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. 23, 1982
Filed:
Feb. 01, 1979
Tsutomu Itoh, Tokyo, JP;
Onoda Cement Co., Ltd., Yamaguchi, JP;
Abstract
This invention relates to a process for electrostatically coating a substantially axially symmetrical object with pulverized material, characterized by supporting said object maintained at a temperature below the melting point of said pulverized material in an electrostatic coating chamber having a substantially axially symmetrical shape and equipped with silent discharge plate electrodes on the inside of said chamber; feeding electrically charged pulverized material into said chamber; electrostatically coating said object with said pulverized material by the action of silent discharge from said electrodes; and removing surplus pulverized material from specific parts of said object by suction. This invention further relates to an apparatus used for electrostatically coating a substantially axially symmetrical object with pulverized synthetic resin, which comprises (i) an electrostatic coating chamber where said pulverized synthetic resin is coated on the surface of said object maintained at a temperature below the melting point of said resin; and (ii) a device for removing surplus pulverized resin from specific parts of said object by suction to electrostatically coat the desired parts only.