over the pond may be air supported, or may have a dome shape or such, to discharge cold rain and increase efficiency for solar heat collection. A plurality of shallow ponds may be arranged in stair-step fashion to increase solar heat collection in winter when the sun is lower in the sky.
Inventors
- 👤 Harry E Thomason
- 👤 Jr Harry Jack Lee Thomason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/10; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
Solar heat collecting apparatus for use on a more-or-less horizontal surface comprising means defining a solar heat collecting pond area, said pond area comprising a plurality of small heat collecting ponds one stepped upwardly from another, means to fill the uppermost pond with liquid until it spills over to fill the pond therebelow, return pipe means for liquid leaving said ponds, fluid conduit means inter-connecting the ponds and return pipe means to permit each pond to drain, means in said return pipe to permit or stop draining as desired, and means to prevent flow from the uppermost pond to the pond therebelow through said conduit means and return pipe.
Claim 2
Dependent Claim
109 words
Solar heat collecting apparatus for use on a more-or-less horizontal surface comprising means defining a solar heat collecting pond area, said pond area comprising a plurality of small heat collecting ponds one stepped upwardly from another, means to fill the uppermost pond with liquid until it spills over to fill the pond therebelow, return pipe means for liquid leaving said ponds, fluid conduit means inter-connecting the ponds and return pipe means to permit each pond to drain, means in said return pipe to permit or stop draining as desired, and means to prevent flow from the uppermost pond to the pond therebelow through said conduit means and return pipe.
Claim 3
Dependent Claim
16 words
Solar heat collecting apparatus as in claim 1 and a transparent member covering said pond area.
Claim 4
Dependent Claim
23 words
Solar heat collecting apparatus as in claim 1 and an additional solar heat collecting pond area adjacent to said first mentioned pond area.
Claim 5
Dependent Claim
18 words
Apparatus as in claim 1 and pump means operable to fill said plurality of ponds periodically as desired.
References Cited (Backward Citations)
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Cited
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |