Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-10-31
2006-10-31
Urban, Edward F. (Department: 2618)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C239S102100, C239S102200, C239S101000, C239S338000, C239S337000, C128S200120, C128S200140, C128S200160
Reexamination Certificate
active
07129619
ABSTRACT:
An ultrasonic nebulizer for producing high-volume sub-micron droplets is disclosed. The ultrasonic nebulizer utilizes a 3 or 5 MHz frequency as an oscillation frequency for producing sub-micron droplets. The nebulizer can also use at least one piezoelectric ceramic oscillator for increasing the volume of the droplets. The ultrasonic nebulizer comprises an ac/dc converter, an oscillator circuit, an amplifying device, a nebulization chamber, and at least one piezoelectric ceramic oscillator. The ac/dc converter rectifies an ac current to a dc current. The oscillator circuit produces an oscillation signal with a frequency larger than or equal to 3 MHz. The amplifying device amplifies the oscillation signal. The nebulization chamber has a lower face for holding a liquid to be nebulized. At least one piezoelectric ceramic oscillator is formed on the lower face of the nebulization chamber and connected to the amplified signal providing an ultrasonic output to cause nebulization for producing high-volume sub-micron droplets.
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Chang Hsiu-Kang
Hsieh Tiao-Ling
Tsai Kun-Yi
Yang Che-Hua
Bacon & Thomas PLLC
Chow Charles
Purzer Pharmaceutical Co., Ltd.
Urban Edward F.
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