US3147681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette for photographic cameras
Assignee: Graflex Inc
•
Filing: 1961-05-17
•
Granted: 1964-09-08
•
Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 William R Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:34
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A DISPOSABLE CASSETTE FOR PHOTOGRAPHIC CAMERAS COMPRISING A SINGLE THIN SHEET WOUND INTO A SPIRAL COIL OF SLIGHTLY MORE THAN ONE CONVOLUTION, AND A PAIR OF PLUGS SPACED FROM ONE ANOTHER AXIALLY OF THE SPIRAL, EACH OF SAID PLUGS HAVING A RIGID HUB PORTION TO WHICH ONE LATERAL EDGE OF THE SHEET IS FASTENED, AND EACH OF SAID PLUGS HAVING AXIALLY-ALIGNED RECESSES IN ITS OUTER SURFACE WHICH TOGETHER CONSTITUTE BEARINGS FOR THE CASSETTE WHEN THE CASSETTE IS MOUNTED IN A CAMERA, THE INSIDE SURFACES OF THE TWO PLUGS BEING CIRCULAR PARALLEL PLANE SURFACE WHICH EXTEND INSIDE THE SHEET FROM SIDE TO SIDE THEREOF TO SUPPORT AND LOCATE A ROLL OF PHOTOSENSITIVE MATERIAL SIDEWISE IN THE CASSETTE, THE COILED SHEET CONSTITUTING THE SIDE WALL OF THE CASSETTE, THE OVERLAPPING PORTIONS OF THE COILED SHEET FORMING AND BOUNDING THE MOUTH OF THE CASSETTE THROUGH WHICH PHOTOSENSITIVE MATERIAL MAY BE FED, AND THE PLUGS CONSTITUTING THE ENDS OF THE CASSETTE,
Claim 2
Dependent Claim
157 words
A DISPOSABLE CASSETTE FOR PHOTOGRAPHIC CAMERAS COMPRISING A SINGLE THIN SHEET WOUND INTO A SPIRAL COIL OF SLIGHTLY MORE THAN ONE CONVOLUTION, AND A PAIR OF PLUGS SPACED FROM ONE ANOTHER AXIALLY OF THE SPIRAL, EACH OF SAID PLUGS HAVING A RIGID HUB PORTION TO WHICH ONE LATERAL EDGE OF THE SHEET IS FASTENED, AND EACH OF SAID PLUGS HAVING AXIALLY-ALIGNED RECESSES IN ITS OUTER SURFACE WHICH TOGETHER CONSTITUTE BEARINGS FOR THE CASSETTE WHEN THE CASSETTE IS MOUNTED IN A CAMERA, THE INSIDE SURFACES OF THE TWO PLUGS BEING CIRCULAR PARALLEL PLANE SURFACE WHICH EXTEND INSIDE THE SHEET FROM SIDE TO SIDE THEREOF TO SUPPORT AND LOCATE A ROLL OF PHOTOSENSITIVE MATERIAL SIDEWISE IN THE CASSETTE, THE COILED SHEET CONSTITUTING THE SIDE WALL OF THE CASSETTE, THE OVERLAPPING PORTIONS OF THE COILED SHEET FORMING AND BOUNDING THE MOUTH OF THE CASSETTE THROUGH WHICH PHOTOSENSITIVE MATERIAL MAY BE FED, AND THE PLUGS CONSTITUTING THE ENDS OF THE CASSETTE,
References Cited (Backward Citations)
US1513930A
Cited
US1794426A
Cited
US2032213A
Cited
US2017160A
Cited
US2030040A
Cited
US2464278A
Cited
US2544455A
Cited
US2482869A
Cited
US2571796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |