US4999655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor driven camera
Assignee: Canon Inc
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Filing: 1989-08-31
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Granted: 1991-03-12
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Expires: 2009-08-31
Abstract
Abstract A motor driven camera which includes a first motor, a film rewind drive mechanism for driving film in a rewinding direction by the first motor serving as a drive source, a second motor, a film windup drive mechanism for driving the film in the winding up direction by the second motor serving as a drive source, the film windup drive mechanism includes a planetary clutch arranged upon rotation of the second motor in one direction to bring a windup transmission system into connection with the second motor, and upon rotation of the second motor in another direction to take the windup transmission system out of connection, and a motor control circuit, receptive of a signal representing start of a film rewinding, for driving the first motor in the rewinding direction and the second motor in the other direction.
Inventors
- 👤 Hidehiko Fukahori
- 👤 Masayuki Suzuki
- 👤 Yoshihiko Aihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:13
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
A motor driven camera comprising: (a) a first motor; (b) a film rewind drive mechanism for driving film in a rewinding direction by said first motor serving as a drive source; (c) a second motor; (d) a film windup drive mechanism for driving the film in the winding up direction by said second motor serving as a drive source, said film windup drive mechanism including a planetary clutch arranged upon rotation of said second motor in one direction to bring a windup transmission system into connection with said second motor, and upon rotation of said second motor in another direction to take said windup transmission system out of connection; and (e) a motor control circuit, receptive of a signal representing start of a film rewinding, for driving said first motor in the rewinding direction and said second motor in said other direction.
Claim 2
Dependent Claim
142 words
A motor driven camera comprising: (a) a first motor; (b) a film rewind drive mechanism for driving film in a rewinding direction by said first motor serving as a drive source; (c) a second motor; (d) a film windup drive mechanism for driving the film in the winding up direction by said second motor serving as a drive source, said film windup drive mechanism including a planetary clutch arranged upon rotation of said second motor in one direction to bring a windup transmission system into connection with said second motor, and upon rotation of said second motor in another direction to take said windup transmission system out of connection; and (e) a motor control circuit, receptive of a signal representing start of a film rewinding, for driving said first motor in the rewinding direction and said second motor in said other direction.
Claim 3
Dependent Claim
52 words
A camera according to claim 1, wherein said film windup drive mechanism includes a spool for taking up the film, said spool being arranged to be freed when the connection between said second motor and said spool is substantially cut off by the rotation of said second motor in said other direction.
Claim 4
Dependent Claim
36 words
A camera according to claim 2, wherein said motor control circuit, when receiving said signal, first drives said second motor in said other direction, and, after slight delay, drives said first motor in said rewinding direction.
Claim 5
Dependent Claim
121 words
A motor driven camera comprising: (a) a first motor; (b) a film rewind drive mechanism for driving a rewind transmission system by said first motor serving as a drive source to move film in a rewinding direction; (c) a second motor; (d) a film windup drive mechanism for driving a windup transmission system by said second motor serving as a drive source to move the film in the winding-up direction; (e) a motor control circuit, receptive of a signal representing start of a film rewinding, for driving said first motor in the rewinding direction; and (f) means, receptive of said signal representing start of the film rewinding, for cutting off the connection between said rewind transmission system and said second motor.
Claim 6
Dependent Claim
121 words
A motor driven camera comprising: (a) a first motor; (b) a film rewind drive mechanism for driving a rewind transmission system by said first motor serving as a drive source to move film in a rewinding direction; (c) a second motor; (d) a film windup drive mechanism for driving a windup transmission system by said second motor serving as a drive source to move the film in the winding-up direction; (e) a motor control circuit, receptive of a signal representing start of a film rewinding, for driving said first motor in the rewinding direction; and (f) means, receptive of said signal representing start of the film rewinding, for cutting off the connection between said rewind transmission system and said second motor.
References Cited (Backward Citations)
US4611896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-11 | 1994-09-10 | 1995-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-11 | 1998-09-10 | 1999-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-11 | 2002-09-10 | 2003-03-12 | $7700.00 | Window Closed / Lapsed |