US5285070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air turbulence detector
Assignee: Honeywell International Inc
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Filing: 1992-04-02
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Granted: 1994-02-08
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Expires: 2012-04-02
Abstract
Abstract Apparatus for remotely sensing changes in the spatial temperature profile of a column of atmospheric air includes (a) collecting means for receiving the thermal radiation from a column of atmospheric air, and for directing it to intensity sensing means; (b) sensing means with a rotatably mounted interference bandpass filter together with means for rotating the filter for sequentially tuning to and sensing the intensity in said column of atmospheric air of at least two spectral regions in the 4.17 to 4.2 μm region of the CO 2 spectral emission band; and (c) means for detecting temporal changes in the relative intensity of the spectral regions.
Inventors
- 👤 Joseph J. Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/60; G01J3/00; G01J3/28; G01J3/42; G01J3/433; G01J2003/4332; G01J5/0014
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
Apparatus for remotely sensing changes in the spatial temperature profile of a column of atmospheric air comprising, in combination: (a) collecting means for receiving the thermal radiation from a column of atmospheric air, and for directing it to intensity sensing means; (b) sensing means for sequentially sensing the intensity in said column of atmospheric air of at least two spectral regions in the 4.17 to 4.2 μm region of the CO 2 spectral emission band, said sensing means comprising an interference bandpass filter mounted for step-wise rotation around an axis in the plane of the filter in combination with means for stepped rotation of said filter adapted to center on said spectral regions; and (c) detecting means for detecting temporal changes in the relative intensity of said spectral regions.
Claim 2
Dependent Claim
129 words
Apparatus for remotely sensing changes in the spatial temperature profile of a column of atmospheric air comprising, in combination: (a) collecting means for receiving the thermal radiation from a column of atmospheric air, and for directing it to intensity sensing means; (b) sensing means for sequentially sensing the intensity in said column of atmospheric air of at least two spectral regions in the 4.17 to 4.2 μm region of the CO 2 spectral emission band, said sensing means comprising an interference bandpass filter mounted for step-wise rotation around an axis in the plane of the filter in combination with means for stepped rotation of said filter adapted to center on said spectral regions; and (c) detecting means for detecting temporal changes in the relative intensity of said spectral regions.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 further comprising signal processing and display means to indicate changes in the temperature profile of the column of atmospheric air.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1 further comprising a blackbody reference source and means for comparing the sensed intensity of said spectral regions against the radiation from said blackbody reference source.
Claim 5
Dependent Claim
25 words
The apparatus of claim 3 further comprising signal processing and display means to indicate changes in the temperature profile of the column of atmospheric air.
Claim 6
Dependent Claim
35 words
The apparatus of claim 3 wherein said means for comparing the sensed intensity comprises means for alternately subjecting said sensing means to the blackbody radiation and the thermal radiation from the column of atmospheric air.
Claim 7
Dependent Claim
25 words
The apparatus of claim 5 further comprising signal processing and display means to indicate changes in the temperature profile of the column of atmospheric air.
References Cited (Backward Citations)
US3402295A
Cited
CH470675A
Cited
US3475963A
Cited
GB1308463A
Cited
US3665467A
Cited
US3780293A
Cited
US4590374A
Cited
US4937447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |