Patent US5455693A successfully refreshed from Google Patents.
Patent US5359378A successfully refreshed from Google Patents.
US5359378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cassette with lockable light shield
Assignee: Eastman Kodak Co
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Filing: 1994-01-13
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Granted: 1994-10-25
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Expires: 2014-01-13
Abstract
Abstract A film cassette comprises light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position. The light blocking means has a cavity for receiving a driver element in driving engagement to allow the driver element to move the light blocking means from its light blocking position to its non-blocking position. A locking pawl protrudes into the cavity to secure the light blocking means in its light blocking position and is adapted to be displaced from the cavity to release the light blocking means when the driver element is received in the cavity.
Inventors
- 👤 Dennis R. Zander
- 👤 Douglas M. Csaszar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:30
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B2217/00; G03B2217/26; G03B2217/265
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A film cassette comprising light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position, and locking means engages said light blocking means to secure the light blocking means in its light blocking position and is adapted to be moved out of engagement with the light blocking means to release the light blocking means, is characterized in that: said light blocking means has a cavity for receiving a driver element in driving engagement to allow the driver element to move the light blocking means from its light blocking position to its non-blocking position and is open to said locking means to permit the driver element to move the locking means out of engagement with the light blocking means when the driver element is received in said cavity.
Claim 2
Dependent Claim
141 words
A film cassette comprising light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position, and locking means engages said light blocking means to secure the light blocking means in its light blocking position and is adapted to be moved out of engagement with the light blocking means to release the light blocking means, is characterized in that: said light blocking means has a cavity for receiving a driver element in driving engagement to allow the driver element to move the light blocking means from its light blocking position to its non-blocking position and is open to said locking means to permit the driver element to move the locking means out of engagement with the light blocking means when the driver element is received in said cavity.
Claim 3
Dependent Claim
111 words
A film cassette comprising light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position, is characterized in that: said light blocking means has a cavity for receiving a driver element in driving engagement to allow the driver element to move the light blocking means from its light blocking position to its non-blocking position; and a locking pawl protrudes into said cavity to secure said light blocking means in its light blocking position and is adapted to be displaced from the cavity to release the light blocking means when the driver element is received in the cavity.
Claim 4
Dependent Claim
111 words
A film cassette comprising light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position, is characterized in that: said light blocking means has a cavity for receiving a driver element in driving engagement to allow the driver element to move the light blocking means from its light blocking position to its non-blocking position; and a locking pawl protrudes into said cavity to secure said light blocking means in its light blocking position and is adapted to be displaced from the cavity to release the light blocking means when the driver element is received in the cavity.
Claim 5
Dependent Claim
31 words
A film cassette as recited in claim 2, wherein said light blocking means includes a notch for receiving said locking pawl to secure the light blocking means in its non-blocking position.
Claim 6
Dependent Claim
25 words
A film cassette as recited in claim 2, wherein said locking pawl is resilient to permit the locking pawl to be displaced from said cavity.
Claim 7
Dependent Claim
21 words
A film cassette as recited in claim 2 or 4, wherein said locking pawl is integrally formed with a cassette shell.
Claim 8
Dependent Claim
33 words
A film cassette as recited in claim 3, wherein said light blocking means is rotatable between its light blocking and non-blocking positions, and said cavity is located coaxially in said light blocking means.
Claim 9
Dependent Claim
127 words
A driver element to be used with a film cassette that has light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position and has a locking pawl for engaging the light blocking means to secure the light blocking means in its light blocking position, is characterized in that: said driver element is configured to be received in a cavity in the light blocking means to drivingly engage the light blocking means to move the light blocking means from its light blocking position to its non-blocking position and includes cam means for moving the locking pawl out of engagement with the light blocking means when the driver element is received in the cavity.
Claim 10
Dependent Claim
127 words
A driver element to be used with a film cassette that has light blocking means supported for movement to a light blocking position for preventing ambient light from entering the cassette interior and to a non-blocking position and has a locking pawl for engaging the light blocking means to secure the light blocking means in its light blocking position, is characterized in that: said driver element is configured to be received in a cavity in the light blocking means to drivingly engage the light blocking means to move the light blocking means from its light blocking position to its non-blocking position and includes cam means for moving the locking pawl out of engagement with the light blocking means when the driver element is received in the cavity.
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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) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |