Kyocera Corporation

Japan Agency for Marine-earth Science and Technology

Masao Yoshida

Kenichi Asakawa

Hiroyuki Arima

Tadahiro Hyakudome

Naoyuki Ookubo

Yosaku Maeda

Suehiro Imaizumi

There are provided a shell of a pressure-resistant container that is made of ceramics, is used for a pressure-resistant container formed with a through hole, and can be made higher in strength and lighter in weight, as well as to provide a pressure-resistant container and an exploratory apparatus. A shell of a pressure-resistant container includes a shell portion and a thick-walled portion. The shell portion is made of ceramics and has a convexly-curved surface. The thick-walled portion is made of ceramics, continues into the shell portion, is larger in thickness than the shell portion, and has a through hole penetrating through the thick-walled portion in a thickness direction thereof.

Shell of pressure-resistant container, pressure-resistant container, and exploratory apparatus

There are provide a pressure-resistant container which is less likely to be damaged due to stress concentration even in deep seas of 1000 m or deeper below sea level, and an exploration machine provided with the same. A pressure-resistant container includes a cylindrical first outer shell member; and substantially hemispherical second outer shell members which are respectively connected to both ends of the first outer shell member, and is constructed by selecting materials so that a Young's modulus E2 of a base material which constitutes the second outer shell members is smaller than a Young's modulus E1 of a base material which constitutes the first outer shell member.

Pressure-resistant container and exploration machine provided with the same

The protrusionis formed on one end face of the ceramic member, and the positive electrode lead-out sectionwhich is electrically connected to the heat generating memberis drawn out and exposed on the side face of the protrusionat several positions, while the terminalof the positive electrode lead-out fixture can be connected to each of the exposed portions.

Ceramic heater, and glow plug using the same

In order to achieve concentric distribution of temperatures over a wafer supporting surface and improve the uniformity of heating, a heating resistor 4 having a configuration for providing a predetermined heater pattern buried in a ceramic substrate 2 constituting a wafer heating apparatus is made from arc portions 4a-4g which have different radii and are arranged to form concentric circles disposed at substantially the same intervals and straight portions 4h-4m which connect those of the arc portions 4a-4g that are adjacent to each other in the radial direction thereby to form a series circuit, while the arc portions 4a-4g and the straight portions 4h-4m are made in substantially the same strip width and the distance L1 between a pair of straight portions among the straight portions 4h-4m which are located on the same circle is made less than the distance L2 between the arc portions which are adjacent to each other in the radial direction.

Growing community of inventors

Kirishima, Japan

Masao Yoshida