US3922700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cassette
Assignee: Fujifilm Holdings Corp
•
Filing: 1974-02-06
•
Granted: 1975-11-25
•
Expires: 1994-02-06
Abstract
Abstract A film cassette for containing monosheets which comprises a protective case having a front opening through which a foremost monosheet in said cassette may be exposed, sheet having a lightproof portion and an open or transparent portion provided between said front opening of said case, and the position which the foremost monosheet is in when said cassette is loaded and means for moving said sheet back and forth between a position in which said light-proof portion is in line with said front opening, and a position in which said open or transparent portion is in line with said front opening.
Inventors
- 👤 Yoshio Asano
- 👤 Kazunobu Kato
- 👤 Yasumichi Ito
- 👤 Kazutaka Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:18
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/32; G03B17/34
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
244 words
A film cassette for containing monosheets or similar films, said cassette comprising: 1. a protective case made of a light-proof material in which monosheets may be packed and having a. a front opening through which light may be passed to expose a foremost monosheet in said case and b. an extraction outlet which is in line with the position of a foremost monosheet in said case and through which such a foremost monosheet may be withdrawn from said case; 2. a pressure means for urging monosheets in said case towards the front of said case, whereby successive monosheets may be brought to the foremost position for exposure; 3. a movable light-proof sheet within said case for protecting monosheets in said case from exposure to light; 4. a means for removing said light-proof sheet from said front opening of said case to expose the foremost monosheet in said case to light; 5. an extraction outlet cover normally sealing said extraction outlet but actuable to open said extraction outlet when the foremost monosheet is withdrawn from said case; 6. a recharge inlet formed at the opposite side of said case from said extraction outlet, whereby monosheets may be supplied into said case; 7. a recharge inlet cover normally sealing said recharge inlet but actuable to open said recharge inlet; and 8. an externally actuable drive means for drawing the foremost monosheet in said case through said extraction outlet when the cassette is mounted in a camera.
Claim 2
Dependent Claim
244 words
A film cassette for containing monosheets or similar films, said cassette comprising: 1. a protective case made of a light-proof material in which monosheets may be packed and having a. a front opening through which light may be passed to expose a foremost monosheet in said case and b. an extraction outlet which is in line with the position of a foremost monosheet in said case and through which such a foremost monosheet may be withdrawn from said case; 2. a pressure means for urging monosheets in said case towards the front of said case, whereby successive monosheets may be brought to the foremost position for exposure; 3. a movable light-proof sheet within said case for protecting monosheets in said case from exposure to light; 4. a means for removing said light-proof sheet from said front opening of said case to expose the foremost monosheet in said case to light; 5. an extraction outlet cover normally sealing said extraction outlet but actuable to open said extraction outlet when the foremost monosheet is withdrawn from said case; 6. a recharge inlet formed at the opposite side of said case from said extraction outlet, whereby monosheets may be supplied into said case; 7. a recharge inlet cover normally sealing said recharge inlet but actuable to open said recharge inlet; and 8. an externally actuable drive means for drawing the foremost monosheet in said case through said extraction outlet when the cassette is mounted in a camera.
Claim 3
Dependent Claim
27 words
a pressure means for urging monosheets in said case towards the front of said case, whereby successive monosheets may be brought to the foremost position for exposure;
Claim 4
Dependent Claim
27 words
a pressure means for urging monosheets in said case towards the front of said case, whereby successive monosheets may be brought to the foremost position for exposure;
Claim 5
Dependent Claim
30 words
A film cassette as recited in claim 1, wherein said cover for sealing said recharge inlet is actuable by a means provided in a camera to open said recharge inlet.
Claim 6
Dependent Claim
104 words
A film cassette as recited in claim 1, wherein said recharge inlet has a shape complementary to that of said extraction outlet, whereby said recharge inlet of a first cassette as claimed hereby is capable of fitting into said extraction outlet of a second cassette as claimed hereby, permitting monosheets in said second cassette to be supplied into said first cassette through said extraction outlet of the second cassette and said recharge inlet of the first cassette when both said cover for sealing said extraction outlet of the second cassette and said cover for sealing said recharge inlet of the first cassette are opened.
Claim 7
Dependent Claim
17 words
a movable light-proof sheet within said case for protecting monosheets in said case from exposure to light;
Claim 8
Dependent Claim
17 words
a movable light-proof sheet within said case for protecting monosheets in said case from exposure to light;
Claim 9
Dependent Claim
24 words
a means for removing said light-proof sheet from said front opening of said case to expose the foremost monosheet in said case to light;
Claim 10
Dependent Claim
24 words
a means for removing said light-proof sheet from said front opening of said case to expose the foremost monosheet in said case to light;
Claim 11
Dependent Claim
50 words
A film cassette as recited in claim 1 and further comprising a means for engaging and drawing aside end portions of monosheets contained in said case upon opening of said recharge inlet cover to make it easy to supply monosheets without hindrance into said case through the recharge inlet thereof.
Claim 12
Dependent Claim
25 words
an extraction outlet cover normally sealing said extraction outlet but actuable to open said extraction outlet when the foremost monosheet is withdrawn from said case;
Claim 13
Dependent Claim
25 words
an extraction outlet cover normally sealing said extraction outlet but actuable to open said extraction outlet when the foremost monosheet is withdrawn from said case;
Claim 14
Dependent Claim
23 words
a recharge inlet formed at the opposite side of said case from said extraction outlet, whereby monosheets may be supplied into said case;
Claim 15
Dependent Claim
23 words
a recharge inlet formed at the opposite side of said case from said extraction outlet, whereby monosheets may be supplied into said case;
Claim 16
Dependent Claim
17 words
a recharge inlet cover normally sealing said recharge inlet but actuable to open said recharge inlet; and
Claim 17
Dependent Claim
17 words
a recharge inlet cover normally sealing said recharge inlet but actuable to open said recharge inlet; and
Claim 18
Dependent Claim
25 words
an externally actuable drive means for drawing the foremost monosheet in said case through said extraction outlet when the cassette is mounted in a camera.
Claim 19
Dependent Claim
25 words
an externally actuable drive means for drawing the foremost monosheet in said case through said extraction outlet when the cassette is mounted in a camera.
References Cited (Backward Citations)
US3872485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |