ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,681, issued on Oct. 21.
"In-line filament conditioner/drier for 3D printer" was invented by Alan T. Thordsen (Placerville, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filament conditioning system or method for FDM 3D printing uses a filament tube with vent holes extending through a sidewall of the filament tube to a filament passthrough in the filament tube. A desiccant barrier contains the filament tube and includes vent holes through a sidewall of the desiccant barrier, and a cover contains the desiccant barrier and a desiccant in a space between the cover and the desiccant barrier. A heating element and temperature sensor may adjacent...