US3137200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-threading projector
Assignee: Bell and Howell Co
•
Filing: 1960-12-19
•
Granted: 1964-06-16
•
Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Michaels Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:09
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A MOTION PICTURE PROJECTOR, ADAPTED TO AUTOMATICALLY THREAD FILM FOR PROJECTION, A MOUNTING STRUCTURE, AN APERTURE PLATE HAVING AN PAERTURE MOUNTED ON THE MOUNTING STRUCTURE, AT LEAST ONE SPROCKET MOUNTED FOR ROTATION ON A PORTION OF THE STRUCTURE FOR ADVANCING FILM TO THE APERTURE PLATE, A GATE PIVOTALLY MOUNTED ON THE MOUNTING STRUCTURE FOR MOVEMENT TOWARD AND AWAY FROM A CLOSED POSITION PARALLEL TO SAID PORTION OF THE STRUCTURE, AND GUIDE MEANS INCLUDING A SPROCKET GUIDE PORTION MOUNTED ON THE GATE AND ADAPTED TO COOPERATE WITH SAID AT LEAST ONE SPROCKET TO HOLD FILM IN MESH WITH THE SPROCKET TO ENABLE THE FILM TO BE AUTOMATICALLY THREADED WHEN THE GATE IS IN ITS CLOSED POSITION, AND TO RELEASE THE THREADED FILM SO THAT THE FILM
Claim 2
Dependent Claim
126 words
IN A MOTION PICTURE PROJECTOR, ADAPTED TO AUTOMATICALLY THREAD FILM FOR PROJECTION, A MOUNTING STRUCTURE, AN APERTURE PLATE HAVING AN PAERTURE MOUNTED ON THE MOUNTING STRUCTURE, AT LEAST ONE SPROCKET MOUNTED FOR ROTATION ON A PORTION OF THE STRUCTURE FOR ADVANCING FILM TO THE APERTURE PLATE, A GATE PIVOTALLY MOUNTED ON THE MOUNTING STRUCTURE FOR MOVEMENT TOWARD AND AWAY FROM A CLOSED POSITION PARALLEL TO SAID PORTION OF THE STRUCTURE, AND GUIDE MEANS INCLUDING A SPROCKET GUIDE PORTION MOUNTED ON THE GATE AND ADAPTED TO COOPERATE WITH SAID AT LEAST ONE SPROCKET TO HOLD FILM IN MESH WITH THE SPROCKET TO ENABLE THE FILM TO BE AUTOMATICALLY THREADED WHEN THE GATE IS IN ITS CLOSED POSITION, AND TO RELEASE THE THREADED FILM SO THAT THE FILM
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |