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:
Oct. 19, 2021
Filed:
Nov. 28, 2017
Hitachi High-technologies Corporation, Tokyo, JP;
HITACHI HIGH-TECH CORPORATION, Tokyo, JP;
Abstract
To suppress precipitation of a cleaning solution to a vibration head of an ultrasonic cleaner. An ultrasonic cleaner includes: a cleaning tank which stores a cleaning solution; an ultrasonic transducer; and a vibration head which extends from the ultrasonic transducer toward the cleaning tank and of which a tip portion includes a cylindrical hole having a longitudinal direction aligned to a vertical direction, wherein the ultrasonic transducer is driven at a frequency at which the vibration head is vibrated resonantly, and wherein the vibration head is provided with a hydrophobic or hydrophilic coating filmwhich has an interface between an areacorresponding to a vibration antinode and area corresponding to a vibration node during the resonant vibration of the vibration head, and covers the areacorresponding to the vibration node.