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:
Aug. 11, 2020
Filed:
Jan. 24, 2017
Satake Corporation, Tokyo, JP;
Mechano Transformer Corporation, Tokyo, JP;
Takafumi Ito, Tokyo, JP;
Hironori Arii, Tokyo, JP;
Tadashi Matsushita, Tokyo, JP;
Sze Keat Chee, Tokyo, JP;
Takeshi Yano, Tokyo, JP;
Toshiro Higuchi, Tokyo, JP;
SATAKE CORPORATION, Chiyoda-ku, Tokyo, JP;
MECHANO TRANSFORMER CORPORATION, Chiyoda-ku, Tokyo, JP;
Abstract
A piezoelectric valve, having superior responsiveness during valve opening and capability to stabilize gas supply at an early stage, includes a gas pressure chamber receiving compressed gas and an exhaust path discharging the compressed gas from the gas pressure chamber; a valve disc placed in the gas pressure chamber to open and close the exhaust path; a piezoelectric element generating a driving force for operation of the valve disc, as a displacement; a displacement magnifying mechanism magnifying the displacement of the piezoelectric element and applying the magnified displacement to the valve disc; and driving means including a signal generator generating a signal including a first prepulse, a second prepulse, and a main pulse, applies a drive voltage to the piezoelectric element using the signal generated by the signal generator, as an input signal to a drive circuit, and drives and opens the valve disc by expanding the piezoelectric element.