US3229568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concave grating spectrometer
Assignee: Individual
•
Filing: 1962-09-28
•
Granted: 1966-01-18
•
Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/18; G01J3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A SPECTROMETER CAPABLE OF USE IN THE ULTRAVIOTEL REGION COMPRISING: A FIXEDLY MOUNTED CONCAVE GRATING; AN ENTRANCE SLIT POSITIONED ON THE CIRCUMFERENCE OF THE ROWLAND CIRCLE ASSOCIATED WITH SAID GRATING AND LOCATED ADJACENT THE CENTER OF CURVATURE OF THE GRATING FOR PASSAGE OF RADIATION DIRECTLY INCIDENT THEREON; A VIEWING MEANS FOR RADIATION DISPERSED FROM SAID GRATING POSITIONED ON THE CIRCUMFERENCE OF SAID CIRCLE AND LOCATED ADJACENT THE GRATING; A MIRROR LOCATED WITHIN THE CIRCUFERENCE OF SAID CIRCLE AND POSITIONED NORMAL TO THE PLANE THEREOF FOR INTERCEPTING ONLY THE DISPERSED RADIATION FROM THE GRATING AND REFLECTING THIS RADIATION ONTO SAID VIEWING MEANS, THE PLANE OF THE MIRROR REFLECTING SURFACE PASSING THROUGH THE CENTER OF THE CIRCLE; AND MEANS FOR ROTATING SAID MIRROR ABOUT AN AXIS PASSING THROUGH THE CENTER OF SAID CIRCLE, THEREBY MOVING THE SPECTRUM OF SAID DISPERSED RADIATION ACROSS SAID VIEWING MEANS.
Claim 2
Dependent Claim
143 words
A SPECTROMETER CAPABLE OF USE IN THE ULTRAVIOTEL REGION COMPRISING: A FIXEDLY MOUNTED CONCAVE GRATING; AN ENTRANCE SLIT POSITIONED ON THE CIRCUMFERENCE OF THE ROWLAND CIRCLE ASSOCIATED WITH SAID GRATING AND LOCATED ADJACENT THE CENTER OF CURVATURE OF THE GRATING FOR PASSAGE OF RADIATION DIRECTLY INCIDENT THEREON; A VIEWING MEANS FOR RADIATION DISPERSED FROM SAID GRATING POSITIONED ON THE CIRCUMFERENCE OF SAID CIRCLE AND LOCATED ADJACENT THE GRATING; A MIRROR LOCATED WITHIN THE CIRCUFERENCE OF SAID CIRCLE AND POSITIONED NORMAL TO THE PLANE THEREOF FOR INTERCEPTING ONLY THE DISPERSED RADIATION FROM THE GRATING AND REFLECTING THIS RADIATION ONTO SAID VIEWING MEANS, THE PLANE OF THE MIRROR REFLECTING SURFACE PASSING THROUGH THE CENTER OF THE CIRCLE; AND MEANS FOR ROTATING SAID MIRROR ABOUT AN AXIS PASSING THROUGH THE CENTER OF SAID CIRCLE, THEREBY MOVING THE SPECTRUM OF SAID DISPERSED RADIATION ACROSS SAID VIEWING MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |