| 摘要 |
A spraying booth for facilitating the recovery of the surplus of pulverulent material used to coat an object includes at the rear means for enabling it to communicate with an air extraction installation. The booth is open at the front to give access to the gun, and is provided with a plurality of rotatable blades which when rotated into a first transverse plane move air uniformly through the rear of the booth and when rotated into a second perpendicular position may be returned to the interior of the booth without disturbing the air in the booth.
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