US4881092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor driven camera
Assignee: Canon Inc
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Filing: 1987-12-29
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Granted: 1989-11-14
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Expires: 2007-12-29
Abstract
Abstract A motor driven camera includes a mirror drive mechanism of swinging a movable mirror between a finder viewing position and an exposure retracted position, a shutter charge mechanism for performing charge driving and charge releasing of a shutter, a first film drive mechanism for driving film in a direction reverse to the feeding direction for each shot, a first motor serving as a drive source for driving the mirror drive mechanism, the shutter charge mechanism and the first film drive mechanism, and a clutch mechanism having output transmission systems being changed over in response to a change of the direction of rotation of an output of the first motor, one of the output transmission systems being connected to the mirror drive mechanism and the shutter charge mechanism, and another of the output transmission systems being connected to the first film drive mechanism.
Inventors
- 👤 Hidehiko Fukahori
- 👤 Masayuki Suzuki
- 👤 Yoshihiko Aihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A motor driven camera comprising: a mirror drive mechanism for swinging a mirror to an exposure retracted position from a finger viewing position and to the finder viewing position from the exposure retracted position; a shutter charge mechanism for performing charge driving and charge releasing of a shutter; a first film drive mechanism for driving film in a direction reverse to a feeding direction for each successive shot; a first motor serving as a drive source for driving said mirror drive mechanism, said shutter charge mechanism and said first film drive mechanism, wherein said mirror drive mechanism, for said mirror drive mechanism effects mirror movement from the finder viewing position to the exposure retracted positions and back to the finder viewing positions with unidirectional rotation of said first motor; and a clutch mechanism having output transmission systems being changed over in response to a change of the direction of rotation of an output of said first motor, one of said output transmission systems being connected to said mirror drive mechanism and said shutter charge mechanism, and another of said output transmission systems being connected to said first film drive mechanism.
Claim 2
Dependent Claim
190 words
A motor driven camera comprising: a mirror drive mechanism for swinging a mirror to an exposure retracted position from a finger viewing position and to the finder viewing position from the exposure retracted position; a shutter charge mechanism for performing charge driving and charge releasing of a shutter; a first film drive mechanism for driving film in a direction reverse to a feeding direction for each successive shot; a first motor serving as a drive source for driving said mirror drive mechanism, said shutter charge mechanism and said first film drive mechanism, wherein said mirror drive mechanism, for said mirror drive mechanism effects mirror movement from the finder viewing position to the exposure retracted positions and back to the finder viewing positions with unidirectional rotation of said first motor; and a clutch mechanism having output transmission systems being changed over in response to a change of the direction of rotation of an output of said first motor, one of said output transmission systems being connected to said mirror drive mechanism and said shutter charge mechanism, and another of said output transmission systems being connected to said first film drive mechanism.
Claim 3
Dependent Claim
41 words
A camera according to claim 1, further comprising: a second film drive mechanism for driving the film in a feeding direction for each one-frame shot; and a second motor serving as a drive source for driving said second film drive mechanism.
Claim 4
Dependent Claim
19 words
A camera according to claim 1, wherein said first film drive mechanism drives the film in the rewinding direction.
Claim 5
Dependent Claim
31 words
A camera according to claim 2, wherein said first film drive mechanism drives the film in the rewinding direction, and said second drive mechanism drives the film in the winding-up direction.
Claim 6
Dependent Claim
64 words
A camera according to claim 1, wherein said clutch mechanism is includes a planetary clutch having a planet gear, when revolved in a first direction said planet gear engaging a common start transmission gear of said mirror drive mechanism and said shutter charge mechanism, and when revolved in a second direction said planet gear engaging a transmission gear of said first film drive mechanism.
Claim 7
Dependent Claim
49 words
A camera according to claim 5, wherein said mirror drive mechanism and said shutter charge mechanism are associated with each other so that rotation of said start transmission gear accompanies with driving one of said mechanisms, and driving of said one mechanism accompanies with driving another of said mechanisms.
Claim 8
Dependent Claim
75 words
A camera according to claim 4, wherein said first film drive mechanism includes a rewind fork engaging with a hub of a film cartridge, said second film drive mechanism includes a spool on which the film is taken up, said first motor is arranged on said rewind fork side of said movable mirror on a camera framework, and said second motor is arranged on said spool side of said movable mirror on said camera framework.
Claim 9
Dependent Claim
188 words
A motor driven camera comprising: a mirror drive mechanism rotating unidirectionally for swinging a mirror to an exposure retracted position from the exposure retracted position; a shutter charge mechanism for performing driving related to charging of a shutter; a first film drive mechanism for driving film in a direction reverse to a feeding direction for each successive shot; a first motor serving as a drive source for driving said mirror drive mechanism, said shutter charge mechanism and said first film drive mechanism wherein said mirror drive mechanism, for said mirror drive mechanism effects mirror movement from the finder viewing position to the exposure retracted position and back to the finder viewing positions with unidirectional rotation of said first motor; and a clutch mechanism having output transmission systems being changed over in response to a change of the direction of rotation of an output of said first motor, said mirror drive mechanism and said shutter charge mechanism being connected to one of said output transmission systems of said clutch mechanism, and said first film drive mechanism being connected to another of said output transmission systems of said clutch mechanism.
Claim 10
Dependent Claim
188 words
A motor driven camera comprising: a mirror drive mechanism rotating unidirectionally for swinging a mirror to an exposure retracted position from the exposure retracted position; a shutter charge mechanism for performing driving related to charging of a shutter; a first film drive mechanism for driving film in a direction reverse to a feeding direction for each successive shot; a first motor serving as a drive source for driving said mirror drive mechanism, said shutter charge mechanism and said first film drive mechanism wherein said mirror drive mechanism, for said mirror drive mechanism effects mirror movement from the finder viewing position to the exposure retracted position and back to the finder viewing positions with unidirectional rotation of said first motor; and a clutch mechanism having output transmission systems being changed over in response to a change of the direction of rotation of an output of said first motor, said mirror drive mechanism and said shutter charge mechanism being connected to one of said output transmission systems of said clutch mechanism, and said first film drive mechanism being connected to another of said output transmission systems of said clutch mechanism.
Claim 11
Dependent Claim
41 words
A camera according to claim 8, further comprising: a second film drive mechanism for driving the film in a feeding direction for each one-frame shot; and a second motor serving as a drive source for driving said second film drive mechanism.
References Cited (Backward Citations)
US4538893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |