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Powder Delivery Apparatus
Lin Li, Wei Wang, Waheed Syed
The Universityof Manchester , Bureau of WIPO. WO/2008/003942 . 2008 Jan 10..
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Abstract
A direct radiation deposition apparatus comprising a feed conduit and a nozzle arranged to deliver powder to a substrate, and a radiation source arranged to simultaneously direct a radiation beam onto the substrate and thereby melt the powder, wherein the apparatus further comprises an actuator arranged to apply a vibration to the nozzle which causes powder to fall from the nozzle onto the substrate