Patent US4278340A successfully refreshed from Google Patents.
US4278340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera having an automatic focus adjusting device
Assignee: Canon Inc
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Filing: 1980-07-23
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Granted: 1981-07-14
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Expires: 2000-07-23
Abstract
Abstract The present invention relates to a camera having an automatic focus adjusting device, being characterized in that the motor for the focus adjustment is not provided particularly, whereby the motor for the shutter operation and the film feeding is changed over by means of a clutch so as to be used for the focus adjustment.
Inventors
- 👤 Masamichi Toyama
- 👤 Noritsugu Hirata
- 👤 Hideto Iwama
- 👤 Hidekazu Okajima
- 👤 Akimasa Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:22
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/08; G02B7/28; G02B7/30; G02B7/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
45 words
A camera having an automatic focus adjusting device comprising: shutter means; means for controlling the position of the focusing lens; an electric motor; and clutch means for selectively transmitting the driving power of the motor to the shutter or to the lens position control means.
Claim 2
Dependent Claim
45 words
A camera having an automatic focus adjusting device comprising: shutter means; means for controlling the position of the focusing lens; an electric motor; and clutch means for selectively transmitting the driving power of the motor to the shutter or to the lens position control means.
Claim 3
Dependent Claim
109 words
A camera having an automatic focus adjusting device comprising: shutter means; means for controlling the position of the focusing lens; an automatic focus detecting circuit; means for presetting the adjusting position of the focusing lens by means of the output of the automatic focus detecting circuit; an electric motor; clutch means for selectively transmitting the driving power of the motor to the shutter means or the lens position control means; and spring means for driving the preset means, said means connecting the lens position control means to the adjusting position preset means so as to be energized with the driving power by means of the rotation of the motor.
Claim 4
Dependent Claim
109 words
A camera having an automatic focus adjusting device comprising: shutter means; means for controlling the position of the focusing lens; an automatic focus detecting circuit; means for presetting the adjusting position of the focusing lens by means of the output of the automatic focus detecting circuit; an electric motor; clutch means for selectively transmitting the driving power of the motor to the shutter means or the lens position control means; and spring means for driving the preset means, said means connecting the lens position control means to the adjusting position preset means so as to be energized with the driving power by means of the rotation of the motor.
Claim 5
Dependent Claim
106 words
A camera having an automatic focus adjusting device comprising: shutter means; cam means for controlling the position of the focusing lens; an electric motor; a spring clutch for selectively transmitting the driving power of the motor to the shutter or the cam means; an automatic focus adjusting circuit; cam means for presetting the stop position of the focusing lens by means of the output of the circuit; and a spring for driving the preset cam means, said means connecting the lens control cam means to the preset cam means so as to be energized with the driving power by means of the rotation of the motor.
Claim 6
Dependent Claim
106 words
A camera having an automatic focus adjusting device comprising: shutter means; cam means for controlling the position of the focusing lens; an electric motor; a spring clutch for selectively transmitting the driving power of the motor to the shutter or the cam means; an automatic focus adjusting circuit; cam means for presetting the stop position of the focusing lens by means of the output of the circuit; and a spring for driving the preset cam means, said means connecting the lens control cam means to the preset cam means so as to be energized with the driving power by means of the rotation of the motor.
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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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |