US3081679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid film changing device
Assignee: Franklin X Ray Corp
•
Filing: 1958-06-06
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Granted: 1963-03-19
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 William J Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:27
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/021; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A PHOTOGRAPHIC APPARATUS; MEANS FOR HOLDING A SUPPLY ROLL OF UNEXPOSED FILM; MOTOR DRIVE MEANS, INCLUDING AN INTERMITTENT GENEVA MOVEMENT, FOR ADVANCING SAID UNEXPOSED FILM THROUGH AN EXPOSURE STATION IN AN INTERMITTENT CYCLIC MOVEMENT CHARACTERIZED BY A MOTION PERIOD AND A MOMENTARY STOP PERIOD; MEANS FOR EXPOSING SAID FILM DURING A STOP PERIOD; SHEARING MEANS, CONNECTED TO SAID MOTOR DRIVE MEANS, FOR AUTOMATICALLY CUTTING A TRANSVERSE NOTCH AT THE EDGE OF SAID FILM DURING THE STOP PERIOD NEXT FOLLOWING EXPOSURE OF A FRAME, FOR MARKING THE END OF SAID FRAME; A REMOVABLE MAGAZINE FOR RECEIVING SAID EXPOSED NOTCHED FILM; MEANS, INCLUDING A MAGNETIC CLUTCH CONNECTED FOR DRIVING A WIND-UP SPOOL ROTATIONALLY FOR WINDING UP SAID EXPOSED NOTCHED FILM; AND MANUALLY OPERABLE MEANS FOR COMPLETELY SEVERING SAID FILM AFTER A SELECTABLE NUMBER OF SUCCESSIVE FRAMES HAVE BEEN EXPOSED AND NOTCHED.
Claim 2
Dependent Claim
140 words
IN A PHOTOGRAPHIC APPARATUS; MEANS FOR HOLDING A SUPPLY ROLL OF UNEXPOSED FILM; MOTOR DRIVE MEANS, INCLUDING AN INTERMITTENT GENEVA MOVEMENT, FOR ADVANCING SAID UNEXPOSED FILM THROUGH AN EXPOSURE STATION IN AN INTERMITTENT CYCLIC MOVEMENT CHARACTERIZED BY A MOTION PERIOD AND A MOMENTARY STOP PERIOD; MEANS FOR EXPOSING SAID FILM DURING A STOP PERIOD; SHEARING MEANS, CONNECTED TO SAID MOTOR DRIVE MEANS, FOR AUTOMATICALLY CUTTING A TRANSVERSE NOTCH AT THE EDGE OF SAID FILM DURING THE STOP PERIOD NEXT FOLLOWING EXPOSURE OF A FRAME, FOR MARKING THE END OF SAID FRAME; A REMOVABLE MAGAZINE FOR RECEIVING SAID EXPOSED NOTCHED FILM; MEANS, INCLUDING A MAGNETIC CLUTCH CONNECTED FOR DRIVING A WIND-UP SPOOL ROTATIONALLY FOR WINDING UP SAID EXPOSED NOTCHED FILM; AND MANUALLY OPERABLE MEANS FOR COMPLETELY SEVERING SAID FILM AFTER A SELECTABLE NUMBER OF SUCCESSIVE FRAMES HAVE BEEN EXPOSED AND NOTCHED.
References Cited (Backward Citations)
US1992091A
Cited
US2082232A
Cited
US2043004A
Cited
US2173831A
Cited
US2474159A
Cited
US2388423A
Cited
US2533099A
Cited
US2652744A
Cited
US2673500A
Cited
GB732402A
Cited
US2796009A
Cited
GB782236A
Cited
US2782678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |