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:
May. 03, 2022
Filed:
Apr. 10, 2019
Toshiba Lifestyle Products & Services Corporation, Kawasaki, JP;
Nobuhide Okitsu, Kanagawa, JP;
Akiyoshi Tanaka, Kanagawa, JP;
Kiyoshi Ebe, Kanagawa, JP;
Fumiki Mano, Kanagawa, JP;
Mai Oikawa, Kanagawa, JP;
Satoshi Ohshita, Kanagawa, JP;
TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION, Kawasaki, JP;
Abstract
A dust-collecting device includes a cylindrical casing and an insertion part. The casing includes an introduction port introducing dust-containing air. The insertion part is positioned inside the casing to allow a swirling flow of the dust-containing air to be formed between the insertion part and the casing. The insertion part includes a cylindrical side surface part spaced away from and facing the casing and a projection part. The projection part includes, in a side of the first dust-collecting part, a projection surface projecting outward from the side surface part. The projection surface includes plural straightening parts and a connection part. The straightening parts are formed spirally toward the side of the first dust-collecting part, from upstream to downstream sides of the swirling flow. The connection part connects a downstream end side of one of the straightening parts and an upstream end side of another one of the straightening parts.