Patent US3967291A successfully refreshed from Google Patents.
US3967291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter controlled film advancing apparatus
Assignee: Cima Kogaku Co Ltd
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Filing: 1974-11-12
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Granted: 1976-06-29
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Expires: 1994-11-12
Abstract
Abstract A photographic camera capable of either automatically or manually taking-up the film comprising a rotary drive means such as a spring motor or an electric motor for automatic take-up of the film and a manual actuating means such as a lever or a knob for manual take-up of the film, these rotary drive means and manual actuating means being connected to opposite ends of the film take-up shaft through a first and second directional clutches having operational directions opposite to each other. This photographic camera further comprises a first and a second shutter release members so as to enable the camera to perform the double exposure photographing even when the camera is in a condition wherein the automatic take-up of the film is available.
Inventors
- 👤 Motoi Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425; G03B19/00; G03B19/02; G03B19/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A photographic camera having a film take-up mechanism for either manually or automatically taking up the film, which comprises: a film take-up shaft; a first directional clutch means; a manual actuating means having a shaft which is connected to one end of the film take-up shaft through the first directional clutch means; a second directional clutch means having an operational direction opposite to that of the first directional clutch means; and a spring motor having a rotary drive shaft which is connected to the other end of the film take-up shaft through the second directional clutch means; each axis of said film take-up shaft, said shaft of the manual actuating means and said rotary drive shaft being aligned with each other.
Claim 2
Dependent Claim
121 words
A photographic camera having a film take-up mechanism for either manually or automatically taking up the film, which comprises: a film take-up shaft; a first directional clutch means; a manual actuating means having a shaft which is connected to one end of the film take-up shaft through the first directional clutch means; a second directional clutch means having an operational direction opposite to that of the first directional clutch means; and a spring motor having a rotary drive shaft which is connected to the other end of the film take-up shaft through the second directional clutch means; each axis of said film take-up shaft, said shaft of the manual actuating means and said rotary drive shaft being aligned with each other.
Claim 3
Dependent Claim
16 words
A photographic camera according to claim 1, said first and second directional clutch means are ratchet-wheels.
Claim 4
Dependent Claim
16 words
A photographic camera according to claim 1, said manual actuating means is a film take-up lever.
Claim 5
Dependent Claim
200 words
A photographic camera according to claim 1, further comprises: a shutter means; a lock means connected to said spring motor for locking the operation thereof; and a shutter release mechanism for releasing the shutter including a first shutter release member movable between the first and the second positions and connected to said shutter means so that the shutter means is relased by the movement, from the first position to the second position, of the first shutter release member, a second shutter release member movable between the first and the second positions and connected to said shutter means and to said lock means so that the shutter means is released by the movement, from the first position to the second position, of the second shutter release member and that the locking operation of said lock means is released by the movement, from the second position to the first position, of the second shutter release member, and a shutter release button selectively connected to one of the first and the second shutter release members; whereby the shutter can be released with no relation to the operation of the spring motor when the shutter release button is connected to the first release member.
Claim 6
Dependent Claim
35 words
A photographic camera according to claim 4, said shutter release button is selectively connected either one of the first and the second shutter release members by rotationally changing the position of the shutter release button.
References Cited (Backward Citations)
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US1386733A
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US1448526A
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US1444682A
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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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |