Ngk Insulators, Inc.

Takao Nakamura

Tsutomu Moriya

Yasunori Matsuura

Yukio Torii

A hollow porcelain insulator including an elastic insulating layer having a tensile strength of at least 150 kg/cm.sup.2 and a thickness of at least 2 mm for improving an explosion preventing property.

Explosion preventing porcelain hollow insulator

Thermal shock resistant ceramic honeycomb structures in which the shape of the vertical cross-section of the honeycomb structure is elliptical, and the shape of the channels is quadrilateral, one group of the partitions of the channels being inclined against the long diameter direction of the ellipse-shaped honeycomb structure and another group of the partitions of the channels being parallel to or inclined against the short diameter direction, the two groups of partitions are being crossed to form the quadrilateral channels.

Growing community of inventors

Iwakura, Japan

Takao Nakamura