Patent US3636846A successfully refreshed from Google Patents.
US3636846A
Expired / Lapsed
US
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Single lens reflex camera with focal plane shutter unit
Assignee: Compur Werk GmbH and Co
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Filing: 1970-06-26
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Granted: 1972-01-25
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Expires: 1990-06-26
Abstract
Abstract A photographic camera of the single lens reflex-type with a focal plane shutter, in which the shutter is part of a preassembled unit which also includes the pivoted mirror and the interacting connections between the mirror and the shutter mechanism to insure operation of the swinging mirror in proper timed relation to the operation of the shutter slides or blades. This eliminates the assembling difficulties frequently encountered in prior cameras of the same general type, in which the mirror and its operating mechanism are customarily assembled on the camera body before the focal plane shutter unit is installed, the assembly of the proper connections between the shutter unit and the mirror and other parts mounted on the camera body being frequently quite troublesome.
Inventors
- 👤 Franz Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:24
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12; G03B17/00; G03B17/42; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
213 words
A single lens mirror reflex camera with a focal plane shutter, comprising a camera housing, film feeding mechanism, and a self-contained shutter assembly unit adapted to be inserted into and secured in the camera housing, said camera including a quick return pivoted reflex mirror movable from an observation position to a picture taking position, a movable shutter having a plurality of movable slides, a shutter housing containing said movable shutter, and operating and control members for operating and controlling movements of said mirror and said shutter in predetermined sequence relative to each other, said mirror and said operating and control members being mounted on said shutter housing and constituting part of said self-contained shutter assembly unit and being arranged to be bodily inserted into said camera housing as part of said unit, characterized by the fact that said operating and control members include a cocking member (402) mounted on said shutter housing (24) and coupled to the film feeding mechanism (16, 16c) of the camera, and by the fact that driving springs (230, 232, 234, 236) for the shutter slides (30, 32, 34, 36) and also a power source (422) for swinging said pivoted mirror (426) from observation positiOn to picture taking position are loaded by cocking movement of said cocking member (402).
Claim 2
Dependent Claim
213 words
A single lens mirror reflex camera with a focal plane shutter, comprising a camera housing, film feeding mechanism, and a self-contained shutter assembly unit adapted to be inserted into and secured in the camera housing, said camera including a quick return pivoted reflex mirror movable from an observation position to a picture taking position, a movable shutter having a plurality of movable slides, a shutter housing containing said movable shutter, and operating and control members for operating and controlling movements of said mirror and said shutter in predetermined sequence relative to each other, said mirror and said operating and control members being mounted on said shutter housing and constituting part of said self-contained shutter assembly unit and being arranged to be bodily inserted into said camera housing as part of said unit, characterized by the fact that said operating and control members include a cocking member (402) mounted on said shutter housing (24) and coupled to the film feeding mechanism (16, 16c) of the camera, and by the fact that driving springs (230, 232, 234, 236) for the shutter slides (30, 32, 34, 36) and also a power source (422) for swinging said pivoted mirror (426) from observation positiOn to picture taking position are loaded by cocking movement of said cocking member (402).
Claim 3
Dependent Claim
106 words
A camera as defined in claim 1, further characterized by the fact that said cocking member (402) is in the form of a pivoted lever and is coupled to said film-feeding mechanism (16, 16c) by a connecting member (405), and by the fact that said cocking member has an arm (402a) which engages an extension (30s) on one of said shutter slides (30, 130) to move said slides to load said driving springs (230, 232, 234, 236), and by the fact that said cocking member has a pin (406) which causes movement of mechanism (408, 414, 416) for loading said power source (422) of said mirror.
Claim 4
Dependent Claim
56 words
A camera as defined in claim 1, wherein said reflex mirror is held in observation position by a latching lever (434), characterized by the fact that said latching lever is mounted on said shutter housing (24) of said shutter assembly unit and is adapted to be coupled with a trip member (20) on said camera housing.
Claim 5
Dependent Claim
77 words
A camera as defined in claim 3, wherein there is a latching lever (338) for holding the shutter slides (30, 32, 34, 36) in cocked position, characterized by the fact that said latching lever (338) is mounted on said shutter housing (24) of said assembly unit and is operated and moved to unlatching position by a projection (424bb) connected with said reflex mirror (426) during movement of said reflex mirror from observation position to picture taking position.
Claim 6
Dependent Claim
79 words
A camera as defined in claim 2, characterized by the fact that said mechanism for loading said power source includes an operating lever (416) which is held in cocked position by a latching lever (440b) which is mounted on said shutter housing (24) of said shutter assembly unit, and that said latching lever is moved to an unlatching position by an extension (134k) on a shutter slide (34, 134) during running down of said shutter slide to closing 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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |