Handheld vacuum cleaner

US11432690B2 · kind B2 · utility

Assignee

• Techtronic Industries Co. Ltd. · CN

Inventors

• Kirti Kant Paulla · Howard, US
• John Bohlen · Ossian, US
• Richard Friend · Sydney, AU
• Joseph Saunders · Wadsworth, US
• Sergey V. Makarov · Solon, US

Key dates

• Filing date: Feb 11, 2020
• Grant date: Sep 6, 2022
• Expiry date: Oct 1, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04C2009/002
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A handheld vacuum cleaner including a fluid flow path, a main body including a handle, a fluid flow motor positioned in the fluid flow path, a dirt collection region, and a cyclone chamber in the fluid flow path. The cyclone chamber includes a first end wall, a second end wall, a sidewall extending along a cyclone axis, a cyclone dirt outlet formed in the sidewall, a cyclone dirty fluid inlet, and a cyclone clean fluid outlet. A duct extends between the cyclone dirt outlet and the dirt collection region. The duct includes an upstream wall and a downstream flow-diverting wall forming a downstream boundary of the cyclone dirt outlet. The duct widens between the upstream wall and the downstream flow-diverting wall in a downstream direction away from the cyclone dirt outlet.