Jfe Steel Corporation

The Yoshida Dental Mfg. Co., Ltd.

Kazuaki Hara

Koji Iwata

Terumi Takemoto

Hiroshi Horiuchi

Shigeru Shoji

Yukimasa Horikawa

Shigeo Tamura

Hiromichi Fujiwara

Provided is a surface combustion burner which solves the passage blocking in a combustion part caused by dust, and enables stable combustion for a long term. The surface combustion burner comprises: a nozzle configured to discharge fuel gas and air for combustion; and a laminate, provided on a tip of the nozzle, in which a plurality of mesh plates is laminated, wherein the laminate includes a portion having an offset arrangement between at least any adjacent ones of the mesh plates.

Surface combustion burner, composite burner, and ignition device for sintering machine

A heat exchanger includes a hollow heat exchanger main body that is enclosed in a radiant tube, and a heat conductor that is disposed on outer periphery of the heat exchanger main body. The heat exchanger performs heat exchange between a first gas flowing in between the radiant tube and the heat exchanger main body and a second gas flowing in hollow interior of the heat exchanger main body, and the heat exchanger comprises a turbulence flow generation promoting unit configured to promote generation of a turbulence flow from the first gas flowing in between the radiant tube and the heat exchanger main body, the turbulence flow generation promoting unit being disposed on the outer periphery of the heat exchanger main body without welding.

Heat exchanger, radiant tube type heating device, and method of manufacturing heat exchanger

Cylindrical support having dope prism built therein is rotatably fitted in barrel as a constituent of stomatocamera frame . The support has pin erected on its periphery, and the barrel is furnished with guide channel formed along its circumference. The pin pierces the guide channel and protrudes from the periphery of the barrel . Protrudent end of the pin is locked to locking channel of operating ring fitted to the periphery of the barrel . The dope prism built in the camera frame is rotated by revolving the operating ring . Thus, the image can be rotated without the need to revolve the CCD camera frame.

Image rotating device of stomatocamera

A laser cutting apparatus is disclosed which includes a laser emitter capable of outputting a laser beam in pulses, a laser beam irradiation member, and a dental-crown polishing and washing member. The dental-crown polishing and washing member has an injection member through which air, water and polishing material are output toward a laser-beam-irradiated surface. A control member is provided which is capable of controlling the operation of laser emitter and dental-crown polishing and washing member. The laser beam irradiation member and injection member are combined with each other by means of an adapter disposed therebetween, thereby enabling both of laser beam irradiation member and injection member to be held and operated by a single hand. By employing this laser cutting apparatus, a high-energy laser beam can be used in the medical and dental fields for removing soft dentin to form a cavity. This apparatus does not have problems due to irradiation of a high-energy laser beam, such as the production and residue of a carbonized layer in the dentin, formation of a fused layer in the dentin, occurrence of a cavity margin having an irregular configuration, and cracking and damaging of the dental pulp attributed to a temperature rise.

Growing community of inventors

Tokyo, Japan

Kazuaki Hara