Patent US4611896A successfully refreshed from Google Patents.
US4611896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically-driven camera
Assignee: Canon Inc
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Filing: 1984-02-22
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Granted: 1986-09-16
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Expires: 2004-02-22
Abstract
Abstract An electrically-driven camera performing film winding and rewinding with a motor is arranged to automatically perform a film rewinding operation after finishing an unfinished charging portion of a film winding and shutter charging process in carrying out the film rewinding operation when a roll of film comes to the end thereof halfway in the winding and charging process.
Inventors
- 👤 Tomonori Iwashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:55
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
230 words
An electro-driven camera comprising: (a) driving means for carrying out film winding through a film winding system mechanism, mechanical charging through a mechanical charging system mechanism and film rewinding through a film rewinding system mechanism; (b) a control member arranged to move by said mechanical charging system mechanism when said driving means causes the film to be wound, said member taking a first state when the charging is completed, and a second state when an exposure starts; (c) a first changeover switch operatively connected to said control member and responsive to setting of said control member in the first state for causing said driving means to operate in the film rewind mode, and to setting of said control member in the second state for causing said driving means to operate in the film wind mode; (d) a system for transmitting the driving power of said driving means either to said film winding system mechanism and said mechanical charging system mechanism, or to said film rewinding system mechanism; (e) a manually operable actuator member for setting said transmitting system in a state where the driving power of said driving means is not transmitted to said film winding system; and (f) a second switch arranged to change its position when said manually operable actuator member is operated, whereby said driving means is caused to operate by changing the position of said switch.
Claim 2
Dependent Claim
230 words
An electro-driven camera comprising: (a) driving means for carrying out film winding through a film winding system mechanism, mechanical charging through a mechanical charging system mechanism and film rewinding through a film rewinding system mechanism; (b) a control member arranged to move by said mechanical charging system mechanism when said driving means causes the film to be wound, said member taking a first state when the charging is completed, and a second state when an exposure starts; (c) a first changeover switch operatively connected to said control member and responsive to setting of said control member in the first state for causing said driving means to operate in the film rewind mode, and to setting of said control member in the second state for causing said driving means to operate in the film wind mode; (d) a system for transmitting the driving power of said driving means either to said film winding system mechanism and said mechanical charging system mechanism, or to said film rewinding system mechanism; (e) a manually operable actuator member for setting said transmitting system in a state where the driving power of said driving means is not transmitted to said film winding system; and (f) a second switch arranged to change its position when said manually operable actuator member is operated, whereby said driving means is caused to operate by changing the position of said switch.
Claim 3
Dependent Claim
109 words
An electro-driven camera according to claim 1, wherein said control member comprises: (a) a cam arranged to rotate when a gear to which the driving power of said driving means is transmitted rotates, said cam having a cutout in a portion of the periphery thereof and being arranged to assume a prescribed position when the charging is completed and to be taken out of said prescribed position when an exposure starts; and (b) a lever arranged to contact with said first changeover switch and said cam, said lever assuming a second state when out of engagement in said cutout and a first state when in engagement with said cutout.
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |