Patent US5271577A successfully refreshed from Google Patents.
US5271577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film cassette
Assignee: Fujifilm Corp
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Filing: 1992-04-17
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Granted: 1993-12-21
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Expires: 2012-04-17
Abstract
Abstract A film cassette assembly has a cassette and a roll of film wound on a spool and contained in the cassette. When the spool is rotated, the roll of film is rotated together with it in order to feed a film leader out of the cassette through a film passage mouth. To rotate the spool and the roll of film together, the film cassette assembly presses an axial end portion of the outermost periphery of the roll of film or presses the film's circumferential peripheral surface. Where the axial end portion of the outermost periphery of the roll of film is to be pressed, at least one of a pair of flanges of the spool is elastically deformed to clamp both axial side edges of the outermost periphery of the roll of film. Where the circumferential surface of the outermost periphery of the roll of film is to be pressed, a projection and an elastic member are provided within the cassette.
Inventors
- 👤 Koichi Takahashi
- 👤 Kazuo Okutsu
- 👤 Masuhiko Hirose
- 👤 Kazunori Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:56
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B2217/00; G03B2217/26; G03B2217/265; G03B2217/266
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
140 words
A photographic film cassette assembly having a spool for winding a photographic film in a roll, said spool including a spool shaft and a pair of flanges mounted on said spool shaft, and a cassette adapted to rotatably contain said spool therein and provided with a film passage mouth for passing photographic film therethrough, said photographic film cassette assembly further comprising: inwardly molded pressing means for deforming at least one of said flanges inwardly toward said roll of photographic film so that both axial end portions of the outermost periphery of said roll of photographic film are clamped between said pair of flanges, such hat, when said spool is rotated in an unwinding direction, said roll of film is rotated together with said spool in order to feed out a leader of said photographic film from said film passage mouth.
Claim 2
Dependent Claim
140 words
A photographic film cassette assembly having a spool for winding a photographic film in a roll, said spool including a spool shaft and a pair of flanges mounted on said spool shaft, and a cassette adapted to rotatably contain said spool therein and provided with a film passage mouth for passing photographic film therethrough, said photographic film cassette assembly further comprising: inwardly molded pressing means for deforming at least one of said flanges inwardly toward said roll of photographic film so that both axial end portions of the outermost periphery of said roll of photographic film are clamped between said pair of flanges, such hat, when said spool is rotated in an unwinding direction, said roll of film is rotated together with said spool in order to feed out a leader of said photographic film from said film passage mouth.
Claim 3
Dependent Claim
38 words
A photographic film cassette assembly as claimed in claim 1, wherein said pressing means comprises a projection formed on at least one side surface of said cassette, said projection elastically deforming one of said flanges toward the other.
Claim 4
Dependent Claim
90 words
A photographic film cassette assembly as claimed in claim 1, further including at least one projection located between said pair of flanges, said projection projecting toward said spool shaft, and having an inner diameter smaller than an outer diameter of an external peripheral end of said flanges, said projection restricting an outermost peripheral portion of said roll of photographic film so that said outermost peripheral portion does not enter a space defined between said external peripheral end of said flanges and an inner axial end wall of said cassette body.
Claim 5
Dependent Claim
31 words
A photographic film cassette assembly as claimed in claim 1, wherein said pressing means elastically deforms a part of a selected one of said pair of flanges toward the other flange.
Claim 6
Dependent Claim
40 words
A photographic film cassette assembly as claimed in claim 1, wherein said pressing means comprises at least one groove formed within said cassette, said groove elastically deforming one of said flanges, rotatably engaged within said groove, toward the other flange.
Claim 7
Dependent Claim
33 words
A photographic film cassette assembly as claimed in claim 1, wherein said pressing means is formed by making the distance between said pair of flanges shorter than the width of said photographic film.
Claim 8
Dependent Claim
25 words
A photographic film cassette assembly as claimed in claim 1, further comprising means for retaining said leader in a vicinity of said film passage mouth.
Claim 9
Dependent Claim
46 words
A photographic film cassette assembly as claimed in claim 1, further comprising a light shielding plate having an elastic nature and adapted to prevent light from entering the interior of said cassette, said light shielding plate being disposed in a vicinity of said film passage mouth.
Claim 10
Dependent Claim
162 words
A photographic film cassette assembly having a spool for winding an unexposed photographic film in a roll, said spool including a spool shaft and a pair of flanges mounted on said spool shaft, and a cassette adapted to rotatably contain said spool therein and provided with a film passage mouth for passing photographic film therethrough, said photographic film cassette assembly further comprising: inwardly molded pressing means for deforming at least one of said flanges inwardly toward said roll of photographic film so that both axial end portions of the outermost periphery of said roll of photographic film are clamped between said pair of flanges, such that, when said spool is rotated in an unwinding direction, said roll of film is rotated together with said spool in order to feed out a leader of said photographic film from said film passage mouth; and light shielding means for shielding said unexposed photographic film from exposure to light while said film exists in said cassette.
Claim 11
Dependent Claim
162 words
A photographic film cassette assembly having a spool for winding an unexposed photographic film in a roll, said spool including a spool shaft and a pair of flanges mounted on said spool shaft, and a cassette adapted to rotatably contain said spool therein and provided with a film passage mouth for passing photographic film therethrough, said photographic film cassette assembly further comprising: inwardly molded pressing means for deforming at least one of said flanges inwardly toward said roll of photographic film so that both axial end portions of the outermost periphery of said roll of photographic film are clamped between said pair of flanges, such that, when said spool is rotated in an unwinding direction, said roll of film is rotated together with said spool in order to feed out a leader of said photographic film from said film passage mouth; and light shielding means for shielding said unexposed photographic film from exposure to light while said film exists in said cassette.
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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) | 1996-12-20 | 1997-06-21 | 1997-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-20 | 2001-06-21 | 2001-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-20 | 2005-06-21 | 2005-12-21 | $7700.00 | Window Closed / Lapsed |