Olympus Optical Company, Ltd.

Denken Co., Ltd.

Kyocera Corporation

Kabushiki Kaisha Denken

Toshio Shimizu

Kazuhiro Watanabe

Yasuharu Hakamatsuka

Mamoru Aihara

Sumiya Hobo

Masaru Nishida

Crystallization furnace for dental prostheses

Casting machine for dental prostheses

A centrifugal casting device adapted to mold and cast a casting material melted by a casting material melting means, by the centrifugal force of a rotary arm, in a mold disposed on the centrifugal side of the arm through a casting crucible disposed at one end of the arm, in which device the melting means is designed to move outside the path of rotation of the arm at least when the arm is rotated so as to reduce the force of rotation of the arm to thereby increase efficiency of casting. And also a centrifugal casting device having the above features in which device the righting reaction of a charged compression spring is used as the driving force of the rotary arm and further included a clutch member and sensors so that the rotary arm stops as soon as possible at the end of casting and returns automatically to its normal position after stopping so as to be ready for the next step of casting and so as to automatically keep the force of rotation of the arm invariably constant.

Centrifugal casting device

A melting and pressure casting device characterized in that it comprises a cylindrical electric heating means set in a closed chamber reducible and increasable in gas pressure, a vertically long crucible set in the heating means, a mold provided below the crucible and connected thereto, and an upper sprue communicating between the lower portion of the pouring cup and the sprue formed in the mold, wherein the melt for casting is held by its surface tension in the pouring cup and the melt thus held is poured under pressure by pressurizing the chamber into the mold through the upper sprue to thereby make a casting.

Melting and pressure casting device

Growing community of inventors

Kyoto, Japan

Toshio Shimizu