US3690582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cartridge
Assignee: Individual
•
Filing: 1970-11-12
•
Granted: 1972-09-12
•
Expires: 1990-11-12
Abstract
Abstract A film cartridge comprising a housing with a spool rotatably mounted therein and film wound upon the spool. The end of the film extends through a slot in the housing to the exterior and a tab or tabs are struck upwardly or downwardly from the film. When the film is rewound on the cartridge, the tab or tabs engage the housing to prevent the end of the film from being wound upon the spool.
Inventors
- 👤 Harvey H Duvall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film spaced from the end thereof normally positioned within said housing and permitting the film to be unwound to bring said means out of said housing and thereafter being operable to prevent the end of the film from being wound completely on said spool when the film is rewound.
Claim 2
Dependent Claim
93 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film spaced from the end thereof normally positioned within said housing and permitting the film to be unwound to bring said means out of said housing and thereafter being operable to prevent the end of the film from being wound completely on said spool when the film is rewound.
Claim 3
Dependent Claim
17 words
The combination set forth in claim 1 wherein said last-mentioned means is operable to engage the housing.
Claim 4
Dependent Claim
17 words
The combination set forth in claim 2 wherein said housing has a tangential extension incorporating said opening.
Claim 5
Dependent Claim
19 words
The combination set forth in claim 1 wherein said last-mentioned means comprises a tab extending outwardly from said film.
Claim 6
Dependent Claim
40 words
The combination set forth in claim 4 wherein said tab is connected to the film at a portion spaced nearer the end of the film than the housing so that the tab extends rearwardly from the end of the film.
Claim 7
Dependent Claim
103 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film adjacent the end thereof operable to prevent the end of the film from being wound completely on said spool comprising an integral tab struck outwardly from said film, said tab being connected to the film at a portion spaced nearer the end than the housing so that the tab extends rearwardly from the free end of the film.
Claim 8
Dependent Claim
103 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film adjacent the end thereof operable to prevent the end of the film from being wound completely on said spool comprising an integral tab struck outwardly from said film, said tab being connected to the film at a portion spaced nearer the end than the housing so that the tab extends rearwardly from the free end of the film.
Claim 9
Dependent Claim
19 words
The combination set forth in claim 6 wherein said tab is formed by a U-shaped slit in said film.
Claim 10
Dependent Claim
114 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film adjacent the end thereof operable to prevent the end of the film from being wound completely on said spool, said last-mentioned means comprising a tab extending outwardly from said film, said tab being connected to the film at a portion spaced nearer the end of the film than the housing so that the tab extends rearwardly from the end of the film, said tab being integral with said film.
Claim 11
Dependent Claim
114 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film adjacent the end thereof operable to prevent the end of the film from being wound completely on said spool, said last-mentioned means comprising a tab extending outwardly from said film, said tab being connected to the film at a portion spaced nearer the end of the film than the housing so that the tab extends rearwardly from the end of the film, said tab being integral with said film.
Claim 12
Dependent Claim
87 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film adjacent the end thereof operable to prevent the end of the film from being wound completely on said spool, said last-mentioned means comprising a tab extending outwardly from said film, p1 said tab being formed by a U-shaped slit in said film.
Claim 13
Dependent Claim
87 words
A film cartridge comprising a housing having closed ends, a spool rotatably mounted within said housing, said housing having an opening in the side thereof through which film may extend, film wound on said spool and extending through said opening, and means on said film adjacent the end thereof operable to prevent the end of the film from being wound completely on said spool, said last-mentioned means comprising a tab extending outwardly from said film, p1 said tab being formed by a U-shaped slit in said film.
References Cited (Backward Citations)
US1996782A
Cited
US2172255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |