Honda Electronics Co., Ltd.

Gc Corporation

Showa University

Katsuyuki Inagaki

Toshiaki Miyamoto

Takashi Takiguchi

Masanori Sato

Matsuo Yamamoto

Hideo Kozaka

Kenji Nagareda

Yuki Murai

Kazumasa Kubota

Kengo Uemura

Tomomi Hikida

Hiromasa Tomura

Yuya Ishiguro

A flowmeter sensor can stably measure in a wide temperature range including one over 100° C. The flowmeter sensor includes an ultrasonic transducer, a pipe, and an acoustic prism. The acoustic prism has a bottom surface that is arranged in contact with the outer peripheral surface of the pipe and a front-side inclination surface that supports the ultrasonic transducer. The acoustic prism propagates ultrasonic waves from the ultrasonic transducer toward the fluid within the pipe. The pipe is made of a first heat-resistant resin having heat resistance in a temperature range of 90° C. to 200° C. and negative thermoacoustic characteristics in which the ultrasonic transmittance decreases as the temperature rises in such a temperature range. The acoustic prism is made of a second heat-resistant resin having heat resistance in the temperature range and positive thermoacoustic characteristics in which the ultrasonic transmittance increases as the temperature rises in such a temperature range.

Flowmeter sensor

Provided is a dental ultrasonic cleaning device that efficiently cleans teeth or dentures in an oral cavity using ultrasonic waves. A dental ultrasonic cleaning deviceemits ultrasonic waves through a cleaning-liquid (W) to the surface of a cleaning-target, ultrasonically cleaning it. An ultrasonic hornpropagates ultrasonic waves being generated by an ultrasonic-wave transducerand emits them from the vibratory surfaceprovided at the tip-end of the horn. A liquid-reserving partis provided, surrounding the vibratory surfaceof the ultrasonic horn, which temporarily reserves the cleaning-liquid (W) between the vibratory surfaceand the cleaning-target. A cap-memberis provided at a certain interval opposite the liquid-reserving part. A cleaning-liquid discharge-tube inletis connected to a vacuum tubewithin the cap-member, allowing the cleaning-liquid Wused during the ultrasonic cleaning to be vacuumed from the oral cavity, into the cap-member, and then discharged through the vacuum tube

Dental ultrasonic cleaning device and method for cleaning teeth or dentures by using ultrasonic waves

This invention is achieved to provide a water-flow ultrasonic oral-cavity cleaning device. In the water-flow ultrasonic oral-cavity cleaning device (), cleaning liquid (W) from a cleaning-liquid supplying device () is supplied into a transducer case () through a supply port (). Ultrasonic waves (S) are propagated into the cleaning liquid Wfrom an ultrasonic transducer () mounted in a transducer mounting part () inside the transducer case (). The water-flow of the cleaning liquid (W) is collected at the apical-part inside the transducer case (), and then emitted from the issue () into the oral cavity, wherein power supply of 100W or less is supplied to the ultrasonic transducer () of 50 mm or less in diameter to propagate the ultrasonic waves (S) of 100 kHz or more to 3 MHz or less in frequency into the cleaning liquid (W).

Flow-type ultrasonic oral cavity washing device

Growing community of inventors

Aichi, Japan

Katsuyuki Inagaki