Hewlett-packard Development Company, L.p.

Gunay Ozturk

Robert M Yraceburu

Kevin E Swier

William F Winters

Charles Hugh Oppenheimer

Kevin B Hulick

Steve Ringwald

In an example implementation, a powder metering device to move powder in a 3D printing system includes a rotor comprising a central hub and peripheral wheel to rotate about a shaft. Compartments are formed between the hub and the wheel by a plurality of fins that emanate from the hub at first fin ends and affix to the wheel at second fin ends. A top and bottom disk each have a planar surface to lie flush against and to seal, respectively, top and bottom perimeters of each compartment as the compartments rotate about the shaft between a powder receiving position and a powder dispensing position.

Moving powder in a 3D printing system

A fan includes: a housing; and an impeller with an axis and a plurality of blades, the impeller mounted inside the housing; and a plurality of outlets from the housing, each outlet including a cutoff with a top and a bottom. A line between the top and bottom of each cutoff is not parallel to the axis of the impeller.

Fan housing for reduced noise

Growing community of inventors

Corvalis, OR, United States of America

Gunay Ozturk