Patent US3980254A successfully refreshed from Google Patents.
US3980254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film strip leader alignment aid
Assignee: Western Reserve Electronics Inc
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Filing: 1975-04-03
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Granted: 1976-09-14
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Expires: 1995-04-03
Abstract
Abstract The disclosure relates to an improved means for assuring the proper alignment of the leader on the end of a film strip for a roll of film disposed in a cartridge, whereby, when the cartridge is placed in a viewing or reproducing machine, the end of the strip will be properly picked up and threaded into the machine, wherein the strip has a friction portion that engages with the exit or entrance throat of the cartridge and an indicator on the strip to show when the film is pulled out to the proper position for threading into a machine.
Inventors
- 👤 Donald B. Coon
- 👤 Timothy M. Katanik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:50
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111; G03B21/113
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
124 words
A film positioning means for a film cartridge having a film therein and wherein the cartridge has at least a pair of spaced apart walls defining an exit and entrance throat opening for the passage of the film, the improvement which comprises resilient friction means on the film for increasing the apparent thickness of the film in a zone spaced from the end of the film the right distance to allow the end of the film to be engaged by a reader-printer, said means being thick enough to frictionally and resiliently engage with opposite inner walls of the throat and increase the drag on the film in either direction and position it in the desired extended position but still allow it to pass through.
Claim 2
Dependent Claim
124 words
A film positioning means for a film cartridge having a film therein and wherein the cartridge has at least a pair of spaced apart walls defining an exit and entrance throat opening for the passage of the film, the improvement which comprises resilient friction means on the film for increasing the apparent thickness of the film in a zone spaced from the end of the film the right distance to allow the end of the film to be engaged by a reader-printer, said means being thick enough to frictionally and resiliently engage with opposite inner walls of the throat and increase the drag on the film in either direction and position it in the desired extended position but still allow it to pass through.
Claim 3
Dependent Claim
28 words
A film positioning means as described in claim 1 wherein said zone is formed by a piece of soft resilient material secured to the side of the film.
Claim 4
Dependent Claim
20 words
A film positioning means as described in claim 2 wherein said material is secured to one side of the film.
Claim 5
Dependent Claim
14 words
A film positioning means as described in claim 3, wherein the material is polyurethane.
Claim 6
Dependent Claim
15 words
A film positioning means as described in claim 3 wherein said material is soft felt.
Claim 7
Dependent Claim
23 words
A film positioning means as described in claim 1 wherein the material of the film is displaced to provide highly flexible thickened portions.
Claim 8
Dependent Claim
33 words
A film positioning means as described in claim 1 wherein a visible indicator is disposed on one side of the film to indicate the position to which the film is initially pulled out.
Claim 9
Dependent Claim
18 words
A film positioning means as described in claim 7 wherein said indicator is opposite to said thickened zone.
References Cited (Backward Citations)
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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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |