US3898679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically driven control device for a camera
Assignee: Canon Inc
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Filing: 1973-08-14
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Granted: 1975-08-05
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Expires: 1993-08-14
Abstract
Abstract A wind up electric motor which performs film wind up and shutter charging, etc. and a release electric motor which performs shutter release are connected to a power source through a change over switch, and an electromagnetic relay which is activated by a release button is made ON and OFF, to change over said change over switch in its connection, thereby the above mentioned windup electric motor and the release electric motor are driven alternately.
Inventors
- 👤 Mitsutoshi Ogiso
- 👤 Hiroshi Aizawa
- 👤 Susumu Kozuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:45
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
200 words
An electrically driven control device for a camera comprising; a power source, an electro-magnetic relay connected to both terminals of said power source, a first switching means connected to said electromagnetic relay and controlled to ON or OFF by operating a release button, a wind-up driving means connected between both terminals of the above mentioned power source to conduct film wind-up and shutter charging, a release driving means connected between both terminals of the above mentioned power source to conduct shutter release, a second switching means connected to the above mentioned windup driving means and placed in ON state by completion of said shutter release, a third switching means connected to the above mentioned release driving means and placed in ON state by completion of said wind-up, and a change over means being placed between the above mentioned power source and the wind-up driving means also the release driving means and changed over by the action of the above mentioned electro-magnetic relay and is connected to the above mentioned release driving means, wherein said change over means is changed over and connected to the wind-up driving means at the time when the above mentioned electro-magnetic relay is not in operation.
Claim 2
Dependent Claim
200 words
An electrically driven control device for a camera comprising; a power source, an electro-magnetic relay connected to both terminals of said power source, a first switching means connected to said electromagnetic relay and controlled to ON or OFF by operating a release button, a wind-up driving means connected between both terminals of the above mentioned power source to conduct film wind-up and shutter charging, a release driving means connected between both terminals of the above mentioned power source to conduct shutter release, a second switching means connected to the above mentioned windup driving means and placed in ON state by completion of said shutter release, a third switching means connected to the above mentioned release driving means and placed in ON state by completion of said wind-up, and a change over means being placed between the above mentioned power source and the wind-up driving means also the release driving means and changed over by the action of the above mentioned electro-magnetic relay and is connected to the above mentioned release driving means, wherein said change over means is changed over and connected to the wind-up driving means at the time when the above mentioned electro-magnetic relay is not in operation.
Claim 3
Dependent Claim
43 words
The electrically driven control device for a camera claimed in claim 1, which further comprises a fourth switching means between the above mentioned power source and the above mentioned wind-up driving means to conduct change over between one frame photographing and continuous photographing.
Claim 4
Dependent Claim
34 words
The electrically driven control device for a camera claimed in claim 2, in which the fourth switching means is controlled to ON or OFF in an association with the operation of the release button.
Claim 5
Dependent Claim
30 words
The electrically driven control device for a camera claimed in claim 2, which further comprises a means to couple an auxiliary control device in parallel with the first switching means.
Claim 6
Dependent Claim
34 words
The electrically driven control device for a camera claimed in claim 2, which comprises a starting control means connected to the above mentioned wind-up driving means to control the starting of said driving means.
Claim 7
Dependent Claim
35 words
The electrically driven control device for a camera claimed in claim 2, which further comprises a control means to effect control of the above mentioned release driving means in parallel with said release driving means.
Claim 8
Dependent Claim
40 words
The electrically driven control device for a camera claimed in claim 2, in which the above mentioned power source includes a power source voltage control means to change the number of photographing frames photographed per unit time during continuous photography.
Claim 9
Dependent Claim
45 words
The power source voltage control means for the electrically driven control device for a camera claimed in claim 7, which further comprises a variable resistance to determine the value of the power source voltage wherein said variable resistance is adjusted by operating the release button.
Claim 10
Dependent Claim
31 words
The electrically driven control device for a camera claimed in claim 1, in which the above mentioned power source has a timer circuit for changing the speed of the driving means.
Claim 11
Dependent Claim
41 words
The timer circuit in the electrically driven control device for a camera claimed in claim 9, which further comprises a time constant circuit consisting of a variable resistance and a condensor, said variable resistance being adjusted by operating the release button.
Claim 12
Dependent Claim
38 words
The electrically driven control device for a camera claimed in claim 1, which further comprises a fifth switching means which becomes OFF while the shutter is in operation and is connected to the above mentioned wind-up driving means.
Claim 13
Dependent Claim
29 words
The electrically driven control device for a camera claimed in claim 11, in which the fifth switching means has an input terminal of an exposure control means connected thereto.
Claim 14
Dependent Claim
75 words
The electrically driven control device for a camera claimed in claim 2 which further comprises an up and down member in which a rotating member being coupled to a driving axle of the above mentioned wind-up driving means is coupled with a rotating member at the film wind-up mechanism by a rotation absorbing mechanism, wherein a shutter release mechanism is activated by the difference in rotation of said rotating members by said rotation absorbing members.
References Cited (Backward Citations)
US3656420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |