| 摘要 |
A bi-parting shutter system 12 is provided for an enclosure (not shown) having an aperture therein which is covered by two slidably displaceable shutters 14, 16. The shutters 14, 16 are connected by a flexible belt 20 arranged in a track 18 and looped around two freely rotatable pulley wheels 22, 24. This arrangement defines a first belt run 26, which is connected to first shutter 14 by way of attachment means 30, and a second belt run 28 similarly connected to second shutter 16 by way of respective attachment means 32. In order to provide a compact arrangement the second arttachment means 32 includes a bracket member 34 having a generally hollow square cross section and located with the track 18. This permits the first belt run 26 to freely pass through the second attachment means. In this way movement of one shutter 14, 16 is transmitted to the other shutter without requiring a complicated or bulky connection.
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