Patent US3117489A successfully refreshed from Google Patents.
US3117489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image projector with air circulating means
Assignee: American Optical Corp
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Filing: 1960-10-14
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Granted: 1964-01-14
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Expires: 1980-10-14
Abstract
No abstract record available.
Inventors
- 👤 Henry T Wilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
AN IMAGE PROJECTION MACHINE COMPRISING, A SUBSTANTIALLY AIR TIGHT HOUSING HAVING BOTTOM, SIDE AND TOP WALL PORTIONS, AN AIR INLET PORT IN SAID HOUSING, A PLATEN FOR HOLDING COPY TO BE PROJECTED MOUNTED IN SAID HOUSING, A LIGHT SOURCE MOUNTED IN SAID HOUSING TO ILLUMINATE THE AREA OF SAID PLATEN, AIR INDUCTION MEANS MOUNTED BELOW SAID LIGHT SOURCE AND OPERABLE TO DRAW AIR THROUGH SAID INLET PORT AND DIRECT THE SAME UPWARDLY TOWARD SAID LIGHT SOURCE, AN AIR DEFLECTOR MOUNTED IN SAID HOUSING ABOVE SAID LIGHT SOURCE TO CAUSE AIR FLOWING PAST SAID LIGHT SOURCE TO BE DEFLECTED DOWNWARDLY TO IMPINGE AGAINST THE SURFACE OF SAID PLATEN, AND AIR DUCT MEANS EXTENDING ADJACENT THE WALLS OF SAID HOUSING AND HAVING THEIR INTAKE ENDS ADJACENT THE PERIMETER OF SAID PLATEN AND THEIR OUTLET ENDS DISCHARGING TO AN AIR OUTLET PORT FORMED IN A TOP WALL PORTION OF SAID HOUSING.
Claim 2
Dependent Claim
148 words
AN IMAGE PROJECTION MACHINE COMPRISING, A SUBSTANTIALLY AIR TIGHT HOUSING HAVING BOTTOM, SIDE AND TOP WALL PORTIONS, AN AIR INLET PORT IN SAID HOUSING, A PLATEN FOR HOLDING COPY TO BE PROJECTED MOUNTED IN SAID HOUSING, A LIGHT SOURCE MOUNTED IN SAID HOUSING TO ILLUMINATE THE AREA OF SAID PLATEN, AIR INDUCTION MEANS MOUNTED BELOW SAID LIGHT SOURCE AND OPERABLE TO DRAW AIR THROUGH SAID INLET PORT AND DIRECT THE SAME UPWARDLY TOWARD SAID LIGHT SOURCE, AN AIR DEFLECTOR MOUNTED IN SAID HOUSING ABOVE SAID LIGHT SOURCE TO CAUSE AIR FLOWING PAST SAID LIGHT SOURCE TO BE DEFLECTED DOWNWARDLY TO IMPINGE AGAINST THE SURFACE OF SAID PLATEN, AND AIR DUCT MEANS EXTENDING ADJACENT THE WALLS OF SAID HOUSING AND HAVING THEIR INTAKE ENDS ADJACENT THE PERIMETER OF SAID PLATEN AND THEIR OUTLET ENDS DISCHARGING TO AN AIR OUTLET PORT FORMED IN A TOP WALL PORTION OF SAID HOUSING.
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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |