US3606526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing drive mechanism
Assignee: Logetronics Inc
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Filing: 1970-03-13
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Granted: 1971-09-20
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Expires: 1990-03-13
Abstract
Abstract AN INDEXING DRIVE MECHANISM IS PROVIDED TO TRANSPORT FILM IS A FLICKERLESS PROJECTION VIEWER. THE INDEXING MECHANISM INCLUDES A GENEVA STAR AND A PAIR OF GENEVA DRIVERS POSITIONED ADJACENT OPPOSED CAMMING SURFACES OF THE STAR. THE TWO GENEVA DRIVERS ARE MECHANICALLY INTERLOCKED AND SYNCHRONOUSLY DRIVEN FOR BOTH ROTATIONAL AND AXIAL RECIPROCATING MOTION RELATIVE TO THE GENEVA STAR, THE ARRANGEMENT BEING SUCH THE DRIVERS NORMALLY OPERATE TO LOCK THE GENEVA STAR IN FIXED POSITION. THE RECIPROCATING MOTION OF THE DRIVERS IS SELECTIVELY INTERRUPTED TO CAUSE A SELECTED ONE OF THE DRIVERS TO EFFECT 90* ROTATION OF THE STAR IN A SELECTED ONE OF TWO OPPOSITE DIRECTIONS.
Inventors
- 👤 Elliott P Smith
- 👤 Robert P Mason
- 👤 William L Kacin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:55
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/38; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |