Patent US3603236A successfully refreshed from Google Patents.
US3603236A
Expired / Lapsed
US
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Film metering and shutter cocking device
Assignee: Agfa Gevaert AG
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Filing: 1969-07-31
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Granted: 1971-09-07
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Expires: 1989-07-31
Abstract
Abstract A still camera wherein a pivotable detector scans the moving film and enters a perforation to stress a spring during further transport of the film. The thus cocked detector releases a blocking slide which then prevents further transport of the film and permits actuation of a camera release which in turn permits the detector to leave its cocked position and to thereby open the shutter. The detector is mounted on a control lever which is pivotable by the camera release to thereby disengage the detector from the film. The blocking slide is reset by the detector during opening of the shutter.
Inventors
- 👤 Dieter Engelsmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:01
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
165 words
In a photographic apparatus wherein the housing accommodates a takeup device which is rotatable to transport the film and wherein the film is provided with a row of perforations, a combination comprising blocking means movable between a first position in which it prevents rotation of the takeup device and a second position; detector means having a scanning portion operative to track the film during transport and to enter a perforation to thereby effect movement of said detector means to a cocked position, and a second portion operative to effect movement of said blocking means to said first position in the cocked position of said detector means; release means actuatable to move from a first to a second position and to thereby effect movement of said detector means from cocked position; and shutter means movable from a closed to an open position, said detector means being arranged to move said shutter means to open position in response to movement of said detector means from cocked position.
Claim 2
Dependent Claim
165 words
In a photographic apparatus wherein the housing accommodates a takeup device which is rotatable to transport the film and wherein the film is provided with a row of perforations, a combination comprising blocking means movable between a first position in which it prevents rotation of the takeup device and a second position; detector means having a scanning portion operative to track the film during transport and to enter a perforation to thereby effect movement of said detector means to a cocked position, and a second portion operative to effect movement of said blocking means to said first position in the cocked position of said detector means; release means actuatable to move from a first to a second position and to thereby effect movement of said detector means from cocked position; and shutter means movable from a closed to an open position, said detector means being arranged to move said shutter means to open position in response to movement of said detector means from cocked position.
Claim 3
Dependent Claim
60 words
A combination as defined in claim 1, wherein said blocking means comprises a portion which extends into the path of movement of said release means from the first to the second position of said release means in the second position of said blocking means and thus prevents actuation of said release means in the second position of said blocking means.
Claim 4
Dependent Claim
178 words
In a photographic apparatus wherein the housing accommodates a takeup device which is rotatable to transport the film and wherein the film is provided with a row of perforations, a combination comprising blocking means movable between a first position in which it prevents rotation of the takeup device and a second position; detector means having a scanning portion operative to track the film during transport and to enter a perforation to thereby effect movement of said detector means to a cocked position, and a second portion operative to effect movement of said blocking means to said first position in the cocked position of said detector means; release means actuatable to effect movement of said detector means; from said cocked position; shutter means movable from a closed to an open position in response to movement of said detector means from said cocked position; control means pivotable about a first axis and defining a second axis for pivotal movement of said detector means to and from said cocked position; and means for biasing said detector means from said cocked position.
Claim 5
Dependent Claim
178 words
In a photographic apparatus wherein the housing accommodates a takeup device which is rotatable to transport the film and wherein the film is provided with a row of perforations, a combination comprising blocking means movable between a first position in which it prevents rotation of the takeup device and a second position; detector means having a scanning portion operative to track the film during transport and to enter a perforation to thereby effect movement of said detector means to a cocked position, and a second portion operative to effect movement of said blocking means to said first position in the cocked position of said detector means; release means actuatable to effect movement of said detector means; from said cocked position; shutter means movable from a closed to an open position in response to movement of said detector means from said cocked position; control means pivotable about a first axis and defining a second axis for pivotal movement of said detector means to and from said cocked position; and means for biasing said detector means from said cocked position.
Claim 6
Dependent Claim
35 words
A combination as defined in claim 3, further comprising means for connecting said detector means to said control means with limited freedom of translatory movement of said detector means with reference to said control means.
Claim 7
Dependent Claim
33 words
A combination as defined in claim 3, wherein the second portion of said detector means holds said blocking means against movement from second to first position in uncocked position of said detector means.
Claim 8
Dependent Claim
35 words
A combination as defined in claim 5, wherein said detector means further comprises a third portion which moves said shutter means to open position in response to movement of said detector means from cocked position.
Claim 9
Dependent Claim
37 words
A combination as defined in claim 3, wherein said release means comprises means for pivoting said control means to thereby withdraw said scanning portion from a perforation of the film in cocked position of said detector means.
Claim 10
Dependent Claim
101 words
A combination as defined in claim 1, wherein said blocking means is reciprocable between said first and second positions and further comprising spring means for biasing said blocking means to said first position, said blocking means comprising a first portion which engages the takeup device in the first position of said blocking means, a second portion which prevents actuation of said release means in the second position of said blocking means, and a third portion which cooperates with the second portIon of said detector means to hold said blocking means in said second position in uncocked position of said detector means.
Claim 11
Dependent Claim
40 words
A combination as defined in claim 8, wherein the takeup device comprises a ratchet wheel and wherein the first portion of said blocking means comprises a pawl which engages said ratchet wheel in the first position of said blocking means.
Claim 12
Dependent Claim
45 words
A combination as defined in claim 8, wherein said blocking means further comprises a fourth portion which is engaged by said detector means during movement from cocked position to effect movement of said blocking means to second position and to thereby stress said spring means.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |