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US4611896A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrically-driven camera

Assignee: Canon Inc
•
Filing: 1984-02-22
•
Granted: 1986-09-16
•
Expires: 2004-02-22
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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 10:43
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.

References Cited (Backward Citations)

US4222651A Cited
US4297019A Cited
US4324469A Cited
US4466719A Cited
US4392730A Cited
US4400074A Cited
US4457605A Cited

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

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