US3590715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adapter and objective for use in photographic apparatus
Assignee: Steinheil Lear Siegler AG
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Filing: 1969-09-29
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Granted: 1971-07-06
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Expires: 1989-09-29
Abstract
Abstract An objective wherein the diaphragm can be preset by a lever mounted on its barrel and can be cocked by a diaphragm cocking device in a camera with an exposure control. The objective can be coupled to several types of cameras by means of adapters provided with at least one cam serving to transmit motion to the lever in such a way that the lever moves in a single direction irrespective of the direction of movement of the cam. The cam can be moved by a manually operated ring which is turnable on the adapter with reference to a fixed diaphragm scale. The cam compensates for eventual differences between such angular movements of the ring which are needed to move the ring between successive positions indicating different f/stops and corresponding angular movements of the lever in order to change the aperture size by full f/stops. According to the particular type of the camera and its exposure control, the ring is turnable in clockwise or in counterclockwise. A pin or the like on the ring is in engagement with the exposure control.
Inventors
- 👤 Artur Schops
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:41
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
123 words
For use with photographic apparatus of the type having a body accommodating an exposure control including diaphragm adjusting output means, a combination comprising an objective having a barrel, an adjustable diaphragm in said barrel, and adjusting means mounted on said barrel and movable in a given direction between a first series of positions to thereby select a succession of aperture sizes; and ad adapter including first and second connecting means for respectively coupling the adapter to the body of the apparatus and to said objective, said adapter further including actuating means arranged to move in one of several directions between a second series of positions to thereby effect movement of said adjusting means between said first series of positions in said given direction.
Claim 2
Dependent Claim
123 words
For use with photographic apparatus of the type having a body accommodating an exposure control including diaphragm adjusting output means, a combination comprising an objective having a barrel, an adjustable diaphragm in said barrel, and adjusting means mounted on said barrel and movable in a given direction between a first series of positions to thereby select a succession of aperture sizes; and ad adapter including first and second connecting means for respectively coupling the adapter to the body of the apparatus and to said objective, said adapter further including actuating means arranged to move in one of several directions between a second series of positions to thereby effect movement of said adjusting means between said first series of positions in said given direction.
Claim 3
Dependent Claim
60 words
A combination as defined in claim 1, wherein said adjusting means comprises follower means and said actuating means comprises a manually rotatable ring and cam means cooperating with said follower means and movable by said ring to move said adjusting means between said first series of positions in response to rotation of said ring between said second series of positions.
Claim 4
Dependent Claim
39 words
A combination as defined in claim 2, wherein said adjusting means further comprises a lever mounted on said barrel and pivotable about a predetermined axis between said first series of positions, said follower means being provided on said lever.
Claim 5
Dependent Claim
39 words
A combination as defined in claim 3, wherein the extent of angular movements of said lever between said first series of positions is different from the extent of angular movements of said ring between said second series of positions.
Claim 6
Dependent Claim
20 words
A combination as defined in claim 2, wherein said cam means and said ring are located in mutually inclined planes.
Claim 7
Dependent Claim
84 words
A combination as defined in claim 1, wherein said barrel includes an end wall and said adjusting means comprises a lever pivotally mounted on said end wall and having follower means and a selector member extending into said barrel, said actuating means comprising a cam movably mounted on said adapter and cooperating with said follower means to move said lever and said selector member between said first series of positions in response to manual displacement of said cam between said second series of positions.
Claim 8
Dependent Claim
17 words
A combination as defined in claim 6, wherein said follower is in permanent engagement with said cam.
Claim 9
Dependent Claim
18 words
A combination as defined in claim 6, further comprising means for biasing said follower means against said cam.
Claim 10
Dependent Claim
42 words
A combination as defined in claim 1, further comprising a coupling device having locating means for locating said actuating means in a predetermined initial position with reference to said adapter as a function of the power of the lens in said objective.
Claim 11
Dependent Claim
33 words
A combination as defined in claim 9, wherein said coupling device comprises at least one spring-biased projection arranged to engage said actuating means in response to connection of said objective to said adapter.
Claim 12
Dependent Claim
14 words
A combination as defined in claim 9, wherein said objective comprises an interchangeable lens.
Claim 13
Dependent Claim
33 words
A combination as defined in claim 11, wherein said locating means comprises a plurality of locating projections and means for moving at least one of said projections into engagement with said actuating means.
Claim 14
Dependent Claim
27 words
A combination as defined in claim 9, wherein said locating means includes means for maintaining said objective in a predetermined angular position with reference to said adapter.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |