US3698303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film pack
Assignee: Agfa Gevaert AG
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Filing: 1971-12-15
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Granted: 1972-10-17
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Expires: 1991-12-15
Abstract
Abstract Successive film units which are stored in the container of a photographic film pack for use in a camera which develops the film are connected to each other by flexible coupling strips each of which automatically passes between the pressure applying rolls of the camera in response to withdrawal of the preceding film unit. The leading ends of coupling strips are weakened so that they can be readily separated from preceding film units. Such separation is further facilitated by transversely extending or inclined beads provided on the coupling strips and engaging with the pressure applying rolls during separation of respective coupling strips from the preceding film units.
Inventors
- 👤 Hans-Peter Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:42
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34; G03B; G03B17/00; G03B17/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
295 words
In a photographic film pack, a combination comprising a container having a passage; identical first and second film units stored in said container and each including a photosensitive sheet and a print-receiving sheet, the photosensitive sheets of said units being stored separately from said print-receiving sheets of said units; identical first and second withdrawing means for respectively withdrawing said first and second film units along a predetermined path by way of said passage, each of said withdrawing means comprising a pair of connecting strips each having a trailing end connected to the leading end of a different sheet of the respective film unit and a leading end connected to the leading end of the other connecting strip, the leading end of at least one connecting strip of said first withdrawing means being accessible for the application of a withdrawing force outside of said passage; and a flexible coupling strip connecting the trailing end of one sheet of said first film unit with the leading ends of connecting strips of said second withdrawing means so that said coupling strip emerges from said passage upon withdrawal of said first film unit and can be advanced along said path to effect the withdrawal of said second film unit, the connecting strips of each of said withdrawing means being connected to each other in such a way that one sheet of the respective film unit is advanced toward said passage ahead of the other sheet in response to a pull upon said accessible leading end to withdraw said first film unit and in response to a pull upon said coupling strip to withdraw said second film unit and that, during removal from said container by way of said passage, the sheets of the respective film units overlap each other.
Claim 2
Dependent Claim
295 words
In a photographic film pack, a combination comprising a container having a passage; identical first and second film units stored in said container and each including a photosensitive sheet and a print-receiving sheet, the photosensitive sheets of said units being stored separately from said print-receiving sheets of said units; identical first and second withdrawing means for respectively withdrawing said first and second film units along a predetermined path by way of said passage, each of said withdrawing means comprising a pair of connecting strips each having a trailing end connected to the leading end of a different sheet of the respective film unit and a leading end connected to the leading end of the other connecting strip, the leading end of at least one connecting strip of said first withdrawing means being accessible for the application of a withdrawing force outside of said passage; and a flexible coupling strip connecting the trailing end of one sheet of said first film unit with the leading ends of connecting strips of said second withdrawing means so that said coupling strip emerges from said passage upon withdrawal of said first film unit and can be advanced along said path to effect the withdrawal of said second film unit, the connecting strips of each of said withdrawing means being connected to each other in such a way that one sheet of the respective film unit is advanced toward said passage ahead of the other sheet in response to a pull upon said accessible leading end to withdraw said first film unit and in response to a pull upon said coupling strip to withdraw said second film unit and that, during removal from said container by way of said passage, the sheets of the respective film units overlap each other.
Claim 3
Dependent Claim
28 words
A combination as defined in claim 1 wherein, prior to withdrawal from said container, said print-receiving sheets and said photosensitive sheets respectively form discrete first and second stacks.
Claim 4
Dependent Claim
44 words
A combination as defined in claim 1, wherein first and second portions of said coupling strip respectively extend between the photosensitive sheets and the print-receiving sheets of said first and second film units prior to withdrawal of said first film unit from said container.
Claim 5
Dependent Claim
45 words
A combination as defined in claim 1, wherein a portion of said coupling strip is disposed between a connecting strip of said first withdrawing means and a connecting strip of said second withdrawing means prior to withdrawal of said first film unit from said container.
Claim 6
Dependent Claim
16 words
A combination as defined in claim 1, wherein said coupling strip comprises portions of different width.
Claim 7
Dependent Claim
16 words
A combination as defined in claim 1, wherein said coupling strip comprises portions of different thickness.
Claim 8
Dependent Claim
21 words
A combination as defined in claim 1, wherein the connecting strips of each of said withdrawings means are of identical length.
Claim 9
Dependent Claim
33 words
A combination as defined in claim 1, wherein the sheets of said second film unit are disposed between the sheets of said first film unit prior to withdrawal of said first film unit.
Claim 10
Dependent Claim
40 words
A combination as defined in claim 1, wherein the leading end of one sheet of each film unit is more distant from said passage than the leading end of the other sheet prior to withdrawal of the respective film unit.
Claim 11
Dependent Claim
60 words
A combination as defined in claim 1, further comprising a pressure plate disposed in said container between said photosensitive and said print-receiving sheets, said pressure plate having a guide portion remote from said passage and said one sheet of each of sAid film units is caused to travel along said portion of said pressure plate while advancing toward said passage.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |