Patent US2745510A successfully refreshed from Google Patents.
Patent US4166686A successfully refreshed from Google Patents.
US4166686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter-control mechanism for photographic camera
Assignee: PLAUBEL FEINMECHANIK AND OPTIK GmbH
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Filing: 1977-09-07
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Granted: 1979-09-04
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Expires: 1997-09-07
Abstract
Abstract A disk rigid with a member of a gear train for the control of a spring-loaded setting ring of a shutter, connected via a lost-motion coupling with a wind-up lever, is rotatably mounted on a camera housing alongside a focusing knob which controls the displacement of a lens mount linked with the housing through a bellows. The knob has a tubular stem accommodating a pushbutton which, through a pair of outwardly projecting lugs, rests on a surrounding leaf spring having a tongue that engages in a notch of the disk in the cocked position of the shutter. Depression of the pushbutton disengages the tongue from its notch to release the shutter; such depression may be blocked by an underlying stop in a collapsed position of the camera.
Inventors
- 👤 Goetz Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:02
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
In a camera provided with a housing adapted to receive a photographic film to be exposed, lens means axially movable with reference to the film plane, a focusing knob on said housing operatively coupled with said lens means for axially moving same, a shutter in line with said lens means spring-biased into a normal position and displaceable into a cocked position, and an actuating mechanism on said housing for operating said shutter, the improvement wherein said actuating mechanism comprises: wind-up means including a rotatable disk alongside said knob operatively coupled with said shutter for displacing same into its cocked position; a retaining member having a coupling formation engageable with a mating formation of said disk for holding said shutter in said cocked position; and trigger means including a pushbutton coaxially received in said knob for deactivating said detent means to release said shutter, said pushbutton having an extension engageable with said retaining member for depressing same.
Claim 2
Dependent Claim
156 words
In a camera provided with a housing adapted to receive a photographic film to be exposed, lens means axially movable with reference to the film plane, a focusing knob on said housing operatively coupled with said lens means for axially moving same, a shutter in line with said lens means spring-biased into a normal position and displaceable into a cocked position, and an actuating mechanism on said housing for operating said shutter, the improvement wherein said actuating mechanism comprises: wind-up means including a rotatable disk alongside said knob operatively coupled with said shutter for displacing same into its cocked position; a retaining member having a coupling formation engageable with a mating formation of said disk for holding said shutter in said cocked position; and trigger means including a pushbutton coaxially received in said knob for deactivating said detent means to release said shutter, said pushbutton having an extension engageable with said retaining member for depressing same.
Claim 3
Dependent Claim
23 words
The improvement defined in claim 1 wherein said wind-up means further comprises an operating lever connected with said disk via a lost-motion coupling.
Claim 4
Dependent Claim
52 words
The improvement defined in claim 1 wherein said retaining member is a leaf spring generally coplanar with said disk and provided with an aperture, said knob having a hollow stem traversing said aperture and forming a seat for said pushbutton, said extension passing substantially axially through a lateral slit in said stem.
Claim 5
Dependent Claim
69 words
The improvement defined in claim 3 wherein said lens means is carried by a lens mount movable relatively to said housing for focusing purposes, further comprising a linkage connecting said lens mount with said housing and transmission means operatively coupling said knob with said linkage, said transmission means including a shaft rigid with said stem, a pinion on said shaft and a rack member in mesh with said pinion.
Claim 6
Dependent Claim
41 words
The improvement defined in claim 4 wherein said lens mount is receivable in said housing in a collapsed position, further comprising stop means on said lens mount juxtaposable with said leaf spring for preventing a depression thereof in said collapsed position.
Claim 7
Dependent Claim
30 words
The improvement defined in claim 3 wherein said coupling formation is a tongue integral with said leaf spring, said mating formation being a notch in the periphery of said disk.
Claim 8
Dependent Claim
20 words
The improvement defined in claim 1 wherein said wind-up means further comprises a gear train drivingly coupled with said disk.
References Cited (Backward Citations)
US3398666A
Cited
US3922693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |