Patent US4479705A successfully refreshed from Google Patents.
US4479705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film transportation device in camera
Assignee: Canon Inc
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Filing: 1983-01-19
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Granted: 1984-10-30
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Expires: 2003-01-19
Abstract
Abstract A spool drive type camera in which the taking up of the film is carried out only by the rotative force of the spool, while the one-frame advancement of the film is controlled by the revolution of the sprocket as it is driven by the film transportation is provided with automatic switching means for selection of a mode in which the above-described one-frame advancement is effected by the rotative force of the winding up system when a film is not loaded in the above-described camera.
Inventors
- 👤 Hideo Tamamura
- 👤 Mutsuhide Matsuda
- 👤 Toyotosi Suzuki
- 👤 Takashi Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:22
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
138 words
A winding up device for a camera including: (a) a takeup spool; (b) winding-up means for driving said spool to move in a winding up direction; (c) a sprocket arranged to be driven to rotate as said spool winds up a film; (d) a first one-way clutch for transmitting motion of said sprocket in a film winding up direction; (e) a second one-way clutch for transmitting motion of said winding up means in the winding up direction; and (f) one-frame advancement control means cooperative with both of said first and said second one-way clutches, whereby when the film is loaded in said camera, said one-frame advancement control means is operated by the force transmitted by said first one-way clutch, and when the film is not loaded, it is operated by the force transmitted by said second one-way clutch.
Claim 2
Dependent Claim
138 words
A winding up device for a camera including: (a) a takeup spool; (b) winding-up means for driving said spool to move in a winding up direction; (c) a sprocket arranged to be driven to rotate as said spool winds up a film; (d) a first one-way clutch for transmitting motion of said sprocket in a film winding up direction; (e) a second one-way clutch for transmitting motion of said winding up means in the winding up direction; and (f) one-frame advancement control means cooperative with both of said first and said second one-way clutches, whereby when the film is loaded in said camera, said one-frame advancement control means is operated by the force transmitted by said first one-way clutch, and when the film is not loaded, it is operated by the force transmitted by said second one-way clutch.
Claim 3
Dependent Claim
47 words
A winding up device according to claim 1, further including a speed reduction gear between said winding up means and said second one-way clutch so that said sprocket runs faster, permitting said first one-way clutch to transmit motion of said sprocket to said one-frame advancement control means.
Claim 4
Dependent Claim
24 words
A winding up device according to claim 2, where said first and said second one-way clutches are arranged in coaxial relation to each other.
Claim 5
Dependent Claim
39 words
A winding up device according to claim 2, wherein said spool has a spool gear and winding up force of said winding up means is transmitted through the speed reduction gear and spool gear to said second one-way clutch.
Claim 6
Dependent Claim
44 words
A winding up device according to claim 4, further including: (g) film rewinding means; and (h) change over means for changing over the winding up force of said winding up means from one of said spool gear and said rewinding means to the other.
Claim 7
Dependent Claim
33 words
A winding up device according to claim 2, wherein said winding up means is provided with an electric motor and the driving force of said motor is utilized as the winding up force.
Claim 8
Dependent Claim
157 words
A winding up device for a camera including: (a) a takeup spool; (b) winding up means for driving said spool to move in a winding up direction; (c) a sprocket arranged to be driven to rotate as said spool winds up a film; (d) one-frame advancement control means; and (e) transmission means for transmitting either one of the driving force of said sprocket and the winding up force of said winding up means to said one-frame advancement control means, said transmission means having detecting means for detecting whether or not said sprocket is driven to rotate in the film winding up direction, whereby when rotation of said sprocket is detected by said detecting means, the driving force of said sprocket is transmitted to said one-frame advancement control means, and when standstill of said sprocket is detected by said detecting means, the winding up force of said winding up means is transmitted to said one-frame advancement control means.
Claim 9
Dependent Claim
157 words
A winding up device for a camera including: (a) a takeup spool; (b) winding up means for driving said spool to move in a winding up direction; (c) a sprocket arranged to be driven to rotate as said spool winds up a film; (d) one-frame advancement control means; and (e) transmission means for transmitting either one of the driving force of said sprocket and the winding up force of said winding up means to said one-frame advancement control means, said transmission means having detecting means for detecting whether or not said sprocket is driven to rotate in the film winding up direction, whereby when rotation of said sprocket is detected by said detecting means, the driving force of said sprocket is transmitted to said one-frame advancement control means, and when standstill of said sprocket is detected by said detecting means, the winding up force of said winding up means is transmitted to said one-frame advancement control means.
Claim 10
Dependent Claim
125 words
A winding device for a camera including: (a) a takeup spool; (b) winding means for driving said spool to move in a winding direction; (c) a sprocket arranged to rotate as said spool winds film; (d) single frame advancement control means; and (e) transmission means for transmitting either one of the driving force of said sprocket and the winding force of said winding means to said single frame advancement control means, said transmission means having a clutch for transmitting the driving force of the sprocket to the single frame advancement control means when the film is wound on the spool, and transmitting the winding force of the winding means to the single frame advancement control means when the film is not wound on the spool.
Claim 11
Dependent Claim
125 words
A winding device for a camera including: (a) a takeup spool; (b) winding means for driving said spool to move in a winding direction; (c) a sprocket arranged to rotate as said spool winds film; (d) single frame advancement control means; and (e) transmission means for transmitting either one of the driving force of said sprocket and the winding force of said winding means to said single frame advancement control means, said transmission means having a clutch for transmitting the driving force of the sprocket to the single frame advancement control means when the film is wound on the spool, and transmitting the winding force of the winding means to the single frame advancement control means when the film is not wound on the spool.
Claim 12
Dependent Claim
14 words
A winding device according to claim 8, wherein the clutch is a one-way clutch.
Claim 13
Dependent Claim
65 words
A winding device according to claim 9, wherein the transmission means has a first rotation member rotatable by the winding force of the winding means, and a second rotation member associated with the sprocket, and the one-way clutch being arranged to detect the relative speeds of the first and second rotation members and transmit the rotation force of the rotation member which is rotating faster.
Claim 14
Dependent Claim
119 words
An electric driving device for a camera, comprising: (a) a takeup spool; (b) driving means for driving said spool in a winding direction; (c) a sprocket arranged to be driven to rotate as said spool winds a film; (d) shutter charging means; (e) transmission means for transmitting either of the driving force of the sprocket and driving force of the driving means to the shutter charging means; (f) said transmission means having a clutch for transmitting the driving force of the sprocket to the shutter charging means when the film is wound on the spool, and for transmitting the driving force of the driving means to the shutter charging means when the film is not wound on the spool.
Claim 15
Dependent Claim
119 words
An electric driving device for a camera, comprising: (a) a takeup spool; (b) driving means for driving said spool in a winding direction; (c) a sprocket arranged to be driven to rotate as said spool winds a film; (d) shutter charging means; (e) transmission means for transmitting either of the driving force of the sprocket and driving force of the driving means to the shutter charging means; (f) said transmission means having a clutch for transmitting the driving force of the sprocket to the shutter charging means when the film is wound on the spool, and for transmitting the driving force of the driving means to the shutter charging means when the film is not wound on the spool.
Claim 16
Dependent Claim
21 words
An electric driving device according to claim 11, further comprising single frame advancement control means associated with the shutter charging means.
Claim 17
Dependent Claim
50 words
An electric driving device according to claim 12, further comprising film rewinding means for rewinding film and wherein the transmission means includes changeover means for transmitting the driving force of the driving means from the shutter charging means and the single frame advancement control means to the film rewinding means.
Claim 18
Dependent Claim
58 words
A winding device for a camera, comprising: a first drive system for performing a single-frame advance in correspondence to a film winding operation by means of a film; a second drive system for performing a single-frame advance in correspondence to the film winding operation without film; and means for actuating one of the first and second drive systems.
Claim 19
Dependent Claim
58 words
A winding device for a camera, comprising: a first drive system for performing a single-frame advance in correspondence to a film winding operation by means of a film; a second drive system for performing a single-frame advance in correspondence to the film winding operation without film; and means for actuating one of the first and second drive systems.
Claim 20
Dependent Claim
45 words
A winding device according to claim 14, wherein the actuating means is a detection means for detecting a speed difference between the first and second drive systems, said detecting means actuating either of the first and second drive systems operating at a greater driving speed.
Claim 21
Dependent Claim
83 words
A winding device for a camera, comprising: a first drive system for performing a shutter charge in correspondence to a winding operation by means of a film; a second drive system for performing a shutter charge in correspondence to a winding operation without film; and means for effectuating either of the first and second drive systems and nullifying at least one of the first and second drive systems when the drive of the drive systems is changed from one direction to another direction.
Claim 22
Dependent Claim
83 words
A winding device for a camera, comprising: a first drive system for performing a shutter charge in correspondence to a winding operation by means of a film; a second drive system for performing a shutter charge in correspondence to a winding operation without film; and means for effectuating either of the first and second drive systems and nullifying at least one of the first and second drive systems when the drive of the drive systems is changed from one direction to another direction.
Claim 23
Dependent Claim
80 words
A winding device for a camera, comprising: a first drive system for performing a single-frame advance in correspondence to a winding operation by means of a film; a second drive system for performing a single-frame advance in correspondence to the winding operation without film; and selection means for effectuating either of the first and second drive systems and effectuating the first drive system when the film is loaded and effectuating the second drive system when the film is not loaded.
Claim 24
Dependent Claim
80 words
A winding device for a camera, comprising: a first drive system for performing a single-frame advance in correspondence to a winding operation by means of a film; a second drive system for performing a single-frame advance in correspondence to the winding operation without film; and selection means for effectuating either of the first and second drive systems and effectuating the first drive system when the film is loaded and effectuating the second drive system when the film is not loaded.
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) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |