US3298295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Objective with resilient diaphragm
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1964-04-10
•
Granted: 1967-01-17
•
Expires: 1984-04-10
Abstract
No abstract record available.
Inventors
- 👤 Schlapp Werner
- 👤 Wetzlar Kreis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:28
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
IN COMBINATION, A LENS MOUNT AND AN OBJECTIVE LENS MOUNTED THEREIN, DIAPHRAGM MEANS COMPRISING FIRST RING MEANS ROTATABLY MOUNTED IN SAID MOUNT AND HAVING AN ADJUSTABLE APERTURE THEREIN, PRESELECTOR RING MEANS ROTATABLY MOUNTED IN SAID MOUNT AND ADAPTED FOR PRESELECTING THE DESIRED APERTURE IN SAID DIAPHRAGM MEANS, SPRING MEANS TO ROTATE SAID FIRST RING MEANS TO A POSITION TO EFFECT ADJUSTMENT OF SAID APERTURE IN ACCORDANCE WITH A PRESELECTED APERTURE, AND MEANS TO PREVENT VARIATION OF SAID APERTURE AFTER SAID SPRING MEANS ROTATE SAID FIRST RING MEANS TO SAID POSITION, SAID LAST NAMED MEANS COMPRISING A LEAF SPRING HAVING ONE END MOUNTED ON SAID PRESELECTOR RING MEANS AND HAVING A SECOND END, LUG MEANS MOUNTED ON SAID FIRST RING MEANS TO ROTATE THEREWITH AND HAVING AN APERTURE THEREIN, SAID SECOND END BEING ADAPTED TO ENGAGE SAID LUG MEANS TO REDUCE THE ROTATIONAL VELOCITY OF SAID FIRST RING MEANS AS IT APPROACHES SAID POSITION AND FURTHER BEING ADAPTED TO ENGAGE THE APERTURE IN SAID LUG MEANS WHEN SAID DIAPHRAGM MEANS IS FULLY ROTATED TO SAID POSITION.
Claim 2
Dependent Claim
175 words
IN COMBINATION, A LENS MOUNT AND AN OBJECTIVE LENS MOUNTED THEREIN, DIAPHRAGM MEANS COMPRISING FIRST RING MEANS ROTATABLY MOUNTED IN SAID MOUNT AND HAVING AN ADJUSTABLE APERTURE THEREIN, PRESELECTOR RING MEANS ROTATABLY MOUNTED IN SAID MOUNT AND ADAPTED FOR PRESELECTING THE DESIRED APERTURE IN SAID DIAPHRAGM MEANS, SPRING MEANS TO ROTATE SAID FIRST RING MEANS TO A POSITION TO EFFECT ADJUSTMENT OF SAID APERTURE IN ACCORDANCE WITH A PRESELECTED APERTURE, AND MEANS TO PREVENT VARIATION OF SAID APERTURE AFTER SAID SPRING MEANS ROTATE SAID FIRST RING MEANS TO SAID POSITION, SAID LAST NAMED MEANS COMPRISING A LEAF SPRING HAVING ONE END MOUNTED ON SAID PRESELECTOR RING MEANS AND HAVING A SECOND END, LUG MEANS MOUNTED ON SAID FIRST RING MEANS TO ROTATE THEREWITH AND HAVING AN APERTURE THEREIN, SAID SECOND END BEING ADAPTED TO ENGAGE SAID LUG MEANS TO REDUCE THE ROTATIONAL VELOCITY OF SAID FIRST RING MEANS AS IT APPROACHES SAID POSITION AND FURTHER BEING ADAPTED TO ENGAGE THE APERTURE IN SAID LUG MEANS WHEN SAID DIAPHRAGM MEANS IS FULLY ROTATED TO SAID POSITION.
References Cited (Backward Citations)
US2612093A
Cited
US2967472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |