US4616913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
•
Filing: 1985-05-30
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Granted: 1986-10-14
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Expires: 2005-05-30
Abstract
Abstract A multi-motor driven camera in which the shutter-charging drive torque transmission is provided with a first electric motor, the film winding drive torque transmission with a second electric motor, and the film rewinding drive torque transmission with a third electric motor whereby a charging system of high efficiency can be formed.
Inventors
- 👤 Masayuki Suzuki
- 👤 Hidehiko Fukahori
- 👤 Masaharu Kawamura
- 👤 Yoshihito Harada
- 👤 Ryuichi Kobayashi
- 👤 Tsunemasa Ohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:18
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
62 words
A camera comprising: (a) a shutter charging transmission system; (b) a first electric motor for driving at least said shutter charging transmission system; (c) a film winding transmission system; (d) a second electric motor for driving at least said film winding transmission system; (e) a film rewinding transmission system; and (f) a third electric motor for driving said film rewinding transmission system.
Claim 2
Dependent Claim
62 words
A camera comprising: (a) a shutter charging transmission system; (b) a first electric motor for driving at least said shutter charging transmission system; (c) a film winding transmission system; (d) a second electric motor for driving at least said film winding transmission system; (e) a film rewinding transmission system; and (f) a third electric motor for driving said film rewinding transmission system.
Claim 3
Dependent Claim
36 words
A camera according to claim 1, wherein at least one of said three transmission systems includes a change-over mechanism for changing the transmission path as the direction of rotation of said electric motor is changed over.
Claim 4
Dependent Claim
15 words
A camera according to claim 2, wherein said transmission paths have different speed reduction ratios.
Claim 5
Dependent Claim
31 words
A camera according to claim 2, wherein said transmission paths have a transmission path until the final stage and another path in which transmission is cut off at an intermediate stage.
Claim 6
Dependent Claim
14 words
A camera according to claim 2, wherein, said change-over mechanism includes a planetary clutch.
Claim 7
Dependent Claim
112 words
A camera having a camera body comprising: (a) a shutter charging transmission system; (b) a first electric motor for driving at least said shutter charging transmission system, this first electric motor being arranged in a grip formed as projecting forwardly of the camera body: (c) a film winding transmission system; (d) a second electric motor for driving at least said film winding transmission system, this second electric motor being arranged on a spool side of the camera body; (e) a film rewinding transmission system; and (f) a third electric motor for driving said film rewinding transmission system, this third electric motor being arranged on a rewind shaft side of the camera body.
Claim 8
Dependent Claim
112 words
A camera having a camera body comprising: (a) a shutter charging transmission system; (b) a first electric motor for driving at least said shutter charging transmission system, this first electric motor being arranged in a grip formed as projecting forwardly of the camera body: (c) a film winding transmission system; (d) a second electric motor for driving at least said film winding transmission system, this second electric motor being arranged on a spool side of the camera body; (e) a film rewinding transmission system; and (f) a third electric motor for driving said film rewinding transmission system, this third electric motor being arranged on a rewind shaft side of the camera body.
Claim 9
Dependent Claim
36 words
A camera according to claim 6, wherein at least one of said three transmission systems includes a change-over mechanism for changing the transmission path as the direction of rotation of said electric motor is changed over.
Claim 10
Dependent Claim
15 words
A camera according to claim 7, wherein said transmission paths have different speed reduction ratios.
Claim 11
Dependent Claim
31 words
A camera according to claim 7, wherein said transmission paths have a transmission path until the final stage and another path in which transmission is cut off at an intermediate stage.
Claim 12
Dependent Claim
14 words
A camera according to claim 7, wherein said changeover mechanism includes a planetary clutch.
Claim 13
Dependent Claim
22 words
A camera according to claim 6, wherein said shutter charging transmission system is arranged in a bottom portion of the camera body.
Claim 14
Dependent Claim
16 words
A camera according to claim 6, wherein said second electric motor is arranged in said spool.
Claim 15
Dependent Claim
18 words
A camera according to claim 6, wherein said third electric motor is arranged adjacent to a cassette chamber.
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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |