Title: Electrostatic dust filter

Abstract: An electrostatic dust filter is provided for collecting electrically-charged dust particles which are deposited on fabric filter elements in an electric field so that the particles deposit in porous layers. The dust particles are charged in a manner to provide a mixture of particles charged with opposite polarities, and adjacent filter members are maintained at opposite polarities. Unidirectional electric fields thus exist between adjacent filter elements and the dust particles deposit on one or the other filter element according to their polarity. A relatively simple structure is provided which requires no separate electrodes to maintain the electric field.

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Inventors: Penney, Gaylord W. (Pittsburgh, PA, US)

Application Number: 466131
Filing Date: 1974-05-02
Publication_date: 1976-06-29
Assignee:
Primary Class(es): 96/66
Other Classes:
US Patent Ref:

2067822	Jan, 1937	Biederman	55/131.
2701621	Feb, 1955	Sprague	55/455.
2924293	Feb, 1960	Sprague	55/136.
3154682	Oct, 1964	Hartz et al.	55/131.
3375638	Apr, 1968	Dungler	55/116.
3616606	Nov, 1971	Vincent	55/138.
3733784	May, 1973	Anderson et al.	55/379.

Other Refs: 581,530766,263739,036846,522

Sep, 1924	FR
Apr, 1934	FR
Sep, 1943	DD
Aug, 1960	UK

Primary Examiner: Lutter, Frank W.
Assistant Examiner: Lacey, David L.
Attorney: Brown, Murray, Flick & Peckham