US PATENT SUBCLASS 396 / 495
.~.~.~ Shutter blade moves continuously from closed to open to closed position

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

439  DF  CAMERA DETAIL {15}
452  DF  .~ Shutter {12}
493  DF  .~.~ Pivoting or rotating blade type {3}
495.~.~.~ Shutter blade moves continuously from closed to open to closed position {1}
496  DF  .~.~.~.~> Blade moves in opposite directions on alternate exposures

DEFINITION

Classification: 396/495

Shutter blade moves continuously from closed to open to closed position:

(under subclass 493) Subject matter comprising means for moving a blade with a first aperture in it past a second aperture so that the first aperture moves on past the second aperture to close it from light.

SEE OR SEARCH THIS CLASS, SUBCLASS:

, FOR 894+, for foreign art collections involving a shutter having pivoting or rotating blade which moves continuously from closed to open to closed position.