US4153350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable magazine for motion picture film
Assignee: Agfa Gevaert AG
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Filing: 1975-12-15
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Granted: 1979-05-08
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Expires: 1995-12-15
Abstract
Abstract The housing of a rechargeable magazine for 8-millimeter motion picture film has two chambers one of which contains unexposed and the other of which contains exposed film. The exposed film is convoluted on a core which is rotatable in the other chamber and is coaxial with a stationary core for unexposed film. The rotary core carries an elastic pawl which normally engages one of several internal teeth in an annular internal sleeve of the housing to prevent rotation of such core in a direction to pay out the film. The rotary core further comprises a flange which overlies the pawl and has an opening through which the pawl can be reached by a tool in order to allow for deformation of the pawl so that the rotary core can be rotated in a direction to pay out exposed film. The rotary core defines with the sleeve a labyrinth seal and the opening is normally sealed by an opaque foil of elastomeric material which can be flexed by the tool in order to move a projection of the tool into engagement with a complementary projection on the elastic pawl. The housing has a removable cover which affords access to the chamber for unexposed film so that the latter chamber can be loaded with fresh film upon completed exposure of the previously inserted film. The elastic pawl can be broken off the rotary core when the latter is forcibly turned in a direction to pay out the film so that the magazine can be used in cameras which are designed to make exposures with lap dissolve, i.e., wherein the film frames which were exposed with fade-out effect must be transported rearwardly prior to exposure but with fade-in effect.
Inventors
- 👤 Rudolf Blank
- 👤 Achim Kluczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:55
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/26; G03B17/265
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
183 words
A rechargeable magazine for roll film, particularly for 8-millimeter motion picture film, comprising a housing member defining a chamber for a supply of convoluted film; a core member rotatably mounted in said housing member to support the convoluted film in said chamber; blocking means including a first portion arranged to rotate with said core member and a second portion provided in said housing member in the path of movement of said first portion to thereby normally prevent rotation of said core member in one direction, at least one of said portions being movable relative to the other portion to an inoperative position in which said first portion is free to bypass said second portion to thus permit a rotation of said core member in said one direction, at least one of said members having at least one opening affording access to said one portion so as to enable a tool to reach and move said one portion to said inoperative position without destruction or breakage of said members; and means for preventing entry of light into said chamber by way of said opening.
Claim 2
Dependent Claim
183 words
A rechargeable magazine for roll film, particularly for 8-millimeter motion picture film, comprising a housing member defining a chamber for a supply of convoluted film; a core member rotatably mounted in said housing member to support the convoluted film in said chamber; blocking means including a first portion arranged to rotate with said core member and a second portion provided in said housing member in the path of movement of said first portion to thereby normally prevent rotation of said core member in one direction, at least one of said portions being movable relative to the other portion to an inoperative position in which said first portion is free to bypass said second portion to thus permit a rotation of said core member in said one direction, at least one of said members having at least one opening affording access to said one portion so as to enable a tool to reach and move said one portion to said inoperative position without destruction or breakage of said members; and means for preventing entry of light into said chamber by way of said opening.
Claim 3
Dependent Claim
24 words
A magazine as defined in claim 1, wherein said means for preventing entry of light into said chamber comprises at least one labyrinth seal.
Claim 4
Dependent Claim
73 words
A magazine as defined in claim 1, wherein said means for preventing entry of light into said chamber comprises a closure for said opening, said closure normally assuming a sealing position to prevent penetration of light from said opening into said chamber and being movable by the tool, without any destruction or breakage of said closure, to a second position in which the tool can reach said one portion of said blocking means.
Claim 5
Dependent Claim
17 words
A magazine as defined in claim 3, wherein said closure includes an opaque foil of elastomeric material.
Claim 6
Dependent Claim
43 words
A magazine as defined in claim 1, wherein said one direction is the direction in which said core member rotates to pay out the convoluted film and said one portion of said blocking means consists at least in part of an elastomeric material.
Claim 7
Dependent Claim
85 words
A magazine as defined in claim 1, wherein said second portion of said blocking means comprises at least one internal tooth provided in said housing member and said first portion of said blocking means comprises an elastic pawl having a pallet which is moved into engagement with and is thereby arrested by said tooth in response to rotation of said core member in said one direction, said pawl constituting said one portion of said blocking means and said opening being provided in said core member.
Claim 8
Dependent Claim
102 words
A magazine as defined in claim 1, wherein said housing member further defines a second chamber, and further comprising a second core member provided in said second chamber coaxially with said first mentioned core member, said supply of convoluted film constituting the exposed length of an elongated web of photographic film which extends from said first mentioned chamber into said second chamber and includes an unexposed second length rotatable on said second core member, the rotation of said first mentioned core member in the other direction resulting in the transport of said web from said second chamber into said first mentioned chamber.
Claim 9
Dependent Claim
50 words
A magazine as defined in claim 1, wherein said housing includes a wall having bearing means rotatably supporting said core member, said core member surrounding said bearing means and having an external surface, said first portion of said blocking means being adjacent to said external surface of said core member.
Claim 10
Dependent Claim
33 words
A magazine as defined in claim 8, wherein said wall further comprises an annular portion spacedly surrounding said external surface of said core member and supporting said second portion of said blocking means.
Claim 11
Dependent Claim
31 words
A magazine as defined in claim 9, wherein said core member comprises a flange overlying at least one portion of said blocking means and said opening is provided in said flange.
Claim 12
Dependent Claim
61 words
A magazine as defined in claim 10, wherein said one portion of said blocking means is said first portion and said first portion includes a projection extending into said opening for engagement with a complementary projection of a tool upon insertion of the complementary projection into said opening to thereby move said first portion out of register with said second portion.
Claim 13
Dependent Claim
41 words
A magazine as defined in claim 1, wherein at least one portion of said blocking means is at least partially separable from the respective member in response to rotation of said core member in said one direction with a predetermined force.
Claim 14
Dependent Claim
19 words
A magazine as defined in claim 12, wherein said separable portion is said first portion of said blocking means.
Claim 15
Dependent Claim
35 words
A magazine as defined in claim 12, wherein said separable portion of said blocking means includes at least one weakened part along said separable portion breaks in response to the application of said predetermined force.
Claim 16
Dependent Claim
24 words
A magazine as defined in claim 12, wherein said separable portion of said blocking means consists at least in part of an elastomeric material.
Claim 17
Dependent Claim
220 words
A rechargeable magazine for roll film, particularly for 8-millimeter motion picture film, comprising a housing member defining a chamber for a supply of convoluted film; a core member rotatably mounted in said housing member to support the convoluted film in said chamber; blocking means including a first portion arranged to rotate with said core member and a second portion provided in said housing member in the path of movement of said first portion to thereby normally prevent rotation of said core member in one direction, at least one of said portions being movable relative to the other portion to an inoperative position in which said first portion is free to bypass said second portion to thus permit rotation of said core member in said one direction, at least one of said members having at least one access opening affording access to said blocking means; and light-excluding means for preventing entry of light into said chamber through said access opening, said one portion, said access opening and said light-excluding means being so arranged and disposed relative to one another as to enable a tool to pass through said access opening and reach and move said one portion to said inoperative position without destruction or breakage of said light-excluding means and without interruption of the light-excluding action afforded by said light-excluding means.
Claim 18
Dependent Claim
220 words
A rechargeable magazine for roll film, particularly for 8-millimeter motion picture film, comprising a housing member defining a chamber for a supply of convoluted film; a core member rotatably mounted in said housing member to support the convoluted film in said chamber; blocking means including a first portion arranged to rotate with said core member and a second portion provided in said housing member in the path of movement of said first portion to thereby normally prevent rotation of said core member in one direction, at least one of said portions being movable relative to the other portion to an inoperative position in which said first portion is free to bypass said second portion to thus permit rotation of said core member in said one direction, at least one of said members having at least one access opening affording access to said blocking means; and light-excluding means for preventing entry of light into said chamber through said access opening, said one portion, said access opening and said light-excluding means being so arranged and disposed relative to one another as to enable a tool to pass through said access opening and reach and move said one portion to said inoperative position without destruction or breakage of said light-excluding means and without interruption of the light-excluding action afforded by said light-excluding means.
Claim 19
Dependent Claim
25 words
A magazine as defined in claim 16, wherein said light-excluding means for preventing entry of light into said chamber comprises at least one labyrinth seal.
Claim 20
Dependent Claim
88 words
A magazine as defined in claim 16, wherein said light-excluding means for preventing entry of light into said chamber comprises a light-excluding closure for said access opening, said closure normally assuming a sealing position to prevent penetration of light from said opening into said chamber and being movable by the tool, without any destruction or breakage of said closure and without any interruption of the light-excluding action afforded by said closure, to a second position in which the tool can reach said one portion of said blocking means.
Claim 21
Dependent Claim
82 words
A magazine as defined in claim 18, wherein said light-excluding closure comprises an elastically deformable opaque foil closing off and excluding light from passing through said access opening, said elastically deformable opaque foil being so arranged and having a deformability such as to enable a tool to reach and move said one portion to said inoperative position without destruction or breakage of said elastically deformable opaque foil and without any interruption in the light-excluding action afforded by said elastically deformable opaque foil.
Claim 22
Dependent Claim
43 words
A magazine as defined in claim 16, wherein said one direction is the direction in which said core member rotates to pay out the convoluted film and said one portion of said blocking means consists at least in part of an elastomeric material.
Claim 23
Dependent Claim
102 words
A magazine as defined in claim 16, wherein said housing member further defines a second chamber, and further comprising a second core member provided in said second chamber coaxially with said first mentioned core member, said supply of convoluted film constituting the exposed length of an elongated web of photographic film which extends from said first mentioned chamber into said second chamber and includes an unexposed second length rotatable on said second core member, the rotation of said first mentioned core member in the other direction resulting in the transport of said web from said second chamber into said first mentioned chamber.
Claim 24
Dependent Claim
41 words
A magazine as defined in claim 16, wherein at least a portion of said blocking means is at least partially separable from the respective member in response to rotation of said core member in said one direction with a predetermined force.
Claim 25
Dependent Claim
19 words
A magazine as defined in claim 22, wherein said separable portion is said first portion of said blocking means.
Claim 26
Dependent Claim
36 words
A magazine as defined in claim 22, wherein said separable portion of said blocking means includes at least one weakened part along which said separable portion breakes in response to the application of said predetermined force.
Claim 27
Dependent Claim
24 words
A magazine as defined in claim 22, wherein said separable portion of said blocking means consists at least in part of an elastomeric material.
Claim 28
Dependent Claim
68 words
A magazine as defined in claim 16, said access opening having a periphery defined by boundary surface portions of at least one of said members, and said light-excluding means being in engagement with all such boundary surface portions so as to cover the entirety of said access opening before, while and after a tool passes through said access opening and moves said one portion of said inoperative position.
Claim 29
Dependent Claim
71 words
A magazine as defined in claim 16, said access opening having a periphery defined by boundary surface portions of at least one of said members, and said light-excluding means comprising a closure member in engagement with all such boundary surface portions so as to cover the entirety of said access opening before, while and after a tool passes through said access opening and moves said one portion to said inoperative position.
Claim 30
Dependent Claim
40 words
A magazine as defined in claim 16, wherein said light-excluding means is mounted for movement by and in the direction of movement of a tool which passes through said access opening and moves said one portion to said inoperative position.
Claim 31
Dependent Claim
44 words
A magazine as defined in claim 16, wherein said light-excluding means is a generally flat closure mounted for movement in direction transverse to its general plane by a tool which passes through said access opening and moves said one portion to said inoperative 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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |