US4466719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind-up device for camera
Assignee: Canon Inc
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Filing: 1983-05-16
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Granted: 1984-08-21
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Expires: 2003-05-16
Abstract
Abstract A camera which is provided with a motor for driving a wind-up mechanism to perform film feeding and shutter charging and which is arranged to have photographing actions carried out one after another upon completion of the film feeding and shutter charging, a wind-up device has a switch which is arranged to force the wind-up mechanism into completing the winding up action thereof by means of the motor in response to depression of a rewinding button.
Inventors
- 👤 Shosuke Haraguchi
- 👤 Masanori Uchidoi
- 👤 Yoshihiro Shigeta
- 👤 Ryoichi Yoshikawa
- 👤 Yoichi Tosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
131 words
A wind-up device for a camera, comprising: driving means for effecting film winding and shutter charging; control means for controlling the driving action of said driving means, said control means being arranged to bring said driving means into a driving state when a first signal is applied thereto and to render the driving means incapable of driving when a second signal is applied; first signal generating means for producing said first signal upon completion of an exposure effecting operation; second signal generating means for producing said second signal upon completion of a winding operation; switch means for causing said first signal generating means to produce the first signal therefrom irrespective of completion of the exposure effecting operation; and operation means for causing said switching means to perform the switching action thereof.
Claim 2
Dependent Claim
131 words
A wind-up device for a camera, comprising: driving means for effecting film winding and shutter charging; control means for controlling the driving action of said driving means, said control means being arranged to bring said driving means into a driving state when a first signal is applied thereto and to render the driving means incapable of driving when a second signal is applied; first signal generating means for producing said first signal upon completion of an exposure effecting operation; second signal generating means for producing said second signal upon completion of a winding operation; switch means for causing said first signal generating means to produce the first signal therefrom irrespective of completion of the exposure effecting operation; and operation means for causing said switching means to perform the switching action thereof.
Claim 3
Dependent Claim
14 words
A device according to claim 1, wherein said operation means is a rewinding button.
Claim 4
Dependent Claim
60 words
A device according to claim 2, further including: a sprocket for film winding, said sprocket being provided with a clutch operated by a driving force of said driving means either to permit or to inhibit said film winding, said clutch being interlocked with said rewinding button to inhibit said film winding in response to an operation on the rewinding button.
Claim 5
Dependent Claim
13 words
A device according to claim 1, wherein said driving means is a motor.
Claim 6
Dependent Claim
191 words
A wind-up device for a camera, comprising: a wind-up mechanism arranged to perform film winding and shutter charging; driving means for driving said wind-up mechanism; a sprocket operated by said wind-up mechanism for performing film winding, said sprocket being provided with a clutch for transmission of or releasing the transmission of the operation of said wind-up mechanism; a rewinding operation member which releases the transmission by said clutch when operated; control means for controlling the driving action of said driving means, said control means being arranged to bring the driving means into a driving state when a first signal is applied thereto and to render the driving means incapable of driving when a second signal is applied; first signal generating means for producing said first signal upon completion of an exposure effecting operation; second signal generating means for producing said second signal upon completion of a winding operation; and switch means for causing said first signal generating means to produce the first signal therefrom irrespective of completion of the exposure effecting operation, said switch means being arranged to be caused to perform the switching action thereof by said rewinding operation member.
Claim 7
Dependent Claim
191 words
A wind-up device for a camera, comprising: a wind-up mechanism arranged to perform film winding and shutter charging; driving means for driving said wind-up mechanism; a sprocket operated by said wind-up mechanism for performing film winding, said sprocket being provided with a clutch for transmission of or releasing the transmission of the operation of said wind-up mechanism; a rewinding operation member which releases the transmission by said clutch when operated; control means for controlling the driving action of said driving means, said control means being arranged to bring the driving means into a driving state when a first signal is applied thereto and to render the driving means incapable of driving when a second signal is applied; first signal generating means for producing said first signal upon completion of an exposure effecting operation; second signal generating means for producing said second signal upon completion of a winding operation; and switch means for causing said first signal generating means to produce the first signal therefrom irrespective of completion of the exposure effecting operation, said switch means being arranged to be caused to perform the switching action thereof by said rewinding operation member.
Claim 8
Dependent Claim
24 words
A device according to claim 5, wherein said first signal generating means is provided with a switch for detecting completion of a shutter operation.
Claim 9
Dependent Claim
31 words
A device according to claim 6, wherein said first signal generating means is provided with gate means which has said switch and said switch means connected to the input terminals thereof.
Claim 10
Dependent Claim
24 words
A device according to claim 5, wherein said first signal generating means and said second signal generating means are provided with a common Flip-Flop.
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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |