US4816852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
•
Filing: 1987-07-06
•
Granted: 1989-03-28
•
Expires: 2007-07-06
Abstract
Abstract A camera in which a film is continuously taken up to a take up reel from a film magazine being loaded then the film is rewound one frame by one frame into the film magazine for making a photographing, wherein a feeding of the film is made by a driving power of a motor and at the same time power supply to the motor is controlled depending on a presence of a loaded film, a state of closing of a back lid, variation in a torque in a take up reel at a time of continuous taking up of the film, and an indication state of a film counter, etc., so that a handling and operation of a continuous take up, a continuous rewinding and one frame rewinding in a camera are made simple and reliable.
Inventors
- 👤 Hiroyuki Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:45
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B1/00; G03B1/56; G03B1/58; G03B17/18; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
129 words
A camera in which a film loaded therein is first continuously taken up and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) detection means a for detecting loading of the film, and for preventing said electric driving means from performing the continuous take-up operation when the loading of film is not detected thereby; (c) a film charging lid arranged to be opened and closed; (d) operating means for opening and closing said film charging lid; (e) counter means for indicating a number of frames of the film; and (f) prohibiting means for prohibiting the opening of said film charging lid by said operating means when said counter is in a predetermined state.
Claim 2
Dependent Claim
129 words
A camera in which a film loaded therein is first continuously taken up and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) detection means a for detecting loading of the film, and for preventing said electric driving means from performing the continuous take-up operation when the loading of film is not detected thereby; (c) a film charging lid arranged to be opened and closed; (d) operating means for opening and closing said film charging lid; (e) counter means for indicating a number of frames of the film; and (f) prohibiting means for prohibiting the opening of said film charging lid by said operating means when said counter is in a predetermined state.
Claim 3
Dependent Claim
24 words
A camera according to claim 1, further comprising release means for releasing the prohibiting action of said prohibiting means from outside of the camera.
Claim 4
Dependent Claim
31 words
A camera according to claim 1, wherein said detection means includes control means for effecting a photographic preparation operation by a shutter release when the loading of film is not detected.
Claim 5
Dependent Claim
115 words
A camera in which a film loaded therein is first continuously taken up and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) detection means for detecting loading of the film, and for preventing said electric driving means from performing the continuous take-up operation when the loading of film is not detected thereby; (c) a film charging lid arranged to be opened; (d) operating means for opening said film charging lid; and (e) prohibiting means for prohibiting the opening of said film charging lid by said operating means when the film has been wound more than a predetermined amount.
Claim 6
Dependent Claim
115 words
A camera in which a film loaded therein is first continuously taken up and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) detection means for detecting loading of the film, and for preventing said electric driving means from performing the continuous take-up operation when the loading of film is not detected thereby; (c) a film charging lid arranged to be opened; (d) operating means for opening said film charging lid; and (e) prohibiting means for prohibiting the opening of said film charging lid by said operating means when the film has been wound more than a predetermined amount.
Claim 7
Dependent Claim
31 words
A camera according to claim 4, wherein said detection means includes control means for effecting a photographic preparation operation by a shutter release when the loading of film is not detected.
Claim 8
Dependent Claim
24 words
A camera according to claim 4, further comprising release means for releasing the prohibiting action of said prohibition means from outside of the camera.
Claim 9
Dependent Claim
102 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform the continuous rewinding operation of the film when the frame by frame rewinding has been done until no frame is left for further photography; and (c) warning means for warning in case that the number of frames of the film left for a further photography has reached a prescribed number other than zero.
Claim 10
Dependent Claim
102 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform the continuous rewinding operation of the film when the frame by frame rewinding has been done until no frame is left for further photography; and (c) warning means for warning in case that the number of frames of the film left for a further photography has reached a prescribed number other than zero.
Claim 11
Dependent Claim
18 words
A camera according to claim 7, wherein said warning means includes indication means for producing a flickering indication.
Claim 12
Dependent Claim
95 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding is done until no frame is left for a further photograph; and (c) stopping means for stopping said electric driving means before ar forward end of the film is drawn into a cartridge.
Claim 13
Dependent Claim
95 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding is done until no frame is left for a further photograph; and (c) stopping means for stopping said electric driving means before ar forward end of the film is drawn into a cartridge.
Claim 14
Dependent Claim
92 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame rewinding has been done until no frame is left for a further photography; and (c) operating means for having said electric driving means perform the continuous rewinding operation from outside of the camera.
Claim 15
Dependent Claim
92 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame rewinding has been done until no frame is left for a further photography; and (c) operating means for having said electric driving means perform the continuous rewinding operation from outside of the camera.
Claim 16
Dependent Claim
95 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding has been done until no frame is left for a further photograph; and (c) indication means for indicating a continuous take-up operation by said electric driving means while the operation is being performed.
Claim 17
Dependent Claim
95 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding has been done until no frame is left for a further photograph; and (c) indication means for indicating a continuous take-up operation by said electric driving means while the operation is being performed.
Claim 18
Dependent Claim
135 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding has bene done until no frame is left for a further photography; (c) a spool and sprocket to which the driving force is transmitted when said electric driving means performs the continuous take-up operation; and (d) clutch means for prohibiting the transmission of the driving force to said sprocket from said electric driving means when the speed of the film wound around said spool is faster than the peripheral speed of said sprocket.
Claim 19
Dependent Claim
135 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding has bene done until no frame is left for a further photography; (c) a spool and sprocket to which the driving force is transmitted when said electric driving means performs the continuous take-up operation; and (d) clutch means for prohibiting the transmission of the driving force to said sprocket from said electric driving means when the speed of the film wound around said spool is faster than the peripheral speed of said sprocket.
Claim 20
Dependent Claim
96 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding has been done until no frame is left for a further photography; (c) a spool for winding the film therearound; and (d) a friction member provided around said spool for tightening the film winding.
Claim 21
Dependent Claim
96 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding has been done until no frame is left for a further photography; (c) a spool for winding the film therearound; and (d) a friction member provided around said spool for tightening the film winding.
Claim 22
Dependent Claim
95 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding is done until no frame is left for a further photography; and (c) operating means for enabling the operation of the drive control of said electric driving means from outside of the camera.
Claim 23
Dependent Claim
95 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding is done until no frame is left for a further photography; and (c) operating means for enabling the operation of the drive control of said electric driving means from outside of the camera.
Claim 24
Dependent Claim
18 words
A camera according to claim 14, wherein said operating means includes holding means for maintaining the operation condition.
Claim 25
Dependent Claim
28 words
A camera according to claim 15, wherein said operating means includes changeover means for switching over said electric driving means from a winding mode to a rewinding mode.
Claim 26
Dependent Claim
22 words
A camera according to claim 15, wherein said operating means is associated with said detection means for detecting loading of the film.
Claim 27
Dependent Claim
91 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding is done until no frame is left for a further photography; (c) a spool for wining the film; and (d) guide means for guiding the film to said spool.
Claim 28
Dependent Claim
91 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) control means for causing said electric driving means to perform a continuous rewinding operation of the film when the frame by frame rewinding is done until no frame is left for a further photography; (c) a spool for wining the film; and (d) guide means for guiding the film to said spool.
Claim 29
Dependent Claim
104 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising (a) electric driving means for taking up and rewinding said film; (b) changeover means for detecting completion of the continuous take-up operation of the film and changing over the operation of the electric driving means from the continuous take-up operation to the frame by frame rewinding operation; and (c) warning means for warning in case that the usable number of frames of usable film left for a further photography has reached a prescribed number other than zero.
Claim 30
Dependent Claim
104 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame by frame, comprising (a) electric driving means for taking up and rewinding said film; (b) changeover means for detecting completion of the continuous take-up operation of the film and changing over the operation of the electric driving means from the continuous take-up operation to the frame by frame rewinding operation; and (c) warning means for warning in case that the usable number of frames of usable film left for a further photography has reached a prescribed number other than zero.
Claim 31
Dependent Claim
18 words
A camera according to claim 19, wherein said warning means includes indication means for producing a flickering indication.
Claim 32
Dependent Claim
99 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame-by-frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) response means for responding to the take-up of the film; (c) indication means for indicating the number of the film frames to be driven in response to the response means; and (d) control means for continuously driving said electric driving means to the rewinding side until said response means gets into a predetermined state in response to completion of the continuous take-up.
Claim 33
Dependent Claim
99 words
A camera in which a film loaded therein is first continuously taken up, and then photographs are taken as the film is rewound frame-by-frame, comprising: (a) electric driving means for taking up and rewinding said film; (b) response means for responding to the take-up of the film; (c) indication means for indicating the number of the film frames to be driven in response to the response means; and (d) control means for continuously driving said electric driving means to the rewinding side until said response means gets into a predetermined state in response to completion of the continuous take-up.
Claim 34
Dependent Claim
14 words
A camera according to claim 21, wherein said response means includes a rotary body.
Claim 35
Dependent Claim
24 words
A camera according to claim 22, wherein said rotary body is arranged so as to rotate in association with the movement of the film.
Claim 36
Dependent Claim
21 words
A camera according to claim 22, wherein said rotary body is arranged so as to be associated with the indication means.
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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |