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:
Mar. 04, 2014
Filed:
May. 13, 2011
Takafumi Ito, Tokyo, JP;
Teruhiko Takeuchi, Tokyo, JP;
Takeshi Yano, Kawasaki, JP;
Sze Keat Chee, Kawasaki, JP;
Toshiro Higuchi, Tokyo, JP;
Takafumi Ito, Tokyo, JP;
Teruhiko Takeuchi, Tokyo, JP;
Takeshi Yano, Kawasaki, JP;
Sze Keat Chee, Kawasaki, JP;
Toshiro Higuchi, Tokyo, JP;
Satake Corporation, Tokyo, JP;
Mechano Transformer Corporation, Kanagawa, JP;
Abstract
A piezoelectric valve comprising: a valve main body formed in which are a gas pressure chamber that takes in compressed gas supplied from the outside as well as a gas release channel through which the compressed gas is released from the gas pressure chamber; a valve body placed in the gas pressure chamber to open and close the gas release channel; a piezoelectric element that generates, in the form of displacement, a driving force needed to operate the valve body; at least one displacement amplification mechanism that amplifies a displacement of the piezoelectric element and causes it to act upon the valve body; and a driving means for applying voltage to the piezoelectric element in order to drive the valve body to open the valve and thereby open the gas release channel; wherein such piezoelectric valve is characterized in that the driving means applies voltage to the piezoelectric element in multiple stages so as to suppress fluctuation in the amount of gas ejected from the gas release channel when the valve opens.