Patent DE560206C successfully refreshed from Google Patents.
US3695752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cine camera
Assignee: Nikon Corp
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Filing: 1970-08-10
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Granted: 1972-10-03
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Expires: 1990-08-10
Abstract
Abstract A cine camera with an automatic exposure control system has a device for temporarily maintaining the aperture diaphragm in a desired stop position or for manually controlling the diaphragm. A shaft is manually displaced along a path of travel against a biasing force to provide manual engagement with the diaphragm to maintain or position the diaphragm and to disconnect the automatic exposure control circuit.
Inventors
- 👤 Hideyo Nozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:04
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B19/00; G03B19/18; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
265 words
In a cine camera having an automatically controlled diaphragm for adjusting the exposure setting dependant upon seen light, the improvement comprising: a selecting member manually positionable along a path of travel; a diaphragm actuating member; movable support means for the diaphragm actuating member responsive to the position of the selecting member to move the diaphragm actuating member into and out of engagement with the diaphragm; a manually operable diaphragm control member operatively associated with thE diaphragm actuating member to adjust the diaphragm; locking means movable in response to the position of the selecting member to prevent and allow coacting movement of the manually operable diaphragm control member and the diaphragm actuating member; the selecting member biased to a first position in which the locking means prevent coacting movement between the diaphragm control member and diaphragm actuating member and the movable support means disengages the diaphragm actuating member from the diaphragm to allow automatic control of the exposure setting; first biasing means to resist displacement of the selecting member to a second position in which the movable support means engages the diaphragm actuating member with the diaphragm to maintain the diaphragm at the present setting; retaining means to hold the selecting member when displaced beyond the second position to a third position in which the locking means is moved to allow coacting movement of the manually operable diaphragm control member and the diaphragm actuating means; and releasing means to disengage the selecting member when displaced beyond the third position to a fourth position, so that the manually positionable selecting member can return to the first position.
Claim 2
Dependent Claim
265 words
In a cine camera having an automatically controlled diaphragm for adjusting the exposure setting dependant upon seen light, the improvement comprising: a selecting member manually positionable along a path of travel; a diaphragm actuating member; movable support means for the diaphragm actuating member responsive to the position of the selecting member to move the diaphragm actuating member into and out of engagement with the diaphragm; a manually operable diaphragm control member operatively associated with thE diaphragm actuating member to adjust the diaphragm; locking means movable in response to the position of the selecting member to prevent and allow coacting movement of the manually operable diaphragm control member and the diaphragm actuating member; the selecting member biased to a first position in which the locking means prevent coacting movement between the diaphragm control member and diaphragm actuating member and the movable support means disengages the diaphragm actuating member from the diaphragm to allow automatic control of the exposure setting; first biasing means to resist displacement of the selecting member to a second position in which the movable support means engages the diaphragm actuating member with the diaphragm to maintain the diaphragm at the present setting; retaining means to hold the selecting member when displaced beyond the second position to a third position in which the locking means is moved to allow coacting movement of the manually operable diaphragm control member and the diaphragm actuating means; and releasing means to disengage the selecting member when displaced beyond the third position to a fourth position, so that the manually positionable selecting member can return to the first position.
Claim 3
Dependent Claim
34 words
The cine camera according to claim 1 further comprising an electric switch for the means for automatically controlling the exposure setting; and actuating means on the selecting member operative to actuate the electrical switch.
Claim 4
Dependent Claim
32 words
The cine camera according to claim 2 further comprising a housing for the selecting member; and the selecting member being linearly slideable within the housing when displaced from one position to another.
Claim 5
Dependent Claim
29 words
The cine camera according to claim 3 further comprising: second biasing means to bias the movable support means to move the diaphragm actuating means into engagement with the diaphragm.
Claim 6
Dependent Claim
55 words
The cine camera according to claim 4 wherein the first biasing means comprise a retaining plate biased against movement from a rest position, having a sloping surface, and a retaining member on the selecting member to contact the sloping surface of the retaining plate and urge movement of the retaining plate from its rest position.
Claim 7
Dependent Claim
43 words
The cine camera according to claim 5 wherein the retaining means to hold the selecting member in the third position comprises a fixed pawl on the retaining plate to engage the retaining member when the selecting member is displaced to the third position.
Claim 8
Dependent Claim
80 words
The cine camera according to claim 6 wherein the release means to disengage the selecting member comprises a contacting surface on the retaining plate for the retaining member, the contacting surface disposed obliquely to the path of travel of the retaining member when the selecting member is displaced from the third to the fourth position, so that the retaining member will move out of contact with the retaining plate to allow the retaining plate to return to its rest position.
Claim 9
Dependent Claim
24 words
The cine camera according to claim 7 further comprising a gear train connecting the manually operable diaphragm control member to the diaphragm actuating member.
Claim 10
Dependent Claim
80 words
The cine camera according to claim 8 further comprising third biasing means to bias the locking means to the position to prevent coacting movement of the manually operable diaphragm control member and the diaphragm actuating member; and wherein the locking means further comprise a crown gear on the manually operable diaphragm control member; and a pivotally mounted latching lever biased by he third biasing means to engage the crown gear and prevent movement of the manually operable diaphragm control member.
Claim 11
Dependent Claim
44 words
The cine camera according to claim 9 wherein the manually operable diaphragm control member is rotatably disposed about the selecting member; and further comprising spring means operative with the selecting member to return the selecting member from the fourth position to the first position.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |