US4384780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light seal apparatus for a window in a camera back
Assignee: Eastman Kodak Co
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Filing: 1982-03-08
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Granted: 1983-05-24
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Expires: 2002-03-08
Abstract
Abstract In a bottom-loaded camera, a light seal is located between a loading chamber adapted to receive a film cassette and a window in the camera back for viewing film-related information on the loaded cassette. The light seal is movably connected to the camera back in light-sealing engagement therewith and shields film from the cassette against light entering the window. Manual operation of an exterior member, moves the light seal away from the chamber to provide space for loading the cassette in the chamber, and against the cassette to effect a lighttight connection between the camera back and the cassette.
Inventors
- 👤 Richard J. Bresson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B2217/00; G03B2217/26; G03B2217/268
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
95 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber, the improvement comprising: light seal means, movably connected to said camera back in light-sealing engagement therewith, for shielding film from the cassette against light entering said window; and means for moving said light seal means between said camera back and said chamber in respective directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 2
Dependent Claim
95 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber, the improvement comprising: light seal means, movably connected to said camera back in light-sealing engagement therewith, for shielding film from the cassette against light entering said window; and means for moving said light seal means between said camera back and said chamber in respective directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 3
Dependent Claim
116 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber for viewing film-related information on the cassette, the improvement comprising: a bottom door openable to load the cassette endwise in said chamber; light seal means, movably connected to said camera back in light-sealing engagement therewith, for shielding film from the cassette against light entering said window; and manually operable means, movable in opposite directions, for moving said light seal means within said camera in respective directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 4
Dependent Claim
116 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber for viewing film-related information on the cassette, the improvement comprising: a bottom door openable to load the cassette endwise in said chamber; light seal means, movably connected to said camera back in light-sealing engagement therewith, for shielding film from the cassette against light entering said window; and manually operable means, movable in opposite directions, for moving said light seal means within said camera in respective directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 5
Dependent Claim
27 words
The improvement as recited in claim 2, wherein said manually operable means moves said light seal means in opposite directions between said camera back and said chamber.
Claim 6
Dependent Claim
28 words
The improvement as recited in claim 2, wherein said manually operable means includes an exterior push member manually movable to move said light seal means within said camera.
Claim 7
Dependent Claim
41 words
The improvement as recited in claim 2, wherein said manually operable means includes cam follower means fixed to said light seal means and manually operable cam means for imparting motion to said cam follower means for moving said light seal means.
Claim 8
Dependent Claim
116 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber, the improvement comprising: a frame surrounding said window and projecting from said camera back to a location adjacent said chamber; light seal means disposed about said frame for movement along said frame between said camera back and said chamber, for shielding film from the cassette against light entering said window; and manually operable means for moving said light seal means along said frame in opposite directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 9
Dependent Claim
116 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber, the improvement comprising: a frame surrounding said window and projecting from said camera back to a location adjacent said chamber; light seal means disposed about said frame for movement along said frame between said camera back and said chamber, for shielding film from the cassette against light entering said window; and manually operable means for moving said light seal means along said frame in opposite directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 10
Dependent Claim
50 words
The improvement as recited in claim 6, wherein said manually operable means includes a pair of spaced follower pins fixed to said light seal means and a movable slide having a cam finger extending between said pins to impart motion to said light seal means as said slide is moved.
Claim 11
Dependent Claim
27 words
The improvement as recited in claim 7, wherein said cam finger is a spring finger for urging said light seal means against the cassette in said chamber.
Claim 12
Dependent Claim
23 words
The improvement as recited in claim 6, wherein said chamber is adapted to receive the cassette endwise at the bottom of said camera.
Claim 13
Dependent Claim
132 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber for viewing film-related information on the cassette, the improvement comprising: a frame surrounding said window and projecting from said camera back to a location adjacent said chamber; light seal means, disposed about said frame for movement along said frame between said camera back and said chamber, for shielding film from the cassette against light entering said window; and manually operable means, including an exterior push member movable in opposite directions, for moving said light seal means along said frame in respective directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
Claim 14
Dependent Claim
132 words
In a photographic camera of the type wherein a loading chamber is adapted to receive a film cassette, and a camera back has a window opposite said chamber for viewing film-related information on the cassette, the improvement comprising: a frame surrounding said window and projecting from said camera back to a location adjacent said chamber; light seal means, disposed about said frame for movement along said frame between said camera back and said chamber, for shielding film from the cassette against light entering said window; and manually operable means, including an exterior push member movable in opposite directions, for moving said light seal means along said frame in respective directions, away from said chamber, to provide space for loading the cassette in said chamber and, toward said chamber, to shield the film.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |