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Article: British Inventors Develop Vacuum Cleaner Dual Filter Arrangement
- Article from:
- US Fed News Service, Including US State News
- Article date:
- October 23, 2008
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ALEXANDRIA, Va., Oct. 23 -- Eric Coburn of Coxhoe, Great Britain, Danny Bone of Langley Moor, Great Britain, and Barry Pears of Langley Moor, Great Britain, have developed an arrangement for vacuum cleaner.
An abstract of the invention, released by the U.S. Patent & Trademark Office, said: "A dual filter arrangement for a vacuum cleaner for filtering particles of dust and debris from an airflow passing through the vacuum cleaner. The dual filter comprises a coarse pre-filter having an array of pores formed therein of substantially uniform diameter and a fine primary filter which is located rearwardly of the pre-filter in the direction of flow of the airflow. The dual filter is ...