US3580152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus
Assignee: Agfa Gevaert AG
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Filing: 1969-04-11
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Granted: 1971-05-25
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Expires: 1989-04-11
Abstract
Abstract A still camera wherein a pivotable and reciprocable slide permits operation of the shutter release when the film is transported by the length of a frame and when the tip of a tracking lever extends into one of a row of perforations on the film. The film transporting wheel is arrested by an arresting lever when the latter is free to engage a ratchet wheel connected to the film transporting wheel. A star wheel which is rigid with the other two wheels can move the slide to inoperative position only when a tooth of the slide extends into one of several notches provided in the periphery of a disc which is connected to the wheels by a friction coupling. The arresting lever is also provided with a tooth which can engage the ratchet wheel only when a lug of the arresting lever extends into another notch of the disc. When the film is removed, the slide is moved to inoperative position and the arresting lever is caused to engage the ratchet wheel when the transporting wheel is rotated through an angle which is smaller than the angle required to advance the film by the length of a frame.
Inventors
- 👤 Dieter Engelsmann
- 👤 Rolf Schroder
- 👤 Erwin Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:20
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
198 words
In a camera for use with film of the type having a row of perforations, one for each film frame, rotary film transporting means; arresting means including a toothed member rotated by said transporting means and in arresting member movable into and from engagement with said toothed member; movable tracking means operatively connected with said arresting member and arranged to track the film during rotation of said transporting means and to thereby enter an oncoming perforation to thus enable said arresting member to engage said toothed member; a double exposure preventing control member movable from a first to a second position in response to rotation of said transporting means; and a regulating member normally rotating with said transporting means and having a plurality of angularly spaced first portions, said control member and said arresting member having complementary portions each engageable with and disengageable from a first portion of said regulating member whereby the complementary portion of said control member effects engagement of said control member with said transporting means and the complementary portion of said arresting member effects engagement of said arresting member with said toothed member when such complementary portions engage first portions of said regulating member.
Claim 2
Dependent Claim
198 words
In a camera for use with film of the type having a row of perforations, one for each film frame, rotary film transporting means; arresting means including a toothed member rotated by said transporting means and in arresting member movable into and from engagement with said toothed member; movable tracking means operatively connected with said arresting member and arranged to track the film during rotation of said transporting means and to thereby enter an oncoming perforation to thus enable said arresting member to engage said toothed member; a double exposure preventing control member movable from a first to a second position in response to rotation of said transporting means; and a regulating member normally rotating with said transporting means and having a plurality of angularly spaced first portions, said control member and said arresting member having complementary portions each engageable with and disengageable from a first portion of said regulating member whereby the complementary portion of said control member effects engagement of said control member with said transporting means and the complementary portion of said arresting member effects engagement of said arresting member with said toothed member when such complementary portions engage first portions of said regulating member.
Claim 3
Dependent Claim
68 words
A structure as defined in claim 1, wherein said toothed member is a ratchet wheel and said regulating member is a disc, said first portions being recesses provided at the periphery of said disc, said film transporting means comprising a second toothed member arranged to move said control member between first and second positions when the complementary portion of said control member extends into one of said recesses.
Claim 4
Dependent Claim
22 words
A structure as defined in claim 2, wherein said complementary portions are teeth provided on said control member and said arresting member.
Claim 5
Dependent Claim
37 words
A structure as defined in claim 1, further comprising friction coupling means connecting said regulating member to said transporting means, said coupling means comprising means for biasing said regulating member against a portion of said transporting means.
Claim 6
Dependent Claim
38 words
A structure as defined in claim 1, wherein the complementary portion of said control member is free to engage with and to receive motion from said transporting means while it engages a first portion of said regulating member.
Claim 7
Dependent Claim
46 words
A structure as defined in claim 1, wherein said arresting member comprises a first projection which is engageable with said transporting means and a second projection which is engageable with a first portion of said regulating member and constitutes the complementary portion of said arresting member.
Claim 8
Dependent Claim
37 words
A structure as defined in claim 1, wherein said transporting means comprises a six-pronged star wheel whose prongs are arranged to move said control member and wherein said regulating member is provided with three equidistant first portions.
Claim 9
Dependent Claim
28 words
A structure as defined in claim 1, further comprising first and second biasing means for respectively urging said control member and said arresting member against said transporting means.
Claim 10
Dependent Claim
37 words
A structure as defined in claim 8, further comprising releaSe means movable from a first to a second position to thereby disengage said control member from said transporting means in stressed condition of said first biasing means.
Claim 11
Dependent Claim
78 words
A structure as defined in claim 9, further comprising locking means movable to and from a locking position in which said control member is held by said locking means against movement under the action of said first biasing means prior to operation of said release means, said control member including a portion arranged to disengage said arresting member from said transporting means in response to movement of said control member under the action of said first biasing 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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |