Patent Number: 6,305,884

Title: Rotary powder feed through apparatus

Abstract: A device for increasing the uniformity of solids within a solidsfabrication system, such as a direct light fabrication (DLF) system inwhich gas entrained powders are passed through the focal point of a movinghigh-power light which fuses the particles in the powder to a surfacebeing built up in layers. The invention provides a feed through interfacewherein gas entrained powders input from stationary input lines arecoupled to a rotating head of the fabrication system. The inventioneliminates the need to provide additional slack in the feed lines toaccommodate head rotation, and therefore reduces feed line bendingmovements which induce non-uniform feeding of gas entrained powder to arotating head.

Inventors: Lewis; Gary K. (Los Alamos, NM), Less; Richard M. (Los Alamos, NM)


International Classification:

Expiration Date: 10/23/2013