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:
Feb. 22, 1983
Filed:
May. 27, 1981
Takeo Takahashi, Kanagawa, JP;
Koichi Tabei, Kanagawa, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
An electrostatic sorting apparatus having a multistage sorting unit including a plurality of sorting conveyor belts on sorting plates aligned vertically within a cover housing. Each sorting conveyor belt or plate has a trough-like channel formed thereon for sorting a mixture of insulating particles and conductive particles. The particles of the mixture are subjected to repeated cycles of charging with a negative polarity, being attracted to a high voltage electrode, discharging, and dropping downwardly into sorting and recovering hoppers. Thus, the particles are vigorously elevationally moved between the sorting conveyor belt or plate and the electrode up and down and are finally collected in hoppers. The particles are accordingly uniformly agitated in the channel of the sorting conveyor belt or plate. Thus, the mixture is separated into the hopper with an enhanced quality of compost while fine foreign materials mixed therewith are removed from the compost.