Patent US3204523A successfully refreshed from Google Patents.
US3204523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall periscope
Assignee: Kollmorgen Optical Corp
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Filing: 1960-06-13
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Granted: 1965-09-07
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Expires: 1980-06-13
Abstract
No abstract record available.
Inventors
- 👤 Alan F Daily
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/2476; G02B23/2492
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
IN A WALL PERISCOPE FOR MOUNTING IN A WALL OF A CHAMBER HAVING A VIEWING HEAD DISPOSED WITHIN SAID CHAMBER ADJACENT TO SAID WALL AND INCLUDING A PAIR OF REFLECTING PRISMS, MEANS MOUNTING ONE OF SAID PRISMS FOR ROTATION AROUND A FIRST AXIS, AND MEANS MOUNTING THE OTHER PRISM FOR ROTATION AROUND SAID FIRST AXIS AND A SECOND AXIS AT RIGHT ANGLES TO AND INTERSECTING SAID FIRST AXIS IN THE REFLECTING SURFACE OF SAID ONE PRISM, THE COMBINATION OF AN ANNULAR COLLOR ROTATABLY MOUNTED ON SAID WALL COAXIAL WITH SAID FIRST AXIS OF SAID PRISMS, SEALING MEANS ENGAGING SAID COLLAR AND WALL AND PREVENTING LEAKAGE THEREBETWEEN, SAID COLLAR HAVING AN OUTER INCLINED END LYING IN A PLANE DISPOSED AT AN ACUTE ANGLE TO THE AXIS OF SAID COLLAR, A TRANSPARENT, SEMI-SHPERICAL DOME HAVING A PERIPHERAL EDGE SECURED TO SAID ANNULAR SURFACE IN GAS-TIGHT RELATION THERETO, A PORTION OF SAID PERIPHERAL EDGE BEING CLOSER TO SAID WALL THAN THE INTERSECTION OF THE AXES OF SAID PRISMS, SAID ONE PRISM HAVING ITS ROTATIONAL AXIS SUBSTANTIALLY COAXIAL WITH SAID COLLAR, SAID OTHER PRISM BEING DISPOSED ECCENTRICALLY OF THE CENTER OF CURVATURE OF SAID DOME, AND AN ACHROMATIC DOUBLET COMPENSATGING LENS MOUNTED IN FRONT OF AND MOVABLE WITH SAID OTHER OF SAID PRISMS TO COMPENSATE FOR DISTORTION RESULTING FROM ECCENTRICITY OF SAID PRISM WITH RESPECT TO SAID DOME.
Claim 2
Dependent Claim
224 words
IN A WALL PERISCOPE FOR MOUNTING IN A WALL OF A CHAMBER HAVING A VIEWING HEAD DISPOSED WITHIN SAID CHAMBER ADJACENT TO SAID WALL AND INCLUDING A PAIR OF REFLECTING PRISMS, MEANS MOUNTING ONE OF SAID PRISMS FOR ROTATION AROUND A FIRST AXIS, AND MEANS MOUNTING THE OTHER PRISM FOR ROTATION AROUND SAID FIRST AXIS AND A SECOND AXIS AT RIGHT ANGLES TO AND INTERSECTING SAID FIRST AXIS IN THE REFLECTING SURFACE OF SAID ONE PRISM, THE COMBINATION OF AN ANNULAR COLLOR ROTATABLY MOUNTED ON SAID WALL COAXIAL WITH SAID FIRST AXIS OF SAID PRISMS, SEALING MEANS ENGAGING SAID COLLAR AND WALL AND PREVENTING LEAKAGE THEREBETWEEN, SAID COLLAR HAVING AN OUTER INCLINED END LYING IN A PLANE DISPOSED AT AN ACUTE ANGLE TO THE AXIS OF SAID COLLAR, A TRANSPARENT, SEMI-SHPERICAL DOME HAVING A PERIPHERAL EDGE SECURED TO SAID ANNULAR SURFACE IN GAS-TIGHT RELATION THERETO, A PORTION OF SAID PERIPHERAL EDGE BEING CLOSER TO SAID WALL THAN THE INTERSECTION OF THE AXES OF SAID PRISMS, SAID ONE PRISM HAVING ITS ROTATIONAL AXIS SUBSTANTIALLY COAXIAL WITH SAID COLLAR, SAID OTHER PRISM BEING DISPOSED ECCENTRICALLY OF THE CENTER OF CURVATURE OF SAID DOME, AND AN ACHROMATIC DOUBLET COMPENSATGING LENS MOUNTED IN FRONT OF AND MOVABLE WITH SAID OTHER OF SAID PRISMS TO COMPENSATE FOR DISTORTION RESULTING FROM ECCENTRICITY OF SAID PRISM WITH RESPECT TO SAID DOME.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |