1988-04-21
1989-11-14
Mathews, A. A.
354261, G03B 910
Patent
active
048810932
ABSTRACT:
An electromagnetically operated shutter assembly for a camera includes permanent magnets which are affixed to shutter blades. An electromagnetic field is generated by a number of armatures which interact with the permanent magnets to cause the shutter blades to move between open and closed positions. The configurations of the permanent magnets and armatures permit the blades to be held in the open and closed positions without the further application of current to the armatures. The permanent magnets are "levitated" by the electromagnetic field in order to facilitate movement of the shutter blades between the opening and closing positions.
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Eastman Kodak Company
Mathews A. A.
Smith James A.
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