Patent · US Active

Filter apparatus for a surface cleaning apparatus

US11198085B2 · kind B2 · utility

11Cited by

14References

20Claims

0Family size

Assignee

Omachron Intellectual Property Inc. · CA

Inventors

Wayne Ernest Conrad · Hampton, CA
Gordon Howes · Suzhou, CN
Wenxiu Gao · Suzhou, CN

Key dates

Filing date	Aug 31, 2017
Grant date	Dec 14, 2021
Priority date	—
Expiry date	Apr 29, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2279/55
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A surface cleaning apparatus having an air flow path from a dirty air inlet to a clean air outlet and including an air treatment member, a suction motor and a filter assembly in the air flow path. The filter assembly includes at least two spaced apart physical filter elements with the upstream face of the second filter facing the downstream face of the first filter element. The filter assembly is configured to prevent air from bypassing the first physical filter media. The filter assembly includes a gap between the first filter element and the second filter element that acts as a header and reduces the flow rate of air incident on the second filter element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.