US4530582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure aperture frame construction for camera
Assignee: Fujifilm Holdings Corp
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Filing: 1983-09-29
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Granted: 1985-07-23
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Expires: 2003-09-29
Abstract
Abstract An exposure aperture frame defining an exposure aperture includes at least a pivotable partition member with an inclined guide surface on the inner wall thereof which is pivoted by and thereby permits advancement of a film leader to a film take-up chamber so that the film leader can reach a film take-up chamber without any standstill within the exposure aperture frame. The inclined guide surface permits the forward end of the film leader to ride across the partition member. A spring urges the partition member toward a position in which it encloses the exposure aperture frame. That spring also releasably retains the partition member on a shaft on which it is pivoted. The partition member has a platform member extending toward the take-up chamber, which has an opening therethrough that provides access to the spring.
Inventors
- 👤 Hiroshi Hara
- 👤 Takashi Tobioka
- 👤 Takeshi Yoshino
- 👤 Tetuo Nishikawa
- 👤 Jiro Sekine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:22
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42; G03B1/48; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
An exposure aperture frame structure defining an exposure aperture for a camera of the type automatically loading a film therein: said frame structure comprising at least a partition member mounted for pivotal movement about an axis perpendicular to the plane in which the film is disposed in the exposure aperture, said member forming a part of said exposure aperture frame which is pivoted about said axis by a film leader and guide means provided at one side of said partition member which has an inclined surface for causing the forward end of said film leader to ride across said parition member, pivotal movement of said partition member being caused by and thereby permitting advancement of said film leader to a film take-up chamber wherein a film is wound automatically onto a film take-up spool.
Claim 2
Dependent Claim
134 words
An exposure aperture frame structure defining an exposure aperture for a camera of the type automatically loading a film therein: said frame structure comprising at least a partition member mounted for pivotal movement about an axis perpendicular to the plane in which the film is disposed in the exposure aperture, said member forming a part of said exposure aperture frame which is pivoted about said axis by a film leader and guide means provided at one side of said partition member which has an inclined surface for causing the forward end of said film leader to ride across said parition member, pivotal movement of said partition member being caused by and thereby permitting advancement of said film leader to a film take-up chamber wherein a film is wound automatically onto a film take-up spool.
Claim 3
Dependent Claim
24 words
An exposure aperture frame structure as defined in claim 1, wherein said partition member is detachably mounted on a shaft fixed to the camera.
Claim 4
Dependent Claim
35 words
An exposure aperture frame structure as defined in claim 2, wherein said partition member is urged by a spring to enclose the exposure aperture frame and is releasably retained on said shaft by said spring.
Claim 5
Dependent Claim
46 words
An exposure aperture frame structure as defined in claim 1, wherein said partition member further includes a platform member at the side opposite to said one side on which said guide means is provided, for smooth advancement of said film leader to said film take-up chamber.
Claim 6
Dependent Claim
51 words
An exposure aperture frame structure as defined in claim 4, wherein said partition member is urged by a spring to enclose the exposure aperture frame and is releasably retained on said shaft by said spring, and said platform member is provided with an access opening therethrough for access to said spring.
Claim 7
Dependent Claim
33 words
An exposure aperture frame structure as defined in claim 1, wherein said partition member is disposed in a plane perpendicular to the plane in which the film is disposed in the exposure aperture.
References Cited (Backward Citations)
US3383068A
Cited
US3463071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |