US3713373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for releasing the shutter driving mechanism of a photographic camera to obtain long exposure time
Assignee: Nikon Corp
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Filing: 1971-06-23
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Granted: 1973-01-30
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Expires: 1991-06-23
Abstract
Abstract Apparatus for releasing the shutter driving mechanism of a photographic camera to obtain long exposure time when the camera shutter is set at a B-position having a manually operable shutter release button, a manually operable self-timer, interlocking members movable between an upper position in which the shutter driving mechanism remains charged and a lower position in which the shutter driving mechanism starts exposure and starts the self-timer, the interlocking means being biased towards its upper position and movable to its lower position by the shutter release button, a second shutter release member mounted in the self-timer to release the engagement of the interlocking members with the shutter release button for allowing the interlocking members to move to their upper position to complete the exposure when the set time has elapsed.
Inventors
- 👤 A Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:01
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/02; G04F3/025; G03; G03B; G03B19/00; G03B19/02; G03B19/12; G03B9/00; G03B9/58
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
229 words
An apparatus adapted for releasing a shutter driving mechanism of a photographic camera to obtain long exposure time when the camera shutter is set at a B-position comprising 1. a manually operable shutter release button (142, 143) movable between a first position and a second position; 2. a manually operable self-timer (101-123) for setting to different times, mounted in said camera; 3. interlocking means (126,135,150) movable between an upper position in which said shutter driving mechanism remains charged and a lower position in which said shutter driving mechanism starts to be released to start exposure and said self-timer starts; said interlocking means being biased toward said upper position and operatively engaged with the shutter release button in such a manner that the interlocking means is moved to the lower position thereof when the shutter release button is moved to the second position thereof, 4. a second shutter release member (107) mounted in the selftimer to operatively associate with the interlocking means in such a manner that the second shutter release member releases the engagement of the interlocking means, which is in the lower position thereof, with the shutter release button for moving the interlocking means from the lower position into the upper position thereof to complete exposure when the set time of the self-timer is over, whereby exposure time is in accord with the set time of the self-timer.
Claim 2
Independent Claim
229 words
An apparatus adapted for releasing a shutter driving mechanism of a photographic camera to obtain long exposure time when the camera shutter is set at a B-position comprising 1. a manually operable shutter release button (142, 143) movable between a first position and a second position; 2. a manually operable self-timer (101-123) for setting to different times, mounted in said camera; 3. interlocking means (126,135,150) movable between an upper position in which said shutter driving mechanism remains charged and a lower position in which said shutter driving mechanism starts to be released to start exposure and said self-timer starts; said interlocking means being biased toward said upper position and operatively engaged with the shutter release button in such a manner that the interlocking means is moved to the lower position thereof when the shutter release button is moved to the second position thereof, 4. a second shutter release member (107) mounted in the selftimer to operatively associate with the interlocking means in such a manner that the second shutter release member releases the engagement of the interlocking means, which is in the lower position thereof, with the shutter release button for moving the interlocking means from the lower position into the upper position thereof to complete exposure when the set time of the self-timer is over, whereby exposure time is in accord with the set time of the self-timer.
Claim 3
Independent Claim
28 words
An apparatus adapted for releasing a shutter driving mechanism of a photographic camera to obtain long exposure time when the camera shutter is set at a B-position comprising
Claim 4
Independent Claim
28 words
An apparatus adapted for releasing a shutter driving mechanism of a photographic camera to obtain long exposure time when the camera shutter is set at a B-position comprising
Claim 5
Dependent Claim
17 words
a manually operable shutter release button (142, 143) movable between a first position and a second position;
Claim 6
Dependent Claim
17 words
a manually operable shutter release button (142, 143) movable between a first position and a second position;
Claim 7
Dependent Claim
14 words
a manually operable self-timer (101-123) for setting to different times, mounted in said camera;
Claim 8
Dependent Claim
14 words
a manually operable self-timer (101-123) for setting to different times, mounted in said camera;
Claim 9
Dependent Claim
20 words
An apparatus as defined in claim 1, wherein said manually operable shutter release button is biased toward the first position.
Claim 10
Dependent Claim
26 words
An apparatus as defined in claim 2, further comprising means (145, 144a, 142a) for locking the manually operable shutter release button in the second position thereof.
Claim 11
Dependent Claim
81 words
interlocking means (126,135,150) movable between an upper position in which said shutter driving mechanism remains charged and a lower position in which said shutter driving mechanism starts to be released to start exposure and said self-timer starts; said interlocking means being biased toward said upper position and operatively engaged with the shutter release button in such a manner that the interlocking means is moved to the lower position thereof when the shutter release button is moved to the second position thereof,
Claim 12
Dependent Claim
81 words
interlocking means (126,135,150) movable between an upper position in which said shutter driving mechanism remains charged and a lower position in which said shutter driving mechanism starts to be released to start exposure and said self-timer starts; said interlocking means being biased toward said upper position and operatively engaged with the shutter release button in such a manner that the interlocking means is moved to the lower position thereof when the shutter release button is moved to the second position thereof,
Claim 13
Dependent Claim
85 words
a second shutter release member (107) mounted in the self-timer to operatively associate with the interlocking means in such a manner that the second shutter release member releases the engagement of the interlocking means, which is in the lower position thereof, with the shutter release button for moving the interlocking means from the lower position into the upper position thereof to complete exposure when the set time of the self-timer is over, whereby exposure time is in accord with the set time of the self-timer.
Claim 14
Dependent Claim
85 words
a second shutter release member (107) mounted in the self-timer to operatively associate with the interlocking means in such a manner that the second shutter release member releases the engagement of the interlocking means, which is in the lower position thereof, with the shutter release button for moving the interlocking means from the lower position into the upper position thereof to complete exposure when the set time of the self-timer is over, whereby exposure time is in accord with the set time of the self-timer.
Claim 15
Dependent Claim
65 words
Apparatus according to claim 1 wherein said shutter driving mechanism includes a mirror dRiving lever, a retaining lever for restraining said mirror driving lever, said interlocking means being mounted to release said retaining lever when moved to its lower position, a front curtain retaining lever, means responsive to movement of said mirror driving lever to start said self-timer and simultaneously release said curtain retaining lever.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |