US3825939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film transporting mechanism for photographic cameras
Assignee: Agfa Gevaert AG
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Filing: 1973-11-28
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Granted: 1974-07-23
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Expires: 1993-11-28
Abstract
Abstract A still camera wherein a reciprocable actuating member turns the planet carrier of a planetary transmission whereby the ring gear of the transmission rotates the takeup reel in order to effect the transport of roll film by the length of a frame. When the transport of film by the length of a frame is completed, a control lever is automatically disengaged from a second gear which is rotatable by the sun gear of the transmission so that the second gear can rotate in response to further rotation of the planet carrier from a starting position. The camera release can be depressed only when the control lever is disengaged from the second gear and the planet carrier returns to its starting position.
Inventors
- 👤 D Engelsmann
- 👤 D Maas
- 👤 R Schroder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
189 words
In a photographic apParatus, a combination comprising a rotary takeup member arranged to collect exposed film frames; film transporting means including a transmission having input means movable from a starting position, a first rotary output member arranged to rotate said takeup member in a direction to collect the film during one stage of movement of said input means from said starting position, and a second output member arranged to rotate during another stage of movement of said input means; a control member normally engaging said second output member; means for normally disengaging said control member from said second output member in response to completion of film transport by the length of a frame to thereby complete said one stage of movement of said input means from said starting position; and camera release means movable along a predetermined path from an inoperative position to an operative position, said control member extending across said path while in engagement with said second output member so that said release means can move to said operative position only upon completion of said one stage of movement of said input means from said starting position.
Claim 2
Dependent Claim
189 words
In a photographic apParatus, a combination comprising a rotary takeup member arranged to collect exposed film frames; film transporting means including a transmission having input means movable from a starting position, a first rotary output member arranged to rotate said takeup member in a direction to collect the film during one stage of movement of said input means from said starting position, and a second output member arranged to rotate during another stage of movement of said input means; a control member normally engaging said second output member; means for normally disengaging said control member from said second output member in response to completion of film transport by the length of a frame to thereby complete said one stage of movement of said input means from said starting position; and camera release means movable along a predetermined path from an inoperative position to an operative position, said control member extending across said path while in engagement with said second output member so that said release means can move to said operative position only upon completion of said one stage of movement of said input means from said starting position.
Claim 3
Dependent Claim
61 words
A combination as defined in claim 1, wherein said input means is movable back and forth between said starting position and a second position and said control member is movable into and from engagement with said second output member in a predetermined plane which is normal to the direction of movement of said release means between said operative and inoperative positions.
Claim 4
Dependent Claim
82 words
A combination as defined in claim 1 for use with roll film having a row of perforations, one for each film frame, said means for disengaging said control member including a feeler having a scanning portion arranged to engage the film and to penetrate into an oncoming perforation during said one stage of movement of said input means, and means for disengaging said control member from said second output member in response to penetration of said scanning portion into the oncoming perforation.
Claim 5
Dependent Claim
32 words
A combination as defined in claim 1, wherein said second output member is a gear and said control member includes a lever which is pivotable into and from engagement with said gear.
Claim 6
Dependent Claim
46 words
A combination as defined in claim 1, wherein said transmission is a planetary transmission and said input means comprises a portion which constitutes a rotary planet carrier of said transmission, said planet carrier extending across said path except in said starting position of said input means.
Claim 7
Dependent Claim
22 words
A combination as defined in claim 5, wherein said second output member is a gear which is coaxial with said planet carrier.
Claim 8
Dependent Claim
57 words
A combination as defined in claim 6, wherein said input means is movable back and forth between said starting position and a second position and said planet carrier has a recess which registers with said release means and permits a movement of said release means to said operative position in said starting position of said input means.
Claim 9
Dependent Claim
47 words
A combination as defined in claim 1, wherein said second output member is a gear and said control member is pivotable into and from engagement with said gear and extends into said path while holding said gear against rotation in response to movement of said input means.
Claim 10
Dependent Claim
23 words
A combination as defined in claim 1, further comprising overload clutch means interposed between said input means and one of said output members.
Claim 11
Dependent Claim
33 words
A combination as defined in claim 1, further comprising means for biasing said control member into engagement with said second output member and means for biasing said input means to said starting position.
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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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |