US3074336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm devices for photographic or cinematographic cameras
Assignee: Individual
•
Filing: 1959-09-28
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Granted: 1963-01-22
•
Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 Hinden Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:03
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A DEVICE FOR SETTING AN ADJUSTABLE DIAPHRAGM OF PORTABLE STILL AND MOTION PICTURE FILM CAMERAS, SAID DEVICE COMPRISING A LENS TURRET MOUNTING SEVERAL OBJECTIVE LENSES, A MOVING COIL DEVICE INCLUDING A ROTARY MEMBER, A PHOTOELECTRIC CELL CONNECTED IN CIRCUIT WITH SAID MOVING COIL DEVICE TO ROTATE THE ROTARY MEMBER THEREOF BY POWER GENERATED BY THE CELL, THE AMOUNT OF LIGHT INCIDENT UPON SAID CELL CONTROLLING THE POSITION OF SAID ROTARY MEMBER, AND A PAIR OF ROTATABLY MOUNTED DIAPHRAGM SETTING BLADES, EACH OF SAID BLADES INCLUDING A DIAPHRAGM OPENING CONTROL PORTION FOR EACH OBJECTIVES LENS AND BEING IN DIRECT DRIVING ENGAGEMENT WITH SAID ROTARY MEMBER FOR ROTATION IN UNISON THEREWITH TO CONTROL THE POSITIONS OF SAID CONTROL PORTION OF THE BLADES IN REFERENCE TO EACH OTHER, SAID BLADES BEING ROTATED BY SAID ROTARY MEMBER IN OPPOSITE DIRECTION IN REFERENCE TO EACH OTHER IN RESPONSE TO ROTATION OF SAID MEMBER IN ONE DIRECTION, EACH RELATIVE POSITION OF THE CONTROL PORTIONS OF SAID BLADES EFFECTING SIMULTANEOUSLY A CORRESPONDING DIAPHRAGM OPENING AT ALL THE OBJECTIVE LENSES.
Claim 2
Independent Claim
172 words
A DEVICE FOR SETTING AN ADJUSTABLE DIAPHRAGM OF PORTABLE STILL AND MOTION PICTURE FILM CAMERAS, SAID DEVICE COMPRISING A LENS TURRET MOUNTING SEVERAL OBJECTIVE LENSES, A MOVING COIL DEVICE INCLUDING A ROTARY MEMBER, A PHOTOELECTRIC CELL CONNECTED IN CIRCUIT WITH SAID MOVING COIL DEVICE TO ROTATE THE ROTARY MEMBER THEREOF BY POWER GENERATED BY THE CELL, THE AMOUNT OF LIGHT INCIDENT UPON SAID CELL CONTROLLING THE POSITION OF SAID ROTARY MEMBER, AND A PAIR OF ROTATABLY MOUNTED DIAPHRAGM SETTING BLADES, EACH OF SAID BLADES INCLUDING A DIAPHRAGM OPENING CONTROL PORTION FOR EACH OBJECTIVES LENS AND BEING IN DIRECT DRIVING ENGAGEMENT WITH SAID ROTARY MEMBER FOR ROTATION IN UNISON THEREWITH TO CONTROL THE POSITIONS OF SAID CONTROL PORTION OF THE BLADES IN REFERENCE TO EACH OTHER, SAID BLADES BEING ROTATED BY SAID ROTARY MEMBER IN OPPOSITE DIRECTION IN REFERENCE TO EACH OTHER IN RESPONSE TO ROTATION OF SAID MEMBER IN ONE DIRECTION, EACH RELATIVE POSITION OF THE CONTROL PORTIONS OF SAID BLADES EFFECTING SIMULTANEOUSLY A CORRESPONDING DIAPHRAGM OPENING AT ALL THE OBJECTIVE LENSES.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |