US3212838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cassette
Assignee: Eastman Kodak Co
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Filing: 1962-06-08
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Granted: 1965-10-19
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Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 William A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:28
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/26; G03B17/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN A FILM CASSETTE FOR INSERTION INTO A MOTION-PICTURE CAMERA, SAID CAMER HAVING MOTOR MEANS FOR DRIVING FILM PAST IN EXPOSURE APERTURE AND INCLUDING A SPINDLE DRIVING MEMBER, AND ELECTRICAL CONTROL MEANS FOR SELECTIVELY OPERATING SAID MOTOR MEANS, AND SAID CASSETTE HAVING A FILM SUPPLY SPINDLE FOR RECEIVING A SPOOL OF FILM AND A FILM TAKE-UP SPINDLE TO ENGAGE SAID SPINDLE DRIVING MEMBER WHEN SAID CASSETTE IS INSERTED INTO SAID CAMERA FOR TAKING UP SAID FILM DRIVEN FROM SAID SUPPLY SPINDLE PAST SAID EXPOSURE APERTURE BY SAID MOTOR MEANS, THE IMPROVEMENT COMPRISING: SWITCH MEANS IN SAID CASSETTE CONNECTED TO SAID ELECTRICAL CONTROL MEANS WHEN SAID CASSETTE IS INSERTED INTO SAID CAMERA AND MOVABLE TO A MOTOR DISABLING POSITION IN RESPONSE TO A PREDETERMINED AMOUNT OF SAID FILM TAKEN UP ON SAID TAKE-UP SPINDLE FOR RENDERING SAID MOTOR MEANS INOPERATIVE WHEN SAID PREDETERMINED AMOUNT OF SAID FILM IS TAKEN UP ON SAID TAKE-UP SPINDLE, AND FILM SENSING MEANS RESPONSIVE TO THE AMOUNT OF FILM STORED ON SAID SPOOL WHEN SAID SPOOL IS INITIALLY RECEIVED BY SAID FILM SUPPLY SPINDLE FOR DETERMINING THE AMOUNT OF FILM NECESSARY TO MOVE SAID SWITCH MEANS TO SAID MOTOR DISABLING POSITION.
Claim 2
Dependent Claim
195 words
IN A FILM CASSETTE FOR INSERTION INTO A MOTION-PICTURE CAMERA, SAID CAMER HAVING MOTOR MEANS FOR DRIVING FILM PAST IN EXPOSURE APERTURE AND INCLUDING A SPINDLE DRIVING MEMBER, AND ELECTRICAL CONTROL MEANS FOR SELECTIVELY OPERATING SAID MOTOR MEANS, AND SAID CASSETTE HAVING A FILM SUPPLY SPINDLE FOR RECEIVING A SPOOL OF FILM AND A FILM TAKE-UP SPINDLE TO ENGAGE SAID SPINDLE DRIVING MEMBER WHEN SAID CASSETTE IS INSERTED INTO SAID CAMERA FOR TAKING UP SAID FILM DRIVEN FROM SAID SUPPLY SPINDLE PAST SAID EXPOSURE APERTURE BY SAID MOTOR MEANS, THE IMPROVEMENT COMPRISING: SWITCH MEANS IN SAID CASSETTE CONNECTED TO SAID ELECTRICAL CONTROL MEANS WHEN SAID CASSETTE IS INSERTED INTO SAID CAMERA AND MOVABLE TO A MOTOR DISABLING POSITION IN RESPONSE TO A PREDETERMINED AMOUNT OF SAID FILM TAKEN UP ON SAID TAKE-UP SPINDLE FOR RENDERING SAID MOTOR MEANS INOPERATIVE WHEN SAID PREDETERMINED AMOUNT OF SAID FILM IS TAKEN UP ON SAID TAKE-UP SPINDLE, AND FILM SENSING MEANS RESPONSIVE TO THE AMOUNT OF FILM STORED ON SAID SPOOL WHEN SAID SPOOL IS INITIALLY RECEIVED BY SAID FILM SUPPLY SPINDLE FOR DETERMINING THE AMOUNT OF FILM NECESSARY TO MOVE SAID SWITCH MEANS TO SAID MOTOR DISABLING POSITION.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |