Patent US3959660A successfully refreshed from Google Patents.
US3959660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IR generator having ellipsoidal and paraboloidal reflectors
Assignee: Fife Corp
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Filing: 1973-01-29
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Granted: 1976-05-25
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Expires: 1993-01-29
Abstract
Abstract An infrared generator wherein an ellipsoidal reflector has a source rich in infrared radiation at one focus thereof. The end of the reflector at the other focus merges with a paraboloidal reflector positioned so that the focus of the latter reflector coincides with the said other focus of the former. The axes of the reflectors intersect, preferably at right angles to each other.
Inventors
- 👤 Peter Marvin Tolliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21V7/09; G; G01; G01J; G01J3/00; G01J3/02; G01J3/10; G01J3/108; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/255
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
164 words
In an IR generator, the combination of a first shell having an inner reflective ellipsoidal surface and a second shell having an inner reflective paraboloidal surface; said shells being secured together with one focus of said ellipsoidal surface being also the focus of said paraboloidal surface, said surfaces also having their respective major and principal axes intersecting each other; said first shell being adapted for providing a source of radiation at the other focus of said ellipsoidal surface and said shells having openings where they are secured together, for allowing said radiation to enter said second shell via said one focus; said paraboloidal surface being a semiparaboloid, and there being a cylindrical tube containing said second shell; said tube having one of said openings in the side thereof, and said second shell being oriented in said cylinder so that said focus of said paraboloidal surface is at said one of said openings and said principal axis thereof is along the length of said tube.
Claim 2
Dependent Claim
164 words
In an IR generator, the combination of a first shell having an inner reflective ellipsoidal surface and a second shell having an inner reflective paraboloidal surface; said shells being secured together with one focus of said ellipsoidal surface being also the focus of said paraboloidal surface, said surfaces also having their respective major and principal axes intersecting each other; said first shell being adapted for providing a source of radiation at the other focus of said ellipsoidal surface and said shells having openings where they are secured together, for allowing said radiation to enter said second shell via said one focus; said paraboloidal surface being a semiparaboloid, and there being a cylindrical tube containing said second shell; said tube having one of said openings in the side thereof, and said second shell being oriented in said cylinder so that said focus of said paraboloidal surface is at said one of said openings and said principal axis thereof is along the length of said tube.
Claim 3
Dependent Claim
14 words
The invention of claim 1 wherein said axis are substantially perpendicular to each other.
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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |