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. 25, 2015
Filed:
Apr. 16, 2013
Satake Corporation, Tokyo, JP;
Mechano Transformer Corporation, Kawasaki-shi, Kanagawa, JP;
Takafumi Ito, Hiroshima, JP;
Teruhiko Takeuchi, Hiroshima, JP;
Tadashi Matsushita, Hiroshima, JP;
Sze Keat Chee, Kawasaki, JP;
Takeshi Yano, Kawasaki, JP;
Takeshi Kamima, Asahi, JP;
Toshiro Higuchi, Tokyo, JP;
SATAKE CORPORATION, Tokyo, JP;
MECHANO TRANSFORMER CORPORATION, Tokyo, JP;
Abstract
A piezoelectric valve stably supplies gas even for a long gas ejection time, with a high responsivity to opening the valve, is provided. The piezoelectric valve, including a gas-pressure-chamber for receiving a compressed gas supplied from outside, a gas-discharge-channel through which the compressed gas is discharged from the gas-pressure-chamber, comprises: a valve body disposed in the gas-pressure-chamber and opens/closes the gas-discharge-channel; a piezoelectric element for producing a driving force to move the valve body as a displacement; a displacement-enlarging-mechanism for enlarging the displacement of the piezoelectric element to act on the valve body; and a driving unit having a signal-generating-unit for generating a signal comprising a pre-pulse and a main pulse and provides the signal generated by the signal-generating-unit to a driving circuit as an input signal to apply a driving voltage to the piezoelectric element to make the piezoelectric element expand and drive the valve body open.