Patent US3218115A successfully refreshed from Google Patents.
US3218115A
Expired / Lapsed
US
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Film engagement device
Assignee: INSTRUMENTS CORP OF AMERICA
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Filing: 1964-02-24
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Granted: 1965-11-16
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Edward C Barocela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:50
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A FILM ENGAGEMENT DEVICE IN A MOTION PICTURE PROJECTOR COMPRISING, A MOTION PICTURE FILM HAVING DISCRETE IMAGES AND A PLURALITY OF SPACED SPROCKET HOLES, AN APERTURED FILM GUIDE DEFINING AN OBJECT PLANE FOR GUIDING THE FILM DURING PROJECTION, A DRIVEN SPROCKET WHEEL POSITIONED ADJACENT TO ONE END OF THE FILM GUIDE FOR ENGAGING THE FILM AND FOR PULLING IT THROUGH THE OBJECT PLANE, A MOVABLE ARM CARRYING AT LEAST ONE IDLER ROLLER FOR SHIFTING THE FILM INTO ENGAGING POSITION WITH THE SPROCKET WHEEL, A SOLENOID MECHANICALLY COUPLED TO SAID ARM FOR MOVING IT INTO ENGAGING POSITION, AND AN ELEC-
Claim 2
Dependent Claim
99 words
A FILM ENGAGEMENT DEVICE IN A MOTION PICTURE PROJECTOR COMPRISING, A MOTION PICTURE FILM HAVING DISCRETE IMAGES AND A PLURALITY OF SPACED SPROCKET HOLES, AN APERTURED FILM GUIDE DEFINING AN OBJECT PLANE FOR GUIDING THE FILM DURING PROJECTION, A DRIVEN SPROCKET WHEEL POSITIONED ADJACENT TO ONE END OF THE FILM GUIDE FOR ENGAGING THE FILM AND FOR PULLING IT THROUGH THE OBJECT PLANE, A MOVABLE ARM CARRYING AT LEAST ONE IDLER ROLLER FOR SHIFTING THE FILM INTO ENGAGING POSITION WITH THE SPROCKET WHEEL, A SOLENOID MECHANICALLY COUPLED TO SAID ARM FOR MOVING IT INTO ENGAGING POSITION, AND AN ELEC-
References Cited (Backward Citations)
US2051785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |