Kabushiki Kaisha Toshiba

Nippon Athletic Industry Company

Mitsuo Komuro

Mika Tahara

Yoshika Mitsunaka

Masashi Tanabe

Yosuke Hirata

Tomohisa Kurita

Noriyuki Katagiri

A core catcher includes a holding surface that catches and holds corium and that introduces a surrounding coolant into the core catcher and cool the core catcher by heat exchange with the introduced coolant. The holding surface and the cooling unit are constructed by arranging blocks which each include a polyhedron having at least one pair of parallel surfaces and having an opening portion formed in a surface located in a lateral direction when a first surface that is one of the parallel surfaces is arranged as a bottom surface and are configured such that the polyhedrons communicate with each other via the opening portion when the polyhedrons are arranged adjacent in the lateral direction. The core catcher can achieve easier installation of the blocks without an increase in installation cost.

Core catcher

An electron beam generated by an electron gun is oscillated in a cavity resonator and output as a millimeter electromagnetic wave. The output electromagnetic wave is transmitted to a cylindrical mode converter. The inner wall surface of this mode converter has a plurality of sets of ridges and grooves spirally formed at equal pitches so as to gradually change the degree of corrugation in the transmission direction of the electromagnetic wave. The mode converter separates the input electromagnetic wave from the cavity resonator into a plurality of electromagnetic waves having the same power distribution. The output electromagnetic waves from the mode converter are transformed into wave beams by mirror systems and output to the outside of a gyrotron from output windows provided in a one-to-one correspondence with these electromagnetic waves.

Gyrotron capable of outputting a plurality of wave beams of

A health pillow having both magnetic effect and manual pressure effect and further having good air permeability, which comprises a hollow pillow body consisting of a foamed synthetic resin; a large number of permanent magnets distributedly arranged on the upper surface of the pillow body; and a cover material covering the pillow body and the permanent magnets. The said hollow pillow body has a large number of projections, which consist of the foamed synthetic resin itself and are distributedly arranged on its upper surface such that each permanent magnet is arranged between the projections, and further has a large number of projections consisting of the foamed resin itself distributedly arranged on its bottom surface. The hollow pillow body further has vent holes distributedly formed so as to communicate the outside of the hollow pillow body with the hollow portion formed inside the body.

Magnetic pillow

A magnetic sleeping mat having a magnetic effect and a manual pressure effect; comprising a foamed synthetic resin board having large projection formed on its upper surface and further having small projections on its upper surface and bottom surface; a first fibrous sheet having holes and superposed on the upper surface of the foamed synthetic resin board so as to be fitted in its holes with the large projections of the foamed synthetic resin board and to be contacted with the small projections of the board; a second fibrous sheet having holes and superposed on the upper surface of the first fibrous sheet so as to be fitted in its holes with the large projections of the board; permanent magnets arranged on the second fibrous sheet; and a cover cloth which covers the laminated assembly consisting of the foamed synthetic resin board, the first fibrous sheet and the second fibrous sheet containing the permanent magnets.

Growing community of inventors

Tokyo, Japan

Mitsuo Komuro