Patent US3178992A successfully refreshed from Google Patents.
US3178992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiometer distinguishing against spurious signals
Assignee: Barnes Engineering Co
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Filing: 1960-07-25
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Granted: 1965-04-20
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 James L Murphy
- 👤 Jankowitz Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:36
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/781
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A CHOPPED RADIATION RADIOMETER WHICH COMPRISES IN COMBINATION AND IN OPTICAL ALIGNMENT A DETECTOR, A ROTATABLE CHOPPER OF THE REPETITIVE PATTERN TYPE AND COLLECTING OPTICS FOR IMAGING RADIATION ON THE PLANE OF THE CHOPPER, THE IMPROVEMENT WHICH COMPRISES, (A) AN AXIS OF ROTATION OF THE CHOPPER PARALLEL TO THE OPTIC AXIS OF THE RADIOMETER, (B) THE CHOPPER COMPRISING A DISC RETICLE WITH RADIAL BARS THE WIDTH OF WHICH VARIES FROM THE CENTER TO THE PERIPHERY OF THE DISC, (C) FINELY ADJUSTABLE MEANS FOR MOVING THE AXIS OF ROTATION OF THE RETICLE AT RIGHT ANGLES TO THE OPTIC AXIS OF THE RADIOMETER TO DIFFERENT FIXED POSITIONS WHEREBY THE RELATIVE SIZE OF IMAGE AND BAR PATTERN IS CHANGED AND THE RADIOMETER MAY BE ADJUSTED TO MINIMIZE SIGNAL FROM BACKGROUNDS WITHOUT REDUCING SIGNALS FROM TARGETS WITHIN ITS FIELD OF VIEW SMALL IN COMPRESSION TO BAR SIZE.
Claim 2
Dependent Claim
144 words
IN A CHOPPED RADIATION RADIOMETER WHICH COMPRISES IN COMBINATION AND IN OPTICAL ALIGNMENT A DETECTOR, A ROTATABLE CHOPPER OF THE REPETITIVE PATTERN TYPE AND COLLECTING OPTICS FOR IMAGING RADIATION ON THE PLANE OF THE CHOPPER, THE IMPROVEMENT WHICH COMPRISES, (A) AN AXIS OF ROTATION OF THE CHOPPER PARALLEL TO THE OPTIC AXIS OF THE RADIOMETER, (B) THE CHOPPER COMPRISING A DISC RETICLE WITH RADIAL BARS THE WIDTH OF WHICH VARIES FROM THE CENTER TO THE PERIPHERY OF THE DISC, (C) FINELY ADJUSTABLE MEANS FOR MOVING THE AXIS OF ROTATION OF THE RETICLE AT RIGHT ANGLES TO THE OPTIC AXIS OF THE RADIOMETER TO DIFFERENT FIXED POSITIONS WHEREBY THE RELATIVE SIZE OF IMAGE AND BAR PATTERN IS CHANGED AND THE RADIOMETER MAY BE ADJUSTED TO MINIMIZE SIGNAL FROM BACKGROUNDS WITHOUT REDUCING SIGNALS FROM TARGETS WITHIN ITS FIELD OF VIEW SMALL IN COMPRESSION TO BAR SIZE.
References Cited (Backward Citations)
FR866399A
Cited
US2906883A
Cited
US2930894A
Cited
US2917967A
Cited
US2892124A
Cited
US2942118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |