US3254644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosyphon solar heat cell
Assignee: Individual
•
Filing: 1964-04-27
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Granted: 1966-06-07
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Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Fred G Thannhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/74; F24S10/746; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A THERMOSYPHON SOLAR HEAT CELL COMPRISING, MEANS FORMING A CONCAVE CONICAL SURFACE OF REVOLUTION WITH THE SAID CONCAVE CONICAL SURFACE FACING UPWARD, A NONMETALLIC HOSE WITH A LIGHT ABSORBING SURFACE, WOUND SPIRALLY, RESTING ON AND SUPPORTED BY SAID CONCAVE CONICAL SURFACE, IN A FIXED POSITION WITH THE SURFACE OF A REVOLUTION AXIS ADAPTED TO PASS THROUGH THE EARTH''S CENTER, SUCH THAT THE NONMETALLIC HOSE IS ADAPTED TO RECEIVE THE SUN''S RAYS, SAID CONCAVE CONICAL SURFACE HAVING A CONFIGURATION WHICH PRESENTS AT LEAST A PORTION OF SAID LIGHT ABSORBING SURFACE PERPENDICULAR OR TANGENT TO THE SUN''S RAYS DURING THE DAYLIGHT HOURS.
Claim 2
Dependent Claim
100 words
A THERMOSYPHON SOLAR HEAT CELL COMPRISING, MEANS FORMING A CONCAVE CONICAL SURFACE OF REVOLUTION WITH THE SAID CONCAVE CONICAL SURFACE FACING UPWARD, A NONMETALLIC HOSE WITH A LIGHT ABSORBING SURFACE, WOUND SPIRALLY, RESTING ON AND SUPPORTED BY SAID CONCAVE CONICAL SURFACE, IN A FIXED POSITION WITH THE SURFACE OF A REVOLUTION AXIS ADAPTED TO PASS THROUGH THE EARTH''S CENTER, SUCH THAT THE NONMETALLIC HOSE IS ADAPTED TO RECEIVE THE SUN''S RAYS, SAID CONCAVE CONICAL SURFACE HAVING A CONFIGURATION WHICH PRESENTS AT LEAST A PORTION OF SAID LIGHT ABSORBING SURFACE PERPENDICULAR OR TANGENT TO THE SUN''S RAYS DURING THE DAYLIGHT HOURS.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |