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:
Oct. 05, 2021
Filed:
Nov. 21, 2017
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Akihiro Satake, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/00 (2006.01); B01D 46/24 (2006.01); D21F 9/00 (2006.01);
U.S. Cl.
CPC ...
B01D 46/0068 (2013.01); B01D 46/2411 (2013.01); D21F 9/00 (2013.01);
Abstract
A dust collecting device includes a cylindrical filter, a backwash auxiliary member that is disposed at an end portion of the filter and of which at least a part is disposed in a cylinder of the filter, and an air current generation unit that generates a backwash air current that passes through the backwash auxiliary member and flows into the cylinder of the filter, in which the backwash auxiliary member includes a rectification unit that extends spirally in an axial direction of a center axis of the filter.