Patent US3201796A successfully refreshed from Google Patents.
US3201796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic film threading device
Assignee: Bell and Howell Co
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Filing: 1963-10-09
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Granted: 1965-08-17
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Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Michaels Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:06
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
258 words
IN A SOUND PROJECTOR INCLUDING A SPROCKET, A SOUND DRUM SPACED FROM THE SPROCKET, AND A PAIR OF STABILIZING ROLLERS FOR ENGAGING THE TOP AND BOTTOM PORTIONS OF A FILM EXTENDING IN A PATH FROM THE UPPER SIDE OF THE SPROCKET TO THE UPPER SIDE OF THE DRUM AND FROM THE BOTTOM SIDE OF THE DRUM TO THE BOTTOM SIDE OF THE SPROCKET, THE COMBINATION THEREWITH OF A FIRST THREADING MEMBER EXTENDING BETWEEN THE SPROCKET AND THE DRUM AND MOVABLE FROM A RETRACTED POSITION INSIDE SAID PATH AND SPACED THEREFROM TO A THREADING POSITION EXTENDING FROM THE UPPER SIDE OF THE SPROCKET TO THE UPPER SIDE OF THE DRUM, A SECOND THREADING MEMBER EXTENDING BETWEEN THE SPROCKET AND THE DRUM AND MOVABVLE FROM A RETRACTED POSITION INSIDE SAID PATH AND SPACED THEREFROM TO A THREADING POSITION EXTENDING FROM THE LOWER SIDE OF THE DRUM TO THE LOWER SIDE OF THE SPROCKET, AND A GENERALLY U-SHAPED GUIDE EXTENDING LOOSELY AROUND THE DRUM FROM THE UPPER SIDE OF THE DRUM TO THE LOWER SIDE OF THE DRUM, SAID FIRST THREADING MEMBER SERVING WHEN IN ITS THREADING POSITION TO GUIDE THE FORWARD END OF THE FILM FROM THE UPPER SPROCKET INTO THE U-SHAPED GUIDE AND TO MOVE ONE OF THE STABILIZING ROLLERS AWAY FROM THE PATH OF THE FILM, THE SECOND THREADING MEMBER SERVING WHEN IN ITS THREADING POSITION TO GUIDE THE FILM END FROM THE BOTTOM SIDE OF THE DRUM TO THE BOTTOM SIDE OF THE SPROCKET AND MOVE THE OTHER STABILIZING ROLLER OUT OF THE PATH OF THE FILM.
Claim 2
Dependent Claim
258 words
IN A SOUND PROJECTOR INCLUDING A SPROCKET, A SOUND DRUM SPACED FROM THE SPROCKET, AND A PAIR OF STABILIZING ROLLERS FOR ENGAGING THE TOP AND BOTTOM PORTIONS OF A FILM EXTENDING IN A PATH FROM THE UPPER SIDE OF THE SPROCKET TO THE UPPER SIDE OF THE DRUM AND FROM THE BOTTOM SIDE OF THE DRUM TO THE BOTTOM SIDE OF THE SPROCKET, THE COMBINATION THEREWITH OF A FIRST THREADING MEMBER EXTENDING BETWEEN THE SPROCKET AND THE DRUM AND MOVABLE FROM A RETRACTED POSITION INSIDE SAID PATH AND SPACED THEREFROM TO A THREADING POSITION EXTENDING FROM THE UPPER SIDE OF THE SPROCKET TO THE UPPER SIDE OF THE DRUM, A SECOND THREADING MEMBER EXTENDING BETWEEN THE SPROCKET AND THE DRUM AND MOVABVLE FROM A RETRACTED POSITION INSIDE SAID PATH AND SPACED THEREFROM TO A THREADING POSITION EXTENDING FROM THE LOWER SIDE OF THE DRUM TO THE LOWER SIDE OF THE SPROCKET, AND A GENERALLY U-SHAPED GUIDE EXTENDING LOOSELY AROUND THE DRUM FROM THE UPPER SIDE OF THE DRUM TO THE LOWER SIDE OF THE DRUM, SAID FIRST THREADING MEMBER SERVING WHEN IN ITS THREADING POSITION TO GUIDE THE FORWARD END OF THE FILM FROM THE UPPER SPROCKET INTO THE U-SHAPED GUIDE AND TO MOVE ONE OF THE STABILIZING ROLLERS AWAY FROM THE PATH OF THE FILM, THE SECOND THREADING MEMBER SERVING WHEN IN ITS THREADING POSITION TO GUIDE THE FILM END FROM THE BOTTOM SIDE OF THE DRUM TO THE BOTTOM SIDE OF THE SPROCKET AND MOVE THE OTHER STABILIZING ROLLER OUT OF THE PATH OF THE FILM.
References Cited (Backward Citations)
US2114608A
Cited
US2127143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |