The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 1992
Filed:
Dec. 04, 1989
Toshio Saito, Tokyo, JP;
Saito Kohki Co., Ltd., Tokyo, JP;
Abstract
The present invention is characterized by applying high positive and negative DC voltages supplied from a converter to positive and negative discharge needles (or electrodes) arranged independent of the other in two air passages to generate positive and negative corona ions in the two air passages, by supplying air, whose flow rates and pressures in the two air passages have been adjusted, into the air passages through air hoses connected to rear ends of the air passages, and by jetting the positive and negative ions, keeping them balanced, together with air to a charged body separated a little through nozzles attached to front ends of the air passages to eliminate static electricity from the charged body. The present invention is further characterized by method and apparatus capable of achieving the above-mentioned process and having an electrodes arrangement in which an extremely fine metal line made of tungsten, for example, and having a diameter of 20-60 .mu.m is used as the corona electrodes to hold flows of the positive and negative ions balanced for a long time.