Patent US3263561A successfully refreshed from Google Patents.
US3263561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High light reflecting screens
Assignee: Solar Projection Screens Ltd
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Filing: 1963-05-13
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Granted: 1966-08-02
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 James G Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:19
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A LIGHT REFLECTING SCREEN COMPRISING A PLURALITY OF INDIVIDUAL SUBSTANTIALLY RECTANGULAR MAIN REFLECTORS FORMING A REFLECTING SURFACE FOR SAID SCREEN, EACH OF SAID MAIN REFLECTORS BEING CURVED FROM FOUR SIDES THEREOF TOWARDS ITS CENTRE OF THE GENERAL PLANE OF THE REFLECTING SURFACE, EACH OF SAID MAIN REFLECTORS HAVING A SIDE REFLECTOR OF SIMILAR SHAPE AT EACH OF THE FOUR SIDES THEREOF, AND EACH OF SAID SIDE REFLECTORS BEING CURVED OUT OF THE SAID REFLECTING SURFACE PLANE OPPOSITE TO THE MAIN REFLECTOR IN A DIRECTION PERPENDICULAR TO THE ADJACENT SIDE OF SAID MAIN REFLECTOR AND CURVED THE SAME WAY AS THE MAIN REFLECTOR IN A DIRECTION PARALLEL TO SAID ADJACENT SIDE OF THE MAIN REFLECTOR, THE CURVES OF THE MAIN AND SIDE OF THE BEING SUCH THAT THE BOUNDARIES THEREOF FLOW INTO EACH OTHER WITHOUT FLAT OR ABRUPT EDGES AND WITH SUBSTANTIALLY NO WASTE OF REFLECTING SURFACE, EACH SAID SIDE REFLECTOR HAVING A SMALLER RADIUS OF CURVATURE THAN THE MAIN REFLECTOR IN THE SAID DIRECTION PERPENDICULAR TO THE ADJACENT SIDE OF THE MAIN REFLECTOR AND A LENGTH SUBSTANTIALLY EQUAL TO THE LENGTH OF THE SAID ADJACENT SIDE OF THE MAIN REFLECTOR.
Claim 2
Dependent Claim
190 words
A LIGHT REFLECTING SCREEN COMPRISING A PLURALITY OF INDIVIDUAL SUBSTANTIALLY RECTANGULAR MAIN REFLECTORS FORMING A REFLECTING SURFACE FOR SAID SCREEN, EACH OF SAID MAIN REFLECTORS BEING CURVED FROM FOUR SIDES THEREOF TOWARDS ITS CENTRE OF THE GENERAL PLANE OF THE REFLECTING SURFACE, EACH OF SAID MAIN REFLECTORS HAVING A SIDE REFLECTOR OF SIMILAR SHAPE AT EACH OF THE FOUR SIDES THEREOF, AND EACH OF SAID SIDE REFLECTORS BEING CURVED OUT OF THE SAID REFLECTING SURFACE PLANE OPPOSITE TO THE MAIN REFLECTOR IN A DIRECTION PERPENDICULAR TO THE ADJACENT SIDE OF SAID MAIN REFLECTOR AND CURVED THE SAME WAY AS THE MAIN REFLECTOR IN A DIRECTION PARALLEL TO SAID ADJACENT SIDE OF THE MAIN REFLECTOR, THE CURVES OF THE MAIN AND SIDE OF THE BEING SUCH THAT THE BOUNDARIES THEREOF FLOW INTO EACH OTHER WITHOUT FLAT OR ABRUPT EDGES AND WITH SUBSTANTIALLY NO WASTE OF REFLECTING SURFACE, EACH SAID SIDE REFLECTOR HAVING A SMALLER RADIUS OF CURVATURE THAN THE MAIN REFLECTOR IN THE SAID DIRECTION PERPENDICULAR TO THE ADJACENT SIDE OF THE MAIN REFLECTOR AND A LENGTH SUBSTANTIALLY EQUAL TO THE LENGTH OF THE SAID ADJACENT SIDE OF THE MAIN REFLECTOR.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |