Eos of North America, Inc.

Am Ventures Holding Gmbh

Lance Bruce Shanklin

Timothy Beets

Donald L Vanelli

R D Jones

Gregory Richard Hayes

Mike D Conner

Hakan Pfeiffer

An object build area is exposed to a radiation beam, such as a laser light source, which has been processed and controlled through a grating light valve or valves, or planar light valve, to thereby melt, sinter, fuse or cure predetermined portions of the build area corresponding to the equivalent of individually controlled pixels, with rapid movement and positioning of the resulting LV application output array on the build area. The LV arrangement is adapted to also generally heat an entire powder bed, or targeted areas of the bed, to just below melting temperature.

Additive manufacture system using light valve device

A dual roller powder spreader assembly for use in layerwise manufacture in a powder bed fusion additive manufacture process utilizes in an embodiment tilting of the dual roller assembly such that a lead roller is raised upwardly relative to the powder bed in a sweep. This is accomplished using a mechanical cam-like engagement initiated at each end of the assembly's travel, causing what will then be the lead roller to rise as a whole relative to the now following roller, the latter pushing the powder pile across the powder bed. The tilt process is reversed at each end of travel.

Dual roller assembly for spreading material in additive manufacturing apparatus

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Novi, MI, United States of America

Lance Bruce Shanklin