Patent US1810861A successfully refreshed from Google Patents.
US3112355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide-angle catoptric system
Assignee: Individual
•
Filing: 1959-11-03
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Granted: 1963-11-26
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Expires: 1979-11-03
Abstract
No abstract record available.
Inventors
- 👤 Karl F Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:24
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/02; G02B17/06; G02B17/0647; G02B17/0652; G02B17/0663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN OPTICAL SYSTEM COMPRISING A CONCAVE MIRROR OF CIRCULARLY ARCUATE CROSS SECTION AND A CONVEX MIRROR WITH A REFLECTING SURFACE OF NON-CIRCULAR CROSS SECTION COPLANAR WITH SAID ARCUATE CROSS SECTION, SAID NON-CIRCULAR CROSS SECTION AT DIFFERENT SUBSTANTIALLY PARABOLIC POINTS OSCULATING DIFFERENT CONIC SECTIONS WHOSE FOCAL POINTS LIE ON A COMMON HYPERBOLA REPRESENTING THE IMAGE OF A STRAIGHT LINE AS REFLECTED BY SAID CONCAVE MIRROR, SAID CROSS SECTIONS HAVING A COMMON AXIS PERPENDICULAR TO SAID STRAIGHT LINE, THE LINES INTERCONNECTING THE POINTS OF SAID NON-CIRCULAR CROSS SECTION WITH THE FOCAL POINTS OF THE CORRESPONDING CONIC SECTIONS SUBSTANTIALLY INTERSECTING ONE ANOTHER AT A COMMON POINT LOCATED ON SAID AXIS IN THE VICINITY OF SAID STRAIGHT LINE, SAID NON-CIRCULAR CROSS SECTION OSCULATING A CIRCLE IN THE VICINITY OF SAID AXIS AND EXTENDING OUTWARDLY FROM SAID AXIS FOR AN APPRECIABLE DISTANCE BEYOND THE REGION OF OSCULATION WITH SAID CIRCLE.
Claim 2
Dependent Claim
145 words
AN OPTICAL SYSTEM COMPRISING A CONCAVE MIRROR OF CIRCULARLY ARCUATE CROSS SECTION AND A CONVEX MIRROR WITH A REFLECTING SURFACE OF NON-CIRCULAR CROSS SECTION COPLANAR WITH SAID ARCUATE CROSS SECTION, SAID NON-CIRCULAR CROSS SECTION AT DIFFERENT SUBSTANTIALLY PARABOLIC POINTS OSCULATING DIFFERENT CONIC SECTIONS WHOSE FOCAL POINTS LIE ON A COMMON HYPERBOLA REPRESENTING THE IMAGE OF A STRAIGHT LINE AS REFLECTED BY SAID CONCAVE MIRROR, SAID CROSS SECTIONS HAVING A COMMON AXIS PERPENDICULAR TO SAID STRAIGHT LINE, THE LINES INTERCONNECTING THE POINTS OF SAID NON-CIRCULAR CROSS SECTION WITH THE FOCAL POINTS OF THE CORRESPONDING CONIC SECTIONS SUBSTANTIALLY INTERSECTING ONE ANOTHER AT A COMMON POINT LOCATED ON SAID AXIS IN THE VICINITY OF SAID STRAIGHT LINE, SAID NON-CIRCULAR CROSS SECTION OSCULATING A CIRCLE IN THE VICINITY OF SAID AXIS AND EXTENDING OUTWARDLY FROM SAID AXIS FOR AN APPRECIABLE DISTANCE BEYOND THE REGION OF OSCULATION WITH SAID CIRCLE.
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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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |