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. 13, 2012
Filed:
Oct. 28, 2008
Isamu Yamasaki, Toyota, JP;
Akira Kato, Nisshin, JP;
Michio Mitsui, Yokohama, JP;
Kimiyoshi Nagai, Yokohama, JP;
Isamu Yamasaki, Toyota, JP;
Akira Kato, Nisshin, JP;
Michio Mitsui, Yokohama, JP;
Kimiyoshi Nagai, Yokohama, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Ransburg Industrial Finishing K.K., Yokohama-shi, JP;
Abstract
Intended is to enable an electrostatic coating apparatus including a plurality of needle electrodes formed in an annular shape and having a blot preventing function, to prevent the generation of a spark discharge reliably, in case an arbitrary needle electrode approaches an earth element, and to keep the intensity of a generated electrostatic field properly. A coating gun comprises a blot preventing device including a ring-shaped electrode unit having a plurality of needle electrodes protruding radially at a substantially equal spacing radially outward from an annular base member, and a high-voltage generator for applying a high voltage to the electrode unit. The needle electrodes are connected in parallel with the high-voltage generator through individual resistors, block-by-block resistors and built-in resistors.