Invention Grant
- Patent Title: Electric vacuum cleaning apparatus
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Application No.: US16624014Application Date: 2018-06-22
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Publication No.: US11406236B2Publication Date: 2022-08-09
- Inventor: Masatoshi Tanaka , Satoshi Goto , Yukio Machida
- Applicant: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
- Applicant Address: JP Kawasaki
- Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
- Current Assignee: TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION
- Current Assignee Address: JP Kawasaki
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPJP2017-123258 20170623
- International Application: PCT/JP2018/023754 WO 20180622
- International Announcement: WO2018/235932 WO 20181227
- Main IPC: A47L9/10
- IPC: A47L9/10 ; A47L9/28

Abstract:
An electric vacuum cleaning apparatus includes a station and an electric vacuum cleaner connectable/disconnectable from the station. The electric vacuum cleaner includes: a coarse-dust collecting chamber that accumulates coarse dust separated with a first separator; a filter chamber that accumulates fine dust separated with a filter; a coarse-dust waste-outlet that discharges the coarse dust from the coarse-dust collecting chamber; a fine-dust waste-outlet adjacent to the coarse-dust waste-outlet and discharges the fine dust from the filter chamber; and a waste-outlet lid that opens/closes both the coarse-dust waste-outlet and fine-dust waste-outlet together. The station includes: a secondary dust container accumulating coarse dust to be discharged from a primary dust container through the coarse-dust waste-outlet port and fine dust to be discharged from the primary dust container through the fine-dust waste-outlet; and a secondary electromotive blower that applies negative pressure to the primary dust container to transfer the coarse and fine dust.
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