US4405221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera motor drive mechanisms
Assignee: Minolta Co Ltd
•
Filing: 1981-10-14
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Granted: 1983-09-20
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Expires: 2001-10-14
Abstract
Abstract In a motor drive mechanism for a camera, a film winding mechanism is actuated by a first motor and a second motor is selectively connected to either a control device for automatically performing a preparatory photographic operation prior to the commencement of an exposure or to a film rewinding mechanism.
Inventors
- 👤 Fumio Yoshida
- 👤 Yukio Miki
- 👤 Takeshi Egawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:02
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A motor drive camera, comprising: a first motor; a film winding mechanism connected to said first motor, said film winding mechanism being capable of winding a film when said first motor is actuated; a second motor; a control device for automatically performing a preparatory operation prior to the commencement of an exposure; film rewinding mechanism for rewinding an exposed film; and means for connecting said second motor alternatively to said control device and to said film rewinding mechanism.
Claim 2
Dependent Claim
78 words
A motor drive camera, comprising: a first motor; a film winding mechanism connected to said first motor, said film winding mechanism being capable of winding a film when said first motor is actuated; a second motor; a control device for automatically performing a preparatory operation prior to the commencement of an exposure; film rewinding mechanism for rewinding an exposed film; and means for connecting said second motor alternatively to said control device and to said film rewinding mechanism.
Claim 3
Dependent Claim
26 words
A motor drive camera as set forth in claim 1, wherein said first and second motors are located on opposite sides of a photographic optical path.
Claim 4
Dependent Claim
19 words
A motor drive camera as set forth in claim 2, wherein said control device includes an automatic focusing device.
Claim 5
Dependent Claim
80 words
A motor drive camera as set forth in claim 1, wherein said means for connecting includes a first clutch gear for enabling transmission from said second motor to said film rewinding mechanism, a second clutch gear for enabling transmission from said second motor to said control device, and an externally located manually operable member movable between a first position for disabling the transmission of said first clutch gear and a second position for disabling the transmission of said second gear.
Claim 6
Dependent Claim
23 words
A motor drive camera as set forth in claim 4 further comprising a control circuit for simultaneously actuating said first and second motors.
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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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |