Patent US3132576A successfully refreshed from Google Patents.
US3132576A
Expired / Lapsed
US
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Iris diaphragm
Assignee: Jos Schneider Optische Werke GmbH
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Filing: 1961-02-06
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Granted: 1964-05-12
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Expires: 1981-02-06
Abstract
No abstract record available.
Inventors
- 👤 Mahn Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN IRIS DIAPHRAGM COMPRISING A PAIR OF RELATIVELY ROTATABLE COAXIAL RINGS, A FIRST SET OF IRIS LEAVES PIVOTALLY SECURED TO ONE OF SAID RINGS, A SECOND SET OF IRIS LEAVES PIVOTALLY SECURED TO THE OTHER OF SAID RINGS, SAID ONE OF SAID RINGS BEING PROVIDED WITH CAMMING FORMATIONS FOR THE GUIDANCE OF SAID SECOND SET OF LEAVES, SAID OTHER OF SAID RINGS BEING PROVIDED WITH CAMMING FORMATIONS FOR THE GUIDANCE OF SAID FIRST SET OF LEAVES, AND GUIDE MEANS ON EACH OF SAID LEAVES REMOTE FROM THE PIVOT THEREOF AND ENGAGED BY A RESPECTIVE CAMMING FORMATION WHEREBY SAID LEAVES ARE SWINGABLE BY RELATIVE ROTATION OF SAID RINGS FOR DEFINING A VARIABLE DIAPHRAGM APERTURE.
Claim 2
Dependent Claim
113 words
AN IRIS DIAPHRAGM COMPRISING A PAIR OF RELATIVELY ROTATABLE COAXIAL RINGS, A FIRST SET OF IRIS LEAVES PIVOTALLY SECURED TO ONE OF SAID RINGS, A SECOND SET OF IRIS LEAVES PIVOTALLY SECURED TO THE OTHER OF SAID RINGS, SAID ONE OF SAID RINGS BEING PROVIDED WITH CAMMING FORMATIONS FOR THE GUIDANCE OF SAID SECOND SET OF LEAVES, SAID OTHER OF SAID RINGS BEING PROVIDED WITH CAMMING FORMATIONS FOR THE GUIDANCE OF SAID FIRST SET OF LEAVES, AND GUIDE MEANS ON EACH OF SAID LEAVES REMOTE FROM THE PIVOT THEREOF AND ENGAGED BY A RESPECTIVE CAMMING FORMATION WHEREBY SAID LEAVES ARE SWINGABLE BY RELATIVE ROTATION OF SAID RINGS FOR DEFINING A VARIABLE DIAPHRAGM APERTURE.
References Cited (Backward Citations)
GB190827433A
Cited
US2129562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |