Piezoelectric driven control valve

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8162286
APP PUB NO 20100127196A1
SERIAL NO

12593580

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Stable flow control is made possible even under high-temperature environments by relieving tensional force applied to a piezoelectric element when a piezoelectric actuator is retracted. Thus, a piezoelectric driven control valve includes: a body having a valve seat; a metal diaphragm to contact with and separate from the valve seat; an actuator box supported ascendably and descendably on the body; a split base fixed to the body; a disc spring pressing and urging the actuator box downward to bring the metal diaphragm into contact with the valve seat; and a piezoelectric actuator housed inside the actuator box and that extends upward with application of voltage to press the actuator box upward against the elastic force of the disc spring, and a precompression mechanism, for applying a compression force constantly to piezoelectric elements in the piezoelectric actuator, provided between the split base and the piezoelectric actuator.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJIKIN INCORPORATEDOSAKA, JP202

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dohi, Ryosuke Osaka, JP 14 230
Hirata, Kaoru Osaka, JP 36 117
Ikeda, Nobukazu Osaka, JP 174 1444
Nishino, Kouji Osaka, JP 94 488
Sawada, Yohei Osaka, JP 12 15

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ROBERT BOSCH GMBH (1)
6776390 Valve for controlling fluids 8 2002
 
CONTINENTAL AUTOMOTIVE GMBH (1)
* 6062533 Apparatus and method for valve control 46 1999
 
SMC CORPORATION (1)
* 6345803 Piezoelectric fluid control valve 5 2001
 
HITACHI METALS, LTD. (1)
* 5470045 Solenoid-actuated diaphragm valve with biased disc spring 9 1994
 
SMC KABUSHIKI KAISHA (1)
* 6520479 Flow rate control valve 14 2000
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
VIKING AT, LLC (1)
* 2014/0109,995 Mass Flow Controller Driven by Smart Material Actuator with Mechanical Amplification 0 2012
* Cited By Examiner

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