US3700316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cinematographic film magazine
Assignee: Fujifilm Holdings Corp
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Filing: 1971-09-03
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Granted: 1972-10-24
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Expires: 1991-09-03
Abstract
Abstract A plurality of grooves, in which the upright portion of a magazine stopper fits, are provided in the outer wall of a cinematographic film magazine between the take-up and supply shafts thereof, and the magazine, when placed on the magazine stopper, is balanced at one of the grooves, and detecting the amount of unexposed film in the magazine occurs by reading the graduation corresponding to the groove.
Inventors
- 👤 Taichi Kurechi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:16
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
117 words
In a cinematographic film magazine incorporating a take-up and a supply reel with a film threaded at respective ends thereto and reelable therebetween, the improvement comprising: a plurality of spaced parallel grooves formed within said film magazine wall intermediate of said reels and at right angles to a line passing through the reel axes; each groove being identified by an accompanying indicia each of said plurality of grooves being so spaced relative to the supply and take-up reels that the weight of the magazine and film is equally divided on each side of a given groove when the distribution of the film between the supply and take-up reels is as indicated by the indicia adjacent said groove.
Claim 2
Dependent Claim
117 words
In a cinematographic film magazine incorporating a take-up and a supply reel with a film threaded at respective ends thereto and reelable therebetween, the improvement comprising: a plurality of spaced parallel grooves formed within said film magazine wall intermediate of said reels and at right angles to a line passing through the reel axes; each groove being identified by an accompanying indicia each of said plurality of grooves being so spaced relative to the supply and take-up reels that the weight of the magazine and film is equally divided on each side of a given groove when the distribution of the film between the supply and take-up reels is as indicated by the indicia adjacent said groove.
Claim 3
Dependent Claim
26 words
The film magazine as claimed in claim 1, further including a right angle member whose edge has dimensions on the order of those of said grooves.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |