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. 03, 2007
Filed:
Nov. 05, 2002
Tadao Morita, Tokyo, JP;
Hiroki Murai, Tokyo, JP;
Kosei Yabe, Tokyo, JP;
Akira Nakamura, Tokyo, JP;
Nihon Parkerizing Co., Ltd., Tokyo, JP;
Abstract
In a powder coating apparatus a pulse signal Sof a low voltage generated by a pulse signal generation circuit () is boosted to a high voltage by means of a high voltage impression circuit (), so that it is impressed upon corona electrodes (). As a result, a corona discharge is intermittently generated from the corona electrodes () toward an object to be coated, whereby powder coating material sprayed from a nozzle opening of a gun main body in a forward direction is charged with negative ions developed by the corona discharge, whereafter it is directed toward the object to be coated, and is deposited on a surface of the object.