US4949111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera having film-driven motion transmitting mechanism
Assignee: Eastman Kodak Co
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Filing: 1989-09-11
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Granted: 1990-08-14
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Expires: 2009-09-11
Abstract
Abstract A photographic camera wherein a film metering sprocket undergoes respective cylces of rotation in each of two opposite directions when a filmstrip is advanced substantially a frame increment in reverse directions over the metering sprocket, and an operating element is actuated to perform a camera function when the metering sprocket is rotated a cycle in one of the opposite directions but is not actuated for such purpose when the metering sprocket is rotated a cycle in the other direction, is characterized in that the metering sprocket and the operating element are disposed in a coaxial relation and include one-way motion transmitting means which when the metering sprocket is rotated a cycle in the one direction engages to compel the metering sprocket to rotate the operating element continuously in the same direction but which when the metering sprocket is rotated a cycle in the other direction does not engage in order to permit the metering sprocket to rotate independently of the operating element.
Inventors
- 👤 John H. Alligood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:05
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/60; G03B1/62; G03B1/02; G03B1/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
189 words
A photographic camera wherein a film metering sprocket undergoes respective cycles of rotation in each of two opposite directions when a filmstrip is advanced substantially a frame increment in corresponding directions over said metering sprocket, and an operating element is actuated to perform a camera function when said metering sprocket is rotated a cycle in one of the opposite directions but is not actuated for such purpose when the metering sprocket is rotated a cycle in the other direction, characterized in that: said operating element includes a split shaft comprising a pair of substantially parallel leg members which may be transversely flexed towards one another to at least partially occupy a space normally separating said leg members, and said metering sprocket includes a pair of ramp-like teeth normally disposed in the space between said leg members which remain in the space to engage the leg members when the metering sprocket is rotated a cycle in the one direction and which move out of the space to flex the leg members towards one another to avoid engaging them when the metering sprocket is rotated a cycle in the other direction.
Claim 2
Dependent Claim
189 words
A photographic camera wherein a film metering sprocket undergoes respective cycles of rotation in each of two opposite directions when a filmstrip is advanced substantially a frame increment in corresponding directions over said metering sprocket, and an operating element is actuated to perform a camera function when said metering sprocket is rotated a cycle in one of the opposite directions but is not actuated for such purpose when the metering sprocket is rotated a cycle in the other direction, characterized in that: said operating element includes a split shaft comprising a pair of substantially parallel leg members which may be transversely flexed towards one another to at least partially occupy a space normally separating said leg members, and said metering sprocket includes a pair of ramp-like teeth normally disposed in the space between said leg members which remain in the space to engage the leg members when the metering sprocket is rotated a cycle in the one direction and which move out of the space to flex the leg members towards one another to avoid engaging them when the metering sprocket is rotated a cycle in the other direction.
Claim 3
Dependent Claim
30 words
A photographic camera as recited in claim 1, wherein said leg members are integrally formed with said operating member and said ramp-like teeth are integrally formed with said metering sprocket.
Claim 4
Dependent Claim
67 words
A photographic camera as recited in claim 1, wherein said metering sprocket has a central circular opening, said leg members of said operating element extend into said central opening and have respective peripheral surface portions shaped substantially in conformity with the peripheral edge of said central opening, and said ramp-like teeth of the metering sprocket protrude into said central opening at the space between said leg members.
Claim 5
Dependent Claim
38 words
A photographic camera as recited in claim 1, wherein said operating element includes respective means for performing shutter related and film metering related functions when the operating element is rotated in the one direction by said metering sprocket.
Claim 6
Dependent Claim
173 words
A photographic camera wherein a film metering sprocket undergoes respective cycles of rotation in each of two opposite directions when a filmstrip is advanced substantially a frame increment in corresponding directions over said metering sprocket, and an operating element is actuated to perform a camera function when said metering sprocket is rotated a cycle in one of the opposite directions but is not actuated for such purpose when the metering sprocket is rotated a cycle in the other direction, characterized in that: said operating element includes a longitudinally split shaft which may be transversely compressed to reduce its width, and said metering sprocket includes tooth-like means which when the metering sprocket is rotated a cycle in the one direction engages said split shaft to compel the metering sprocket to rotate said operating element in the same direction but which when the metering sprocket is rotated a cycle in the other direction transversely compresses the split shaft to avoid engaging the shaft to permit the metering sprocket to rotate independently of the operating element.
Claim 7
Dependent Claim
173 words
A photographic camera wherein a film metering sprocket undergoes respective cycles of rotation in each of two opposite directions when a filmstrip is advanced substantially a frame increment in corresponding directions over said metering sprocket, and an operating element is actuated to perform a camera function when said metering sprocket is rotated a cycle in one of the opposite directions but is not actuated for such purpose when the metering sprocket is rotated a cycle in the other direction, characterized in that: said operating element includes a longitudinally split shaft which may be transversely compressed to reduce its width, and said metering sprocket includes tooth-like means which when the metering sprocket is rotated a cycle in the one direction engages said split shaft to compel the metering sprocket to rotate said operating element in the same direction but which when the metering sprocket is rotated a cycle in the other direction transversely compresses the split shaft to avoid engaging the shaft to permit the metering sprocket to rotate independently of the operating element.
Claim 8
Dependent Claim
39 words
A photographic camera as recited in claim 5, wherein said metering sprocket has a central opening, and said split shaft of the operating element extends into said central opening to coaxially dispose said metering sprocket and said operating element.
Claim 9
Dependent Claim
44 words
A photographic camera as recited in claim 6, wherein said operating element is a single unitary piece including respective coaxial means for performing shutter related and film metering related functions when the operating element is rotated in the one direction by said metering means.
References Cited (Backward Citations)
US32558A
Cited
US842825A
Cited
US2906184A
Cited
JPS5610626A
Cited
US4324469A
Cited
US4332449A
Cited
US4441799A
Cited
US4416525A
Cited
USRE32558E
Cited
US4457605A
Cited
US4619509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |