Gc Corporation

Fdk Corporation

Honda Electronics Co., Ltd.

Showa University

Takashi Takiguchi

Toshiaki Miyamoto

Masanori Sato

Katsuyuki Inagaki

Matsuo Yamamoto

Hideo Kozaka

Satoshi Ota

Mikio Kitaoka

Masami Miyamoto

Yuko Kanazawa

Kazumasa Kubota

Kengo Uemura

Tomomi Hikida

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

A winding component includes a core that surrounds an outer circumference of a coil and end surfaces of flanges to form a closed magnetic circuit, in which notches through which end portions of the coil are drawn outward are so formed in the flanges that each of the notches extends radially inward from an outer circumferential edge of the corresponding flange, a wall that surrounds each of the notches such that the wall stands axially outward on the flange, a thick portion in a winding part in correspondence with the notches and thicker than other portions of the winding part, and a lid formed of a sidewall between an outer circumferential surface of the wall and the core and covers the outer circumferential surface of the wall and a top plate at an axially outer end of the sidewall and covers an opening in the wall.

Winding component

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

A high power inductance device enables a large ferrite magnetic core to be manufactured at low cost and with ease and improves heat radiation efficiency to reduce an increase in the temperature of the core. The inductance device has a ferrite magnetic core and a winding wire wound around the ferrite magnetic core and is mounted on a heat radiation structure through at least one of the front surfaces of the ferrite magnetic core. The ferrite magnetic core is made of a core aggregate obtained by arranging side by side a plurality of ferrite coreshaving a completely-closed magnetic path structure or a quasi-closed magnetic path structure with a magnetic gap such that an interval is placed between the ferrite cores and magnetic paths are parallel to each other. The inductance device is mounted such that at least one plane surface of the peripheral surfaces of each of the ferrite cores is brought into direct or indirect contact with the heat radiation structurewith a metal plateinserted into the interval between the ferrite cores and the common winding wirewound around all the ferrite cores.

High power inductance device

Growing community of inventors

Tokyo, Japan

Takashi Takiguchi