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:
Jul. 30, 2002
Filed:
Jan. 23, 2001
Hidehiko Maehata, Osaka, JP;
Tetsuya Inoue, Osaka, JP;
Hiroaki Arai, Osaka, JP;
Masanori Tsukahara, Osaka, JP;
Daisuke Tamakoshi, Osaka, JP;
Kenichi Nagai, Osaka, JP;
Hitachi Zosen Corporation, , JP;
Abstract
The invention provides a plastic sorting method and apparatus, which, when plastic pieces comprising a plurality of types of resin plastics are agitated and frictionally charged, are able to impart the plastic pieces a necessary amount of charge or polarity for the thorough separation even if the difference in the amount of the different types of plastic pieces is large and to increase the recovery rate. If the amount of a specified type plastic pieces ( ) to be recovered is small, the agitation and the electrostatic separation is carried out after adding the specified type plastic pieces ( ) as auxiliary frictional charging material ( ) into the frictional charging device ( ), and the auxiliary frictional charging material ( ) remains in the frictional charging device ( ) and is used repeatedly.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile