US3111071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic exposure control devices
Assignee: Bell and Howell Co
•
Filing: 1960-10-06
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Granted: 1963-11-19
•
Expires: 1980-10-06
Abstract
No abstract record available.
Inventors
- 👤 John P Bagby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
IN AN AUTOMATIC EXPOSURE CONTROL DEVICE, ELECTROMOTIVE MEANS, A FIRST DIAPHRAGM BLADE DRIVEN BY THE ELECTRO-MOTIVE MEANS, A SECOND DIAPHRAGM BLADE, MANUALLY OPERABLE MEANS FOR MOVING THE SECOND BLADE, AND INTERENGAGING CAM MEANS CARRIED BY THE BLADES FOR TRAPPING THE SECOND DIAPHRAGM BLADE AT A POINT IN ITS MOVEMENT DETERMINED BY THE POSITION OF THE FIRST DIAPHRAGM BLADE.
Claim 2
Dependent Claim
58 words
IN AN AUTOMATIC EXPOSURE CONTROL DEVICE, ELECTROMOTIVE MEANS, A FIRST DIAPHRAGM BLADE DRIVEN BY THE ELECTRO-MOTIVE MEANS, A SECOND DIAPHRAGM BLADE, MANUALLY OPERABLE MEANS FOR MOVING THE SECOND BLADE, AND INTERENGAGING CAM MEANS CARRIED BY THE BLADES FOR TRAPPING THE SECOND DIAPHRAGM BLADE AT A POINT IN ITS MOVEMENT DETERMINED BY THE POSITION OF THE FIRST DIAPHRAGM BLADE.
Claim 3
Dependent Claim
148 words
IN A SHUTTER DEVICE, A MOUNTING PLATE, A MANUALLY OPERABLE RELEASE PLATE MOVABLE ALONG THE MOUNTING PLATE AND HAVING A LATCHING TAB FORMED THEREON, MEANS URGING THE RELEASE PLATE TO A LATCHING POSITION, A SHUTTER MECHANISM MOUNTED ON THE MOUNTING PLATE, A DRIVING LEVER PIVOTALLY MOUNTED ON THE MOUNTING PLATE FOR DRIVING THE SHUTTER MECHANISM AND HAVING A SHOULDER ADAPTED TO BE LATCHINGLY ENGAGED BY THE LATCHING TAB TO RETAIN THE LEVER IN A COCKED POSITION, THE LEVER ALSO HAVING A NOTCHED PORTION ADAPTED TO LIE IN THE PATH OF A SECOND TAB ON SAID RELEASE PLATE AND PREVENT MOVEMENT OF THE RELEASE PLATE AFTER THE RELEASE PLATE HAS BEEN MOVED FROM ITS LATCHING POSITION TO RELEASE THE LEVER AND RETURNED TO ITS LATCHING POSITION, THE LEVER ALSO HAVING A RECOCKING PORTION, AND MANUALLY OPERABLE MEANS FOR ENGAGING THE RECOCKING PORTION OF THE LEVER TO RECOCK THE LEVER.
Claim 4
Dependent Claim
148 words
IN A SHUTTER DEVICE, A MOUNTING PLATE, A MANUALLY OPERABLE RELEASE PLATE MOVABLE ALONG THE MOUNTING PLATE AND HAVING A LATCHING TAB FORMED THEREON, MEANS URGING THE RELEASE PLATE TO A LATCHING POSITION, A SHUTTER MECHANISM MOUNTED ON THE MOUNTING PLATE, A DRIVING LEVER PIVOTALLY MOUNTED ON THE MOUNTING PLATE FOR DRIVING THE SHUTTER MECHANISM AND HAVING A SHOULDER ADAPTED TO BE LATCHINGLY ENGAGED BY THE LATCHING TAB TO RETAIN THE LEVER IN A COCKED POSITION, THE LEVER ALSO HAVING A NOTCHED PORTION ADAPTED TO LIE IN THE PATH OF A SECOND TAB ON SAID RELEASE PLATE AND PREVENT MOVEMENT OF THE RELEASE PLATE AFTER THE RELEASE PLATE HAS BEEN MOVED FROM ITS LATCHING POSITION TO RELEASE THE LEVER AND RETURNED TO ITS LATCHING POSITION, THE LEVER ALSO HAVING A RECOCKING PORTION, AND MANUALLY OPERABLE MEANS FOR ENGAGING THE RECOCKING PORTION OF THE LEVER TO RECOCK THE LEVER.
References Cited (Backward Citations)
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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) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |