Patent US4339187A successfully refreshed from Google Patents.
US4339187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographing apparatus
Assignee: Olympus Corp
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Filing: 1980-10-03
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Granted: 1982-07-13
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Expires: 2000-10-03
Abstract
Abstract A photographing apparatus detects whether a film winding assembly mounted utilizes an automatic or a manual film winding mechanism. The apparatus includes detecting means in the form of a diode across which a voltage is developed in response to a current flow through a film winding motor of the automatic film winding mechanism. The voltage developed across the diode permits a discrimination whether the film winding assembly mounted utilizes an automatic or a manual film winding mechanism.
Inventors
- 👤 Tsuyoshi Matsuura
- 👤 Mamoru Aihara
- 👤 Yutaka Takahashi
- 👤 Yoshio Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42; G03B17/425
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A photographing apparatus comprising a receiver for receiving a film winding assembly which may be provided with either an automatic film winding mechanism which includes a motor to perform an automatic film winding operation or a manual film winding mechanism which permits a manual film winding operation; means for detecting the operative condition of the motor in the automatic film winding mechanism whenever a film winding assembly which is provided with the automatic film winding mechanism is mounted in the receiver; and means responsive to an output signal from the detecting means for producing an output signal to said motor for discriminating whether there is mounted a film winding assembly provided with the automatic film winding mechanism or a film winding assembly provided with the manual film winding mechanism.
Claim 2
Dependent Claim
129 words
A photographing apparatus comprising a receiver for receiving a film winding assembly which may be provided with either an automatic film winding mechanism which includes a motor to perform an automatic film winding operation or a manual film winding mechanism which permits a manual film winding operation; means for detecting the operative condition of the motor in the automatic film winding mechanism whenever a film winding assembly which is provided with the automatic film winding mechanism is mounted in the receiver; and means responsive to an output signal from the detecting means for producing an output signal to said motor for discriminating whether there is mounted a film winding assembly provided with the automatic film winding mechanism or a film winding assembly provided with the manual film winding mechanism.
Claim 3
Dependent Claim
53 words
A photographing apparatus according to claim 1 in which the detecting means comprises a detection circuit including a diode through which a motor current flows, the diode developing a voltage thereacross which corresponds to the motor current, and a comparison circuit for comparing the voltage developed across the diode against a reference voltage.
Claim 4
Dependent Claim
28 words
A photographing apparatus according to claim 2 in which the detecting means further comprises a one-shot multivibrator which is triggered by an output signal from the comparison circuit.
Claim 5
Dependent Claim
26 words
A photographing apparatus according to claim 3 in which the detecting means further includes a photocoupler which is energized by an output signal from the multivibrator.
Claim 6
Dependent Claim
15 words
A photographing apparatus according to claim 1 in which the discriminating means comprises a computer.
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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |