Patent US3344726A successfully refreshed from Google Patents.
US3344726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photogrpahic camera with controlled diaphragm setting
Assignee: Hittech Prontor GmbH
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Filing: 1964-07-13
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Granted: 1967-10-03
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Weller Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:09
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A PHOTOGRAPHIC CAMERA COMPRISING: A VARIABLE APERTURE DIAPHRAGM HAVING MAXIMUM AND MINIMUM APERTURE SETTINGS; A DISTANCE VALUE SETTING MEMBER; A GUIDE NUMBER SETTING MEMBER; A DIFFERENTIAL MECHANISM HAVING A FIRST INPUT CONNECTION TO SAID DISKTANCE VALUE SETTING MEMBER AND A SECOND INPUT CONNECTION TO SAID GUIDE NUMBER SETTING MEMBER; A DIAPHRAGM CONTROL CONNECTED TO SAID DIFFERENTIAL MECHANISM TO BE ACTUATED THEREBY AND CONNECTED TO SAID DIAPHRAGM TO CONTROL THE SIZE OF APERTURE THEREOF; AND LOCKING MEANS ENGAGEABLE WITH SAID DISTANCE VALUE SETTING MEMBER FOR PREVENTING THE LATTER FROM BEING SET AT A VALUE OUTSIDE OF A RANGE DETERMINED BY THE GUIDE NUMBER EQUATION GUIDE NUMBER=DISTANCE VALUE X DIAPHRAGM VALUE AND BY THE MINIMUM AND MAXIMUM APETURE SETTINGS OF SAID DIAPHRAGM AND FOR RETURNING SAID DISTANCE VALUE SETTING MEMBER TO SAID RANGE AFTER SAID GUIDE NUMBER SETTING MEMBER HAS BEEN SET.
Claim 2
Dependent Claim
140 words
A PHOTOGRAPHIC CAMERA COMPRISING: A VARIABLE APERTURE DIAPHRAGM HAVING MAXIMUM AND MINIMUM APERTURE SETTINGS; A DISTANCE VALUE SETTING MEMBER; A GUIDE NUMBER SETTING MEMBER; A DIFFERENTIAL MECHANISM HAVING A FIRST INPUT CONNECTION TO SAID DISKTANCE VALUE SETTING MEMBER AND A SECOND INPUT CONNECTION TO SAID GUIDE NUMBER SETTING MEMBER; A DIAPHRAGM CONTROL CONNECTED TO SAID DIFFERENTIAL MECHANISM TO BE ACTUATED THEREBY AND CONNECTED TO SAID DIAPHRAGM TO CONTROL THE SIZE OF APERTURE THEREOF; AND LOCKING MEANS ENGAGEABLE WITH SAID DISTANCE VALUE SETTING MEMBER FOR PREVENTING THE LATTER FROM BEING SET AT A VALUE OUTSIDE OF A RANGE DETERMINED BY THE GUIDE NUMBER EQUATION GUIDE NUMBER=DISTANCE VALUE X DIAPHRAGM VALUE AND BY THE MINIMUM AND MAXIMUM APETURE SETTINGS OF SAID DIAPHRAGM AND FOR RETURNING SAID DISTANCE VALUE SETTING MEMBER TO SAID RANGE AFTER SAID GUIDE NUMBER SETTING MEMBER HAS BEEN SET.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |