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:
Nov. 23, 2004
Filed:
Nov. 18, 2002
Applicant:
Inventor:
Takao Miyazaki, Saitama, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03C 3/30 ;
U.S. Cl.
CPC ...
B03C 3/30 ;
Abstract
A dust collector for collecting fine dust in air and for cleaning the air is provided. A first friction disk is produced from a first substance. A second friction disk is produced from a second substance that is chargeable triboelectrically in a polarity different from a polarity of the first substance. The first and second friction disks frictionally contact one another. The second friction disk moves relative to the first friction disk, to generate electrostatic charge and thereby attract fine dust.