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:
Oct. 22, 2002
Filed:
Jan. 18, 2001
Hidehiko Maehata, Osaka, JP;
Tetsuya Inoue, Osaka, JP;
Hiroyuki Daiku, Osaka, JP;
Masanori Tsukahara, Osaka, JP;
Daisuke Tamakoshi, Osaka, JP;
Hitachi Zosen Corporation, , JP;
Abstract
A device for electrostatically separating different kinds of crushed plastic pieces and correctly sorting them according to kind. The device has a classifying section ( ) for classifying plastic pieces according to size, a frictional charging device ( ), a pair of drum type electrostatic separating devices ( ), and collecting sections ( ) disposed below the electrostatic separating devices. Partition walls ( ) for partitioning the collecting sections are constructed to be horizontally movable according to the fall positions associated with the polarity and amount of electric charge of each plastic piece ( ). Therefore, separation can be correctly effected without changing the voltage from a high voltage power source device ( ).