Patent US3072029A successfully refreshed from Google Patents.
US3072029A
Expired / Lapsed
US
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Camera with an exposure meter
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1960-10-20
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Granted: 1963-01-08
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Expires: 1980-10-20
Abstract
No abstract record available.
Inventors
- 👤 Leitz Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:17
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
IN A CAMERA, A PHOTO-ELECTRIC CELL MOUNTED THEREIN, SAID PHOTO-ELECTRIC CELL HAVING MEANS FOR VARYING THE LIGHT RECEIVED THEREBY AND THE RESULTING CURRENT OUTPUT THEREOF, A MEASURING MECHANISM RESPONSIVE TO SAID CURRENT OUTPUT AND HAVING A MOVEABLE POINTER, SAID MEASURING MECHANISM BEING PIVOTALLY MOUNTED SO THAT THE POSITION OF SAID POINTER CAN BE MOVED WITHOUT VARYING THE CURRENT OUTPUT OF SAID PHOTO-ELECTRIC CELL, A STATIONARY INDEX TO WHICH SAID POINTER CAN BE SET, MEANS FOR ADJUSTING THE EXPOSURE TIME OF THE CAMERA, MEANS FOR ADJUSTING THE DIAPHRAGM OPENING OF THE CAMERA, AND MEANS OPERATIVELY CONNECTING SAID EXPOSURE TIME ADJUSTING MEANS AND SAID DIAPHRAGM OPENING ADJUSTING MEANS WITH SAID PHOTO-ELECTRIC CELL LIGHT-VARYING MEANS AND SAID MEASURING MECHANISM SO THAT ACTUATING SAID ADJUSTING MEANS UP TO A PREDETERMINED LIGHT VALUE WILL RESET SAID POINTER TO SAID STATIONARY INDEX ONLY BY PIVOTING SAID MEASURING MECHANISM AND BEYOND SAID LIGHT VALUE ONLY BY VARYING THE CURRENT OUTPUT OF SAID PHOTOELECTRIC CELL.
Claim 2
Dependent Claim
157 words
IN A CAMERA, A PHOTO-ELECTRIC CELL MOUNTED THEREIN, SAID PHOTO-ELECTRIC CELL HAVING MEANS FOR VARYING THE LIGHT RECEIVED THEREBY AND THE RESULTING CURRENT OUTPUT THEREOF, A MEASURING MECHANISM RESPONSIVE TO SAID CURRENT OUTPUT AND HAVING A MOVEABLE POINTER, SAID MEASURING MECHANISM BEING PIVOTALLY MOUNTED SO THAT THE POSITION OF SAID POINTER CAN BE MOVED WITHOUT VARYING THE CURRENT OUTPUT OF SAID PHOTO-ELECTRIC CELL, A STATIONARY INDEX TO WHICH SAID POINTER CAN BE SET, MEANS FOR ADJUSTING THE EXPOSURE TIME OF THE CAMERA, MEANS FOR ADJUSTING THE DIAPHRAGM OPENING OF THE CAMERA, AND MEANS OPERATIVELY CONNECTING SAID EXPOSURE TIME ADJUSTING MEANS AND SAID DIAPHRAGM OPENING ADJUSTING MEANS WITH SAID PHOTO-ELECTRIC CELL LIGHT-VARYING MEANS AND SAID MEASURING MECHANISM SO THAT ACTUATING SAID ADJUSTING MEANS UP TO A PREDETERMINED LIGHT VALUE WILL RESET SAID POINTER TO SAID STATIONARY INDEX ONLY BY PIVOTING SAID MEASURING MECHANISM AND BEYOND SAID LIGHT VALUE ONLY BY VARYING THE CURRENT OUTPUT OF SAID PHOTOELECTRIC CELL.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |