US4013892A
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: 1977-03-22
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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 at right angles to each other.
Inventors
- 👤 John Charles Udart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:16
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/255
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
In an IR generator, the combination of a first shell having an inner reflective ellipsoidal surface dand a second shell having an inner reflective paraboloidal surface; said shells being secured together with said surfaces' respective major and principal axes transverse to each other; said first shell being adapted for providing a source of radiation at one 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 the other focus of said ellipsoidal surface; said paraboloidal surface being a semiparaboloid, one side of which has a flat plate having one of said openings therein.
Claim 2
Dependent Claim
108 words
In an IR generator, the combination of a first shell having an inner reflective ellipsoidal surface dand a second shell having an inner reflective paraboloidal surface; said shells being secured together with said surfaces' respective major and principal axes transverse to each other; said first shell being adapted for providing a source of radiation at one 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 the other focus of said ellipsoidal surface; said paraboloidal surface being a semiparaboloid, one side of which has a flat plate having one of said openings therein.
Claim 3
Dependent Claim
14 words
The invention of claim 1, wherein said axes are substantially perpendicular to each other.
Claim 4
Dependent Claim
125 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 said surfaces' respective major and principal axes transverse to each other; said first shell being adapted for providing a source of radiation at one 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 the other focus of said ellipsoidal surface; said first shell having its said opening defined by having the end thereof at said one focus truncated, and said second shell being a semiparaboloid having a flat plate to which the last said end is secured.
Claim 5
Dependent Claim
125 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 said surfaces' respective major and principal axes transverse to each other; said first shell being adapted for providing a source of radiation at one 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 the other focus of said ellipsoidal surface; said first shell having its said opening defined by having the end thereof at said one focus truncated, and said second shell being a semiparaboloid having a flat plate to which the last said end is secured.
Claim 6
Dependent Claim
14 words
The invention of claim 3, where said axes are substantially perpendicular to each other.
References Cited (Backward Citations)
US3784836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |