US3623679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus and film magazine therefor
Assignee: Agfa Gevaert AG
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Filing: 1969-11-20
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Granted: 1971-11-30
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Expires: 1989-11-20
Abstract
Abstract A magazine for motion-picture film which comprises a casing having first and second chambers for convoluted exposed and unexposed film, a core member rotatable in the first chamber and coaxial with unexposed film in the second chamber to respectively collect and pay out exposed film during rotation in first and second directions, and a blocking device including a sleeve movable axially of but rotatable with the core member and a disk mounted in the casing. A spring biases the sleeve into engagement with the disk to hold the core member against rotation in the second direction. A rotary output member of a drive in the camera moves the sleeve axially and away from engagement with the disk when the magazine is properly attached to the camera whereby the core member can be rotated in either direction as long as the magazine remains attached to the camera.
Inventors
- 👤 Karl Neudecker
- 👤 Johann Zanner
- 👤 Alois Schwitz
- 👤 Rudolf Blank
- 👤 Ehgartner Gabriele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/26; G03B17/265; A; A01; A01K; A01K31/00; A01K31/06
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
135 words
In a magazine for motion-picture film wherein unexposed film is stored coaxially with exposed film, a combination comprising a casing defining first and second chambers respectively arranged to accommodate exposed and unexposed film; a core member rotatably accommodated in said first chamber to collect exposed film while rotating in a first direction and to pay out exposed film while rotating in a second direction; and blocking means comprising a first blocking element mounted in said casing and a second blocking element rotatable with said core member, one of said elements being movably substantially axially of said core member between a first position in which said elements cooperate to hold said core member against rotation in said second direction and a second position in which said core member is free to rotate in said second direction.
Claim 2
Dependent Claim
135 words
In a magazine for motion-picture film wherein unexposed film is stored coaxially with exposed film, a combination comprising a casing defining first and second chambers respectively arranged to accommodate exposed and unexposed film; a core member rotatably accommodated in said first chamber to collect exposed film while rotating in a first direction and to pay out exposed film while rotating in a second direction; and blocking means comprising a first blocking element mounted in said casing and a second blocking element rotatable with said core member, one of said elements being movably substantially axially of said core member between a first position in which said elements cooperate to hold said core member against rotation in said second direction and a second position in which said core member is free to rotate in said second direction.
Claim 3
Dependent Claim
34 words
A combination as defined in claim 1, wherein said one blocking element is said second blocking element and wherein said first blocking element has limited freedom of movement substantially radially of said core member.
Claim 4
Dependent Claim
54 words
A combination as defined in claim 1, wherein said first blocking element comprises a first number of projections and said second blocking element comprises a second number of projections cooperating with said first-mentioned projections to hold said core member against rotation in said second direction in the first position of said one blocking element.
Claim 5
Dependent Claim
34 words
A combination as defined in claim 1, wherein said one blocking element is arranged to move from said first to said second position in response to attachment of the magazine to a motion-picture camera.
Claim 6
Dependent Claim
101 words
A combination as defined in claim 1, wherein said blocking eLements comprise projections which cooperate to hold the core member against rotation in said second direction in the first position of said one blocking element, the projections of said one element being movable axially of projections of the other blocking element in response to attachment of the magazine to a motion-picture camera whereby the projections of said one element are moved away from registry with the projections of said other element when the one blocking element assumes said second position in response to proper attachment of the magazine to such camera.
Claim 7
Dependent Claim
24 words
A combination as defined in claim 1, further comprising biasing means arranged to yieldably urge said one blocking element to said first position thereof.
Claim 8
Dependent Claim
29 words
A combination as defined in claim 1, wherein said one blocking element comprises a sleeve which is coupled for rotation with and is movable axially of said core member.
Claim 9
Dependent Claim
31 words
A combination as defined in claim 1, wherein said casing includes a portion having an opening and wherein said one blocking element extends into said opening in the first position thereof.
Claim 10
Dependent Claim
37 words
A combination as defined in claim 1, wherein said core member is provided with at least one torque-receiving portion which is accessible from without said casing, at least in the second position of said one blocking element.
Claim 11
Dependent Claim
30 words
A combination as defined in claim 9, wherein said one blocking element is provided with recess means accommodating said torque-receiving portion in the first position of said one blocking element.
Claim 12
Dependent Claim
61 words
A combination as defined in claim 1, wherein said one blocking element comprises torque-receiving means which can be rotated by an output member of a motion-picture camera when said one blocking element assumes said second position and the magazine is properly attached to such camera whereby the output member can rotate said core member by way of said one blocking element.
Claim 13
Dependent Claim
189 words
In a motion-picture camera, a combination comprising a housing; a magazine for motion-picture film including a casing defining first and second chambers respectively arranged to accommodate exposed and unexposed film so that the exposed film is stored coaxially with unexposed film, a core member rotatable in said first chamber to collect exposed film while rotating in a first direction and to pay out exposed film while rotating in a second direction, and blocking means comprising a first blocking element mounted in said casing and a second blocking element rotatable with said core member, one of said elements being movably substantially axially of said core member between a first position in which said elements cooperate to hold said core member against rotation in said second direction and a second position in which said core member is free to rotate in said second direction, said casing being movable with reference to said housing between an operative and an inoperative position; and actuating means provided in said housing and operative to move said one blocking element to said second position in response to movement of said casing to said operative position thereof.
Claim 14
Dependent Claim
189 words
In a motion-picture camera, a combination comprising a housing; a magazine for motion-picture film including a casing defining first and second chambers respectively arranged to accommodate exposed and unexposed film so that the exposed film is stored coaxially with unexposed film, a core member rotatable in said first chamber to collect exposed film while rotating in a first direction and to pay out exposed film while rotating in a second direction, and blocking means comprising a first blocking element mounted in said casing and a second blocking element rotatable with said core member, one of said elements being movably substantially axially of said core member between a first position in which said elements cooperate to hold said core member against rotation in said second direction and a second position in which said core member is free to rotate in said second direction, said casing being movable with reference to said housing between an operative and an inoperative position; and actuating means provided in said housing and operative to move said one blocking element to said second position in response to movement of said casing to said operative position thereof.
Claim 15
Dependent Claim
43 words
A combination as defined in claim 12, further comprising drive means installed in said housing and operative to rotate said core member in said first direction in operative position of said casing, said actuating means constituting the output member of said drive means.
Claim 16
Dependent Claim
71 words
A combination as defined in claim 13, wherein said drive means further comprises reversible prime mover means and torque-transmitting means interposed between said prime mover means and said output member to rotate said core member in said first direction when said prime mover means is operated in one direction and to permit rotation of said core member in said second direction while said prime mover means is operated in another direction.
Claim 17
Dependent Claim
15 words
A combination as defined in claim 14, wherein said torque-transmitting means comprises one-way clutch means.
Claim 18
Dependent Claim
19 words
A combination as defined in claim 15, wherein said one-wAy clutch means comprises a pair of toothed clutch elements.
Claim 19
Dependent Claim
45 words
A combination as defined in claim 15, wherein said one-way clutch means comprises a driven clutch element operatively connected with said output member and a driving clutch element arranged to rotate said driven element when said prime mover means is operated in said one direction.
Claim 20
Dependent Claim
21 words
A combination as defined in claim 17, wherein one of said clutch elements is movable axially of the other clutch element.
Claim 21
Dependent Claim
62 words
A combination as defined in claim 18, wherein one of said clutch elements is provided with at least one cutout and the other clutch element is provided with at least one claw which enters said cutout to rotate said driven element on axial movement of said movable clutch element in response to operation of said prime mover means in said one direction.
Claim 22
Dependent Claim
21 words
A combination as defined in claim 14, further comprising friction clutch means interposed between said torque-transmitting means and said output member.
Claim 23
Dependent Claim
25 words
A combination as defined in claim 12, wherein said actuating means comprises a member which is rotatable in a clockwise and in a counterclockwise direction.
Claim 24
Dependent Claim
134 words
In a motion-picture camera, a combination comprising a housing; a magazine movable with reference to said housing to and from an operative position and including a casing arranged to accommodate coaxial supplies of exposed and unexposed film, a core member rotatable in said casing to collect exposed film while rotating in a first direction, and to pay out exposed film while rotating in a second direction, and a plurality of blocking elements provided in said casing and having blocking portions cooperating to hold the core member against rotation in one of said directions, one of said blocking elements being movable to an idle position in which said core member is free to rotate in either of said directions; and means provided in said housing for moving said one blocking element to said idle position.
Claim 25
Dependent Claim
134 words
In a motion-picture camera, a combination comprising a housing; a magazine movable with reference to said housing to and from an operative position and including a casing arranged to accommodate coaxial supplies of exposed and unexposed film, a core member rotatable in said casing to collect exposed film while rotating in a first direction, and to pay out exposed film while rotating in a second direction, and a plurality of blocking elements provided in said casing and having blocking portions cooperating to hold the core member against rotation in one of said directions, one of said blocking elements being movable to an idle position in which said core member is free to rotate in either of said directions; and means provided in said housing for moving said one blocking element to said idle position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |