US3143310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film feeder
Assignee: AMERICAN FOTO PATROL Inc
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Filing: 1961-04-11
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Granted: 1964-08-04
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Expires: 1981-04-11
Abstract
No abstract record available.
Inventors
- 👤 Alexander R Norden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:49
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/20; G03B1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
FILM-FEEDING MECHANISM, INCLUDING A RECIPROCABLE ACTUATOR HAVING AN ELECTROMAGNET OPERABLE TO EFFECT FORWARD STROKES OF THE ACTUATOR AND HAVING A SPRING TO EFFECT RETURN STROKES OF THE ACTUATOR, A POSITIVE-ACTING FILM ADVANCING MECHANISM OPERABLE BY SAID ACTUATOR DURING EACH FORWARD STROKE THEREOF TO ADVANCE A SINGLEFRAME LENGTH OF FILM AND SAID MECHANISM HAVING A DETENT AND OPERATING MEANS THEREFOR EFFECTIVE TO ARREST SAID FILM BETWEEN SUCCESSIVE FORWARD STROKES AND TO RELEASE SAID FILM DURING FORWARD STROKES, AND A TAKE-UP MECHANISM INCLUDING A SHAFT FOR A TAKE-UP ROLL AND A ONEWAY DRIVE FOR SAID SHAFT HAVING A RESILIENT COUPLING TO
Claim 2
Dependent Claim
99 words
FILM-FEEDING MECHANISM, INCLUDING A RECIPROCABLE ACTUATOR HAVING AN ELECTROMAGNET OPERABLE TO EFFECT FORWARD STROKES OF THE ACTUATOR AND HAVING A SPRING TO EFFECT RETURN STROKES OF THE ACTUATOR, A POSITIVE-ACTING FILM ADVANCING MECHANISM OPERABLE BY SAID ACTUATOR DURING EACH FORWARD STROKE THEREOF TO ADVANCE A SINGLEFRAME LENGTH OF FILM AND SAID MECHANISM HAVING A DETENT AND OPERATING MEANS THEREFOR EFFECTIVE TO ARREST SAID FILM BETWEEN SUCCESSIVE FORWARD STROKES AND TO RELEASE SAID FILM DURING FORWARD STROKES, AND A TAKE-UP MECHANISM INCLUDING A SHAFT FOR A TAKE-UP ROLL AND A ONEWAY DRIVE FOR SAID SHAFT HAVING A RESILIENT COUPLING TO
References Cited (Backward Citations)
US1560908A
Cited
US2806694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |