US3136291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for indicating completion of exposure of film
Assignee: Mamiya-OP Co Ltd
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Filing: 1962-05-17
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Granted: 1964-06-09
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Expires: 1982-05-17
Abstract
No abstract record available.
Inventors
- 👤 Irisawa Kunio
- 👤 Kokubo Hideo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:08
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/60; G03B1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A DEVICE FOR INDICATING THE COMPLETION OF EXPOSURE OF FILM WITHIN THE VIEW FINDER OF A CAMERA COMPRISING: A CIRCULAR FRAME COUNTER; A RATCHET GEAR MOUNTED AXIALLY WITH SAID COUNTER FOR OPERATING SAID COUNTER, SAID GEAR DEFINING A CUTOUT PORTION ALONG THE PERIPHERAL GEAR SURFACE; AN ESSENTIALLY THREE-CORNERED ACTUATING MEMBER COMPRISING A PAWL ENGAGING SAID RATCHET GEAR AT ONE CORNER, MEANS TO PIVOT SAID ACTUATING MEMBER AT ANOTHER CORNER, AND A BENT FINGER PORTION AT A THIRD CORNER; AN ESSENTIALLY THREE-CORNERED INDICATOR PLATE FOR INDICATING THE COMPLETION OF EXPOSURE COMPRISING A LUG FOR ENGAGING SAID BENT FINGER AT ONE CORNER, MEANS TO PIVOT SAID INDICATOR PLATE AT ANOTHER CORNER, AND MEANS TO EXPOSE INDICIA ON THE VIEW FINDER OF THE CAMERA AT A THIRD CORNER; AND MEANS TO ROTATE SAID ACTUATING MEMBER ABOUT SAID ACTUATING MEMBER PIVOT WHEN SAID PAWL REACHES THE CUTOUT PORTION OF SAID RATCHET GEAR, SAID BENT FINGER PORTION THEREBY ENGAGING SAID LUG AND ROTATING SAID INDICATOR PLATE ABOUT SAID INDICATOR PLATE PIVOT TO MOVE SAID INDICIA EXPOSING MEANS OUT OF SAID VIEW FINDER.
Claim 2
Independent Claim
177 words
A DEVICE FOR INDICATING THE COMPLETION OF EXPOSURE OF FILM WITHIN THE VIEW FINDER OF A CAMERA COMPRISING: A CIRCULAR FRAME COUNTER; A RATCHET GEAR MOUNTED AXIALLY WITH SAID COUNTER FOR OPERATING SAID COUNTER, SAID GEAR DEFINING A CUTOUT PORTION ALONG THE PERIPHERAL GEAR SURFACE; AN ESSENTIALLY THREE-CORNERED ACTUATING MEMBER COMPRISING A PAWL ENGAGING SAID RATCHET GEAR AT ONE CORNER, MEANS TO PIVOT SAID ACTUATING MEMBER AT ANOTHER CORNER, AND A BENT FINGER PORTION AT A THIRD CORNER; AN ESSENTIALLY THREE-CORNERED INDICATOR PLATE FOR INDICATING THE COMPLETION OF EXPOSURE COMPRISING A LUG FOR ENGAGING SAID BENT FINGER AT ONE CORNER, MEANS TO PIVOT SAID INDICATOR PLATE AT ANOTHER CORNER, AND MEANS TO EXPOSE INDICIA ON THE VIEW FINDER OF THE CAMERA AT A THIRD CORNER; AND MEANS TO ROTATE SAID ACTUATING MEMBER ABOUT SAID ACTUATING MEMBER PIVOT WHEN SAID PAWL REACHES THE CUTOUT PORTION OF SAID RATCHET GEAR, SAID BENT FINGER PORTION THEREBY ENGAGING SAID LUG AND ROTATING SAID INDICATOR PLATE ABOUT SAID INDICATOR PLATE PIVOT TO MOVE SAID INDICIA EXPOSING MEANS OUT OF SAID VIEW FINDER.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |