Shutter device for a photographic camera
AssigneeSinar AG Schaffhausen
InventorsCarl Koch, Karl Gfeller
Life of this patent
Estimating the term…
Abstract
A shutter device for a photographic camera has a pair of shutter blade members movable between first and second rest positions for opening or closing the camera aperture, including drive devices associated with the blade members for moving them in the same direction during an exposure sequentially and at a time interval, from the first to the second rest position. Additional drive devices associated with the shutter blade members are provided which, for a subsequent exposure, are capable of returning the blade members sequentially and at a time interval, in opposite direction, from the second to the first rest position.
Claims13
A shutter device for a photographic camera, including two shutter blade members each mounted for movement between a first and a second rest position for opening and closing a camera aperture, first drive devices mounted on said camera and being operatively associated with each of said shutter blade members for moving said blade members during an exposure sequentially and at a time interval, in the same direction, from the first rest position to the second rest position, and second drive devices mounted on said camera and being operatively associated with each of said shutter blade members for returning moving said blade members during a subsequent exposure sequentially and at a time interval, in an opposite direction, from the second to the first rest position, each of said shutter blade members being mounted in place for free rotation movement, and each of said drive devices including a percussion armature having a striker means mounted at one end thereof, said drive devices functioning with an associated shutter blade member via said striker means in such a manner that said shutter blade members are movable from the first to the second rest position, and vice versa, by means of the percussion armature of said drive devices, through sudden acceleration and subsequent free travel.
A shutter device for a photographic camera including a first and a second shutter blade members each mounted for independent movement between a first and a second rest position for opening and closing a camera aperture, the first shutter blade member in its first rest position entirely covering said aperture and in its second rest position being located away from said aperture at one side thereof, the second shutter blade members in its first rest position being located away from said aperture at an opposite side thereof and in its second rest position entirely covering said aperture, and further including first drive devices mounted on said camera and being operatively associated with each of said shutter blade members for moving said shutter blade members sequentially and at a time interval suitable for an exposure, in the same direction, from the first rest positions to the second rest positions, and second drive devices mounted on said camera and being operatively associated with each of said shutter blade members for moving said shutter blade members sequentially and at a time interval suitable for an exposure, in an opposite direction, from the second to the first rest positions.
Dependencies are inferred from the claim text.