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. 29, 2004
Filed:
Jan. 22, 2003
Kohji Toda, Yokosuka, JP;
Other;
Abstract
A bridge-type ultrasonic atomizer comprises input- and output piezoelectric substrates, first- and second electrodes formed on the input piezoelectric substrate, third- and fourth electrodes formed on the output piezoelectric substrate, a porous nonmetalic-plate formed between the input- and output piezoelectric substrates. When an input electric signal is applied between the first- and second electrodes, a first acoustic vibration is excited in the input piezoelectric substrate. The first acoustic vibration makes a liquid in the porous nonmetalic-plate to be atomized, at the same time, causes a second acoustic vibration in the output piezoelectric substrate only when the liquid exists in the porous nonmetalic-plate. The second acoustic vibration is detected as a delayed electric signal between the third- and fourth electrodes, and is fed back to the first- and second electrodes again. As a result, the porous nonmetalic-plate prevents the operation without liquid.