US3074333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single lens mirror reflex cameras
Assignee: Zeiss Ikon AG
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Filing: 1960-02-17
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Granted: 1963-01-22
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Expires: 1980-02-17
Abstract
No abstract record available.
Inventors
- 👤 Hahn Johann
- 👤 Sauer Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:09
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN A SINGLE LENS MIRROR REFLEX CAMERA, A FINDER PROVIDED WITH A PIVOTED MIRROR, A LENS SHUTTER, A MANUALLY ROTATABLE SHUTTER TENSIONING MEANS, A MANUALLY OPERABLE SHUTTER RELEASE MEANS, AN ADJUSTABLE DIAPHRAGM, AND A CONTROL DEVICE OPERATIVELY CONNECTED WITH SAID SHUTTER TENSIONING MEANS AND INCLUDING MEANS FOR OPENING SAID SHUTTER AND SAID DIAPHRAGM FOR AN OBSERVATION OF THE OBJECT PHOTOGRAPHED IN SAID FINDER IMMEDIATELY AFTER SAID SHUTTER RELEASE MEANS HAS BEEN OPERATED AND AN EXPOSURE HAS BEEN MADE, SAID MEANS OPERATING A MECHANISM WHICH RETURNS SAID PIVOTED MIRROR TO ITS OPERATED POSITION IN SAID FINDER AFTER THE COMPLETION OF SAID EXPOSURE, A FIRST POWER STORAGE MEANS FOR RETURNING THE MIRROR IN SAID FINDER TO ITS OPERATIVE OBSERVATION POSITION AFTER AN EXPOSURE HAS BEEN MADE, SAID POWER STORAGE MEANS COMPRISING A SPRING WHICH IS TENSIONED WHEN SAID SHUTTER TENSIONING MEANS IS OPERATED, MEANS FOR LOCKING SAID SPRING IN THIS TENSIONED POSITION, AND A SECOND POWER STORAGE MEANS INCLUDING A SECOND SPRING FOR OPENING THE SHUTTER AFTER THE EXPOSURE HAS BEEN MADE AND A SECOND LOCKING MEANS FOR HOLDING SAID SECOND SPRING TENSIONED AND OPERATED BY SAID SHUTTER TENSIONING MEANS.
Claim 2
Dependent Claim
188 words
IN A SINGLE LENS MIRROR REFLEX CAMERA, A FINDER PROVIDED WITH A PIVOTED MIRROR, A LENS SHUTTER, A MANUALLY ROTATABLE SHUTTER TENSIONING MEANS, A MANUALLY OPERABLE SHUTTER RELEASE MEANS, AN ADJUSTABLE DIAPHRAGM, AND A CONTROL DEVICE OPERATIVELY CONNECTED WITH SAID SHUTTER TENSIONING MEANS AND INCLUDING MEANS FOR OPENING SAID SHUTTER AND SAID DIAPHRAGM FOR AN OBSERVATION OF THE OBJECT PHOTOGRAPHED IN SAID FINDER IMMEDIATELY AFTER SAID SHUTTER RELEASE MEANS HAS BEEN OPERATED AND AN EXPOSURE HAS BEEN MADE, SAID MEANS OPERATING A MECHANISM WHICH RETURNS SAID PIVOTED MIRROR TO ITS OPERATED POSITION IN SAID FINDER AFTER THE COMPLETION OF SAID EXPOSURE, A FIRST POWER STORAGE MEANS FOR RETURNING THE MIRROR IN SAID FINDER TO ITS OPERATIVE OBSERVATION POSITION AFTER AN EXPOSURE HAS BEEN MADE, SAID POWER STORAGE MEANS COMPRISING A SPRING WHICH IS TENSIONED WHEN SAID SHUTTER TENSIONING MEANS IS OPERATED, MEANS FOR LOCKING SAID SPRING IN THIS TENSIONED POSITION, AND A SECOND POWER STORAGE MEANS INCLUDING A SECOND SPRING FOR OPENING THE SHUTTER AFTER THE EXPOSURE HAS BEEN MADE AND A SECOND LOCKING MEANS FOR HOLDING SAID SECOND SPRING TENSIONED AND OPERATED BY SAID SHUTTER TENSIONING MEANS.
References Cited (Backward Citations)
US2730025A
Cited
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 |