US5245376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film cassette
Assignee: Fujifilm Holdings Corp
•
Filing: 1992-05-21
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Granted: 1993-09-14
•
Expires: 2012-05-21
Abstract
Abstract A photographic film cassette has a spool, rotation of which causes a film leader to advance outside of a cassette shell. In a receiving recess formed on a spool end for receiving a rewinding shaft of a camera, a pentagonal circumference is formed for receiving a driving force from the rewinding shaft. Inclined planes are formed on the inside of the receiving recess for guiding insertion of the rewinding shaft into the receiving recess. Because the spool is rotated in axial coincidence with the rewinding shaft, the film can be advanced reliably outside of the cassette by slipping the outermost turn of the wound film smoothly with reference to a self-advancing mechanism. In a preferred embodiment, a film cassette is constituted by two shell halves, with one of which a part of the film passage mouth is integrated. A positioning member is integrated with the same shell half for positioning the cassette shell in contact with a receiving member formed in a film loading chamber. The film passage mouth thus can be connected precisely to the film passageway in the camera.
Inventors
- 👤 Koichi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:32
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B2217/00; G03B2217/26; G03B2217/261; G03B2217/266; G03B2217/268
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
143 words
A photographic film cassette for containing photographic film wound around a spool in a cassette shell in light-tight fashion, wherein rotation of said spool causes a film leader to advance through a film passage mouth, said film cassette comprising: a first molded shell component which is part of said cassette shell, with which at least a part of said film passage mouth is integrated; a second shell component joined to said first shell component to form said cassette shell; and three positioning plane surfaces, integrated with said first shell component, and disposed perpendicularly to each other, for positioning said cassette shell in contact with receiving means formed in a film loading chamber in a camera, wherein said positioning plane surfaces are regulated by said receiving means in directions parallel to an axis of said spool and perpendicular to the axis of said spool.
Claim 2
Dependent Claim
143 words
A photographic film cassette for containing photographic film wound around a spool in a cassette shell in light-tight fashion, wherein rotation of said spool causes a film leader to advance through a film passage mouth, said film cassette comprising: a first molded shell component which is part of said cassette shell, with which at least a part of said film passage mouth is integrated; a second shell component joined to said first shell component to form said cassette shell; and three positioning plane surfaces, integrated with said first shell component, and disposed perpendicularly to each other, for positioning said cassette shell in contact with receiving means formed in a film loading chamber in a camera, wherein said positioning plane surfaces are regulated by said receiving means in directions parallel to an axis of said spool and perpendicular to the axis of said spool.
Claim 3
Dependent Claim
53 words
A photographic film cassette as defined in claim 1, wherein said first and second shell components comprise first and second shell halves joined together along a juncture along a plane parallel to said spool, said first and second shell halves respectively having lower and upper portions of said film passage mouth formed thereon.
Claim 4
Dependent Claim
24 words
A photographic film cassette as defined in claim 2, wherein said first and second shell halves are formed of plastic having a light-tight property.
Claim 5
Dependent Claim
68 words
A photographic film cassette as defined in claim 2, wherein said positioning plane surfaces have at least one positioning plane formed on a lateral surface of said first shell half so as to be parallel with respect to the axis of said spool, and another positioning plane formed on a lateral surface of said first shell half so as to be parallel to the axis of said spool.
Claim 6
Dependent Claim
151 words
A photographic film cassette for containing photographic film wound around a spool in a cassette shell in light-tight fashion, wherein rotation of said spool causes a film leader to advance through a film passage mouth, said film cassette comprising: a first molded shell component which is part of said cassette shell, with which at least a part of said film passage mouth is integrated; a second shell component joined to said first shell component to form said cassette shell; and a pair of positioning means, integrated with said first shell component, for positioning said cassette shell in contact with receiving means formed in a film loading chamber in a camera, wherein each positioning means consists of three planes disposed at right angles with respect to each other and, at the same time, two of said three planes are parallel to said spool and the other plane is perpendicular to said spool.
Claim 7
Dependent Claim
151 words
A photographic film cassette for containing photographic film wound around a spool in a cassette shell in light-tight fashion, wherein rotation of said spool causes a film leader to advance through a film passage mouth, said film cassette comprising: a first molded shell component which is part of said cassette shell, with which at least a part of said film passage mouth is integrated; a second shell component joined to said first shell component to form said cassette shell; and a pair of positioning means, integrated with said first shell component, for positioning said cassette shell in contact with receiving means formed in a film loading chamber in a camera, wherein each positioning means consists of three planes disposed at right angles with respect to each other and, at the same time, two of said three planes are parallel to said spool and the other plane is perpendicular to said spool.
Claim 8
Dependent Claim
53 words
A photographic film cassette as defined in claim 5, wherein said first and second shell components comprise first and second shell halves joined together along a juncture along a plane parallel to said spool, said first and second shell halves respectively having lower and upper portions of said film passage mouth formed thereon.
Claim 9
Dependent Claim
24 words
A photographic film cassette as defined in claim 6, wherein said first and second shell halves are formed of plastic having a light-tight property.
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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) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |