US3124033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control arrangement for the diaphragm of a photographic
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:28
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN A CONTROL ARRANGEMENT FOR THE DIAPHRAGM OF A PHOTOGRAPHIC OR CINEMATOGRAPHIC TAKING OBJECTIVE, THE COMBINATION OF AN OBJECTIVE, DIAPHRAGM BLADES PROVIDED WITHIN SAID OBJECTIVE AND ADAPTED TO CONTROL THE LIGHT INCIDENT THROUGH SAID OBJECTIVE, A PHOTO RESISTOR ARRANGED TO RECEIVE LIGHT INCIDENT THROUGH SAID OBJECTIVE AND CONTROLLED BY SAID DIAPHRAGM BLADES, A COMPARISON RESISTOR, A GALVANOMETER COMPRISING A PERMANENT MAGNET AND COORDINATED TO EACH OF SAID DIAPHRAGM BLADES, A ROTATABLE COIL ARRANGED IN THE FIELD OF SAID PERMANENT MAGNET, TWO COAXIAL WINDINGS WITHIN SAID COIL WOUND IN OPPOSITE DIRECTIONS, AT LEAST THREE CURRENT-CARRYING WIRES OF SOFT METAL CONNECTING SAID TWO WINDINGS WITH FIXED TERMINALS, SAID WIRES BEING ARRANGED IN SUCH A WAY THAT THEY EXERT NO RESTORING MOMENT TO SAID GALVANOMETER COIL UPON TURNING THE LATTER, A SOURCE OF CURRENT, TWO CIRCUITS ENERGIZED BY SAID SOURCE OF CURRENT, ONE OF SAID TWO CIRCUITS INCLUDING ONE OF SAID TWO COAXIAL WINDINGS OF SAID GALANOMETER COIL AND THE OTHER OF SAID TWO CIRCUITS INCLUDING THE OTHER OF SAID TWO COAXIAL WINDINGS OF SAID GALANOMETER COIL, A FIRST OF SAID TWO CIRCUITS INCLUDING SAID PHOTO RESISTOR, A
Claim 2
Dependent Claim
185 words
IN A CONTROL ARRANGEMENT FOR THE DIAPHRAGM OF A PHOTOGRAPHIC OR CINEMATOGRAPHIC TAKING OBJECTIVE, THE COMBINATION OF AN OBJECTIVE, DIAPHRAGM BLADES PROVIDED WITHIN SAID OBJECTIVE AND ADAPTED TO CONTROL THE LIGHT INCIDENT THROUGH SAID OBJECTIVE, A PHOTO RESISTOR ARRANGED TO RECEIVE LIGHT INCIDENT THROUGH SAID OBJECTIVE AND CONTROLLED BY SAID DIAPHRAGM BLADES, A COMPARISON RESISTOR, A GALVANOMETER COMPRISING A PERMANENT MAGNET AND COORDINATED TO EACH OF SAID DIAPHRAGM BLADES, A ROTATABLE COIL ARRANGED IN THE FIELD OF SAID PERMANENT MAGNET, TWO COAXIAL WINDINGS WITHIN SAID COIL WOUND IN OPPOSITE DIRECTIONS, AT LEAST THREE CURRENT-CARRYING WIRES OF SOFT METAL CONNECTING SAID TWO WINDINGS WITH FIXED TERMINALS, SAID WIRES BEING ARRANGED IN SUCH A WAY THAT THEY EXERT NO RESTORING MOMENT TO SAID GALVANOMETER COIL UPON TURNING THE LATTER, A SOURCE OF CURRENT, TWO CIRCUITS ENERGIZED BY SAID SOURCE OF CURRENT, ONE OF SAID TWO CIRCUITS INCLUDING ONE OF SAID TWO COAXIAL WINDINGS OF SAID GALANOMETER COIL AND THE OTHER OF SAID TWO CIRCUITS INCLUDING THE OTHER OF SAID TWO COAXIAL WINDINGS OF SAID GALANOMETER COIL, A FIRST OF SAID TWO CIRCUITS INCLUDING SAID PHOTO RESISTOR, A
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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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |