Patent US4779111A successfully refreshed from Google Patents.
US4779111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
•
Filing: 1988-01-04
•
Granted: 1988-10-18
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Expires: 2008-01-04
Abstract
Abstract A camera is arranged such that when a film housed in a film cartridge is loaded into a film cartridge chamber of the camera with a leader portion of the film remaining outside the camera and upon closure of the film cartridge chamber, the leader portion of the film is automatically retracted into the camera and the film is wound onto a winding spool. This camera is characterized by providing a detector for detecting occurrence of an abnormal state of movement of the film during operation of retraction of the leader portion of the film into the camera, or during operation of winding the film onto the winding spool, and a warning system responsive to the abnormal-state detector to stop the movement of the film or to produce a warning of the occurrence of the abnormal state.
Inventors
- 👤 Yukio Ogawa
- 👤 Toyotoshi Suzuki
- 👤 Kiyoshi Alyfuku
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:13
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56; G03B1/58; G03B17/00; G03B17/18; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
145 words
A camera of the type in which when a film housed in a film cartridge is loaded into a film cartridge chamber of the camera and a closure of said film cartridge chamber is closed in such a state that a leader portion of the film remains outside the camera, said leader portion of the film is retracted into the camera and then the film is wound onto a film winding spool, comprising: (A) film moving means for moving the film; (B) abnormal-state detecting means for detecting an abnormal-state of movement of the film which may occur during operation of retracting the leader portion of the film into the camera; and (C) means responsive to occurrence of the abnormal state detected by said abnormal-state detecting means to stop said film moving means or to produce a warning of the occurrence of the above-mentioned abnormal state.
Claim 2
Dependent Claim
145 words
A camera of the type in which when a film housed in a film cartridge is loaded into a film cartridge chamber of the camera and a closure of said film cartridge chamber is closed in such a state that a leader portion of the film remains outside the camera, said leader portion of the film is retracted into the camera and then the film is wound onto a film winding spool, comprising: (A) film moving means for moving the film; (B) abnormal-state detecting means for detecting an abnormal-state of movement of the film which may occur during operation of retracting the leader portion of the film into the camera; and (C) means responsive to occurrence of the abnormal state detected by said abnormal-state detecting means to stop said film moving means or to produce a warning of the occurrence of the above-mentioned abnormal state.
Claim 3
Dependent Claim
29 words
A camera according to claim 1, in which said abnormal-state detecting means includes means arranged to detect said abnormal state on the basis of moving speed of the film.
Claim 4
Dependent Claim
42 words
A camera according to claim 1, further comprising: a sprocket arranged to engage with perforations formed in said film to detect a state of movement of said perforations, said sprocket being movable into or out of a moving path of the film.
Claim 5
Dependent Claim
30 words
A camera according to claim 3, further comprising: energizing means arranged to energize said sprocket in such direction that said sprocket is moved into the moving path of the film.
Claim 6
Dependent Claim
143 words
A camera of the type in which when a film housed in a film cartridge is loaded into a film cartridge chamber of the camera and a closure of said film cartridge chamber is closed in such a state that a leader portion of the film remains outside the camera, said leader portion of the film is retracted into the camera and then the film is wound onto a film winding spool, comprising: (A) film moving means for moving the film; (B) abnormal-state detecting means for detecting an abnormal-state of movement of the film which may occur during operation of winding the film onto the film winding spool; and (C) means responsive to occurrence of the abnormal state detected by said abnormal-state detecting means to stop said film moving means or to produce a warning of the occurrence of the above-mentioned abnormal state.
Claim 7
Dependent Claim
143 words
A camera of the type in which when a film housed in a film cartridge is loaded into a film cartridge chamber of the camera and a closure of said film cartridge chamber is closed in such a state that a leader portion of the film remains outside the camera, said leader portion of the film is retracted into the camera and then the film is wound onto a film winding spool, comprising: (A) film moving means for moving the film; (B) abnormal-state detecting means for detecting an abnormal-state of movement of the film which may occur during operation of winding the film onto the film winding spool; and (C) means responsive to occurrence of the abnormal state detected by said abnormal-state detecting means to stop said film moving means or to produce a warning of the occurrence of the above-mentioned abnormal state.
Claim 8
Dependent Claim
29 words
A camera according to claim 5, in which said abnormal-state detecting means includes means arranged to detect said abnormal state on the basis of moving speed of the film.
Claim 9
Dependent Claim
41 words
A camera according to claim 5, further comprising: a sprocket arranged to engage with perforations formed in said film to detect amount of movement of said perforations, said sprocket being movable into or out of a moving path of the film.
Claim 10
Dependent Claim
30 words
A camera according to claim 7, further comprising: energizing means arranged to energize said sprocket in such direction that said sprocket is moved into the moving path of the film.
Claim 11
Dependent Claim
105 words
A camera according to claim 1, wherein said abnormal-state detecting means comprises: a state of movement detection means for detecting a state of movement of the film, said state of movement detection means, comprising, (a) an electrically conductive contact plate disposed in a back of the camera, and (b) first and second conductive members disposed in the back of the camera rearwardly of the path of movement of the film, whereby said first and second conductive members become electrically connected upon contact with said contact plate and electrically disconnected by interposition of the film between the contact plate and the first and second conductive members.
Claim 12
Dependent Claim
18 words
A camera according to claim 1, further comprising a holding means for holding rollers for moving the film.
Claim 13
Dependent Claim
37 words
A camera according to claim 1, further comprising a camera body member and a film pressing member arranged at an aperture portion of said camera body member, said pressing member being fixed to said camera body member.
Claim 14
Dependent Claim
21 words
A camera according to claim 11, further comprising a position adjusting means for adjusting the position of said film pressing member.
Claim 15
Dependent Claim
96 words
A camera according to claim 5, wherein said abnormal-state detecting means comprises: a state of movement detection means for detecting a state of movement of the film, said state of movement detection means comprising, (a) an electrically conductive contact plate disposed in a back of the camera, and (b) first and second conductive members disposed in the back of the camera rearwardly of the path of movement of the film, whereby said first and second conductive members become electrically disconnected by interposition of the film between the contact plate and the first and second conductive members.
Claim 16
Dependent Claim
18 words
A camera according to claim 5, further comprising a holding means for holding rollers for moving the film.
Claim 17
Dependent Claim
37 words
A camera according to claim 5, further comprising a camera body member and a film pressing member arranged at an aperture portion of said camera body member, said pressing member being fixed to said camera body member.
Claim 18
Dependent Claim
21 words
A camera according to claim 5, further comprising a position adjusting means for adjusting the position of said film processing member.
Claim 19
Dependent Claim
134 words
A camera wherein a film cartridge substantially containing a film is loaded into the camera such that a portion of a film extending outside of the film cartridge initially remains outside of the camera, and the film remaining outside of the film cartridge is then retracted into the camera and fed to a film take-up spool, comprising: a film moving means for feeding the film; an irregularity detecting means for detecting an irregularity in film feeding during either the retracting operation of the film into the camera or during the feeding operation of the film onto the film take-up spool; and a response means for effecting at least one of stopping the film feeding operation or indicating the existence of an irregularity in response to the detection of an irregularity by said detecting means.
Claim 20
Dependent Claim
134 words
A camera wherein a film cartridge substantially containing a film is loaded into the camera such that a portion of a film extending outside of the film cartridge initially remains outside of the camera, and the film remaining outside of the film cartridge is then retracted into the camera and fed to a film take-up spool, comprising: a film moving means for feeding the film; an irregularity detecting means for detecting an irregularity in film feeding during either the retracting operation of the film into the camera or during the feeding operation of the film onto the film take-up spool; and a response means for effecting at least one of stopping the film feeding operation or indicating the existence of an irregularity in response to the detection of an irregularity by said detecting means.
Claim 21
Dependent Claim
19 words
A camera according to claim 17, wherein said irregularity detecting means comprises means for detecting the film moving speed.
Claim 22
Dependent Claim
43 words
A camera according to claim 17, further comprising a sprocket arranged to engage with perforations formed in the film to detect a state of movement of the perforations, said sprocket being movable into or out of a path of movement of the film.
Claim 23
Dependent Claim
32 words
A camera according to claim 19, further comprising a moving means for moving said sprocket in such a direction that said sprocket is moved into the path of movement of the film.
Claim 24
Dependent Claim
45 words
A camera according to claim 17, wherein said irregularity detecting means comprises a state of movement detecting means for detecting a state of movement of the film, said means being capable of being brought into and out of the path of movement of the film.
Claim 25
Dependent Claim
105 words
A camera according to claim 17, wherein said irregularity detecting means comprises: a state of movement detection means for detecting the state of movement of the film, said state of movement detection means comprising, (a) an electrically conductive contact plate disposed in a back of the camera, and (b) first and second conductive members disposed in the back of the camera rearwardly of the path of movement of the film, whereby said first and second conductive members become electrically connected upon contact with said contact plate and electrically disconnected by interposition of the film between the contact plate and the first and second conductive members.
Claim 26
Dependent Claim
18 words
A camera according to claim 17, further comprising a holding means for holding rollers for moving the film.
Claim 27
Dependent Claim
37 words
A camera according to claim 17, further comprising a camera body member and a film pressing member arranged at an aperture portion of said camera body member, said pressing member being fixed to said camera body member.
Claim 28
Dependent Claim
21 words
A camera according to claim 24, further comprising a position adjusting means for adjusting the position of said film pressing member.
Claim 29
Dependent Claim
139 words
A camera wherein a film cartridge substantially containing a film is loaded into the camera such that a portion of a film extending outside of the film cartridge initially remains outside of the camera, and the film remaining outside of the film cartridge is then retracted into the camera and fed to a film take-up spool comprising: a film moving means for feeding the film; an irregularity detecting means for detecting an irregularity in feeding film when such irregularity takes place during a rewinding of the film back into the cartridge or during a film feeding operation to the side of the film take-up spool; and a response means for effecting at least one of stopping the film feeding operation or indicating the existence of an irregularity in response to the detection of an irregularity by said detecting means.
Claim 30
Dependent Claim
139 words
A camera wherein a film cartridge substantially containing a film is loaded into the camera such that a portion of a film extending outside of the film cartridge initially remains outside of the camera, and the film remaining outside of the film cartridge is then retracted into the camera and fed to a film take-up spool comprising: a film moving means for feeding the film; an irregularity detecting means for detecting an irregularity in feeding film when such irregularity takes place during a rewinding of the film back into the cartridge or during a film feeding operation to the side of the film take-up spool; and a response means for effecting at least one of stopping the film feeding operation or indicating the existence of an irregularity in response to the detection of an irregularity by said detecting means.
Claim 31
Dependent Claim
20 words
A camera according to claim 26, wherein said irregularity detecting means comprises a means for detecting the film moving speed.
Claim 32
Dependent Claim
43 words
A camera according to claim 26, further comprising a sprocket arranged to engage with perforations formed in the film to detect a state of movement of the perforations, said sprocket being movable into or out of a path of movement of the film.
Claim 33
Dependent Claim
32 words
A camera according to claim 28, further comprising a moving means for moving said sprocket in such a direction that said sprocket is moved into the path of movement of the film.
Claim 34
Dependent Claim
49 words
A camera according to claim 26, wherein said irregularity detecting means comprises a state of movement detecting means for detecting a state of movement of the film, said state of movement detecting means being capable of being brought into and out of the path of movement of the film.
Claim 35
Dependent Claim
105 words
A camera according to claim 26, wherein said irregularity detecting means comprises: a state of movement detection means for detecting a state of movement of the film, said state of movement detection means comprising, (a) an electrically conductive contact plate disposed in a back of the camera, and (b) first and second conductive members disposed in the back of the camera rearwardly of the path of movement of the film, whereby said first and second conductive members become electrically connected upon contact with said contact plate and electrically disconnected by interposition of the film between the contact plate and the first and second conductive members.
Claim 36
Dependent Claim
35 words
A camera according to claim 26, further comprising a conductive member for detecting the state of movement of the film, said conductive member being provided with holding means for holding rollers for moving the film.
Claim 37
Dependent Claim
37 words
A camera according to claim 26, further comprising: a camera body member; and a film pressing member arranged at an aperture portion of said camera body member, said pressing member being fixed on said camera body member.
Claim 38
Dependent Claim
21 words
A camera according to claim 33, further comprising a position adjusting means for adjusting the position of said film pressing member.
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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) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |