The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2022
Filed:
Mar. 26, 2020
Seiko Epson Corporation, Tokyo, JP;
Hiroki Kobayashi, Hara-mura, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A plasticizing apparatus includes a barrel that is provided with a first through-hole along a first axis, a first screw in which a first groove portion having a spiral shape about a first axis is provided in a surface facing a barrel, a side wall having a cylindrical shape is provided along an outer peripheral edge of a surface facing a side opposite to the barrel, and a second through-hole is provided along the first axis, a second screw of which at least a part is disposed inside the side wall and a second groove portion having a spiral shape about the first axis is provided in a surface facing the barrel with the first screw interposed therebetween, and a drive unit that rotates the first screw and the second screw about the first axis by making angular velocity vectors thereof different from each other with respect to the barrel.