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:
Jun. 24, 2003
Filed:
Sep. 28, 2001
Shoji Fujii, Shizuoka, JP;
Yoshio Fujikawa, Shizuoka, JP;
NTN Corporation, Osaka, JP;
Abstract
A spindle for an electrostatic painting machine has a main spindle and a rotor coupled to the rear end of the main spindle. The main spindle and the rotor are rotatably supported through bearing gaps of externally pressurized gas bearing portions, and a paint spray head is mounted to one end of the main spindle. A current-carrying member having conductivity with the housing is brought into contact with the main spindle and floated off it via a small gap due to dynamic pressure produced by the rotation of the main spindle. With this arrangement, it is ensured that discharge occurs at gaps of externally pressurized gas bearing portions, sputtering is suppressed, and the life of the spindle is prolonged.