Patent US3327601A successfully refreshed from Google Patents.
US3327601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focal plane shutter
Assignee: Actron Industries Inc
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Filing: 1965-01-28
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Granted: 1967-06-27
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Fish Edward Vail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:37
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/28; G03B9/32; G03B9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A SHUTTER TO BE REMOVABLY INTERPOSED IN THE PATH OF INCIDENT RADIATION COMPRISING: A FIRST AND A SECOND ROLLER HAVING AXES POSITIONED IN PARALLEL TO ONE ANOTHER; A CURTAIN MEMBER POSITIONED TO MOVE UPON SAID FIRST AND SECOND ROLLERS UPON THE ROTATION THEREOF; ELASTIC MEANS WHOLLY BETWEEN THE ENDS OF SAID CURTAIN MEMBER FOR HOLDING OPPOSITE ENDS OF SAID CURTAIN MEMBER TOGETHER IN A TAUT CONDITION TO DEFINE AN EXPOSURE SLIT THEREBETWEEN; AND MEANS FOR MOVING AT LEAST ONE OF SAID ROLLERS IN A DIRECTION ORTHOGONAL TO ITS AXIS TO INCREASE AND REDUCE THE DISTANCE BETWEEN THE OPPOSITE ENDS OF SAID CURTAIN MEMBER, THEREBY VARYING THE SIZE OF THE EXPOSURE SLIT.
Claim 2
Dependent Claim
111 words
A SHUTTER TO BE REMOVABLY INTERPOSED IN THE PATH OF INCIDENT RADIATION COMPRISING: A FIRST AND A SECOND ROLLER HAVING AXES POSITIONED IN PARALLEL TO ONE ANOTHER; A CURTAIN MEMBER POSITIONED TO MOVE UPON SAID FIRST AND SECOND ROLLERS UPON THE ROTATION THEREOF; ELASTIC MEANS WHOLLY BETWEEN THE ENDS OF SAID CURTAIN MEMBER FOR HOLDING OPPOSITE ENDS OF SAID CURTAIN MEMBER TOGETHER IN A TAUT CONDITION TO DEFINE AN EXPOSURE SLIT THEREBETWEEN; AND MEANS FOR MOVING AT LEAST ONE OF SAID ROLLERS IN A DIRECTION ORTHOGONAL TO ITS AXIS TO INCREASE AND REDUCE THE DISTANCE BETWEEN THE OPPOSITE ENDS OF SAID CURTAIN MEMBER, THEREBY VARYING THE SIZE OF THE EXPOSURE SLIT.
References Cited (Backward Citations)
US2315279A
Cited
US3179029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |