Mitsubishi Jukogyo Kabushiki Kaisha

Yasuyuki Maehara

Takijiro Shimamoto

Eizo Ide

Hiroyuki Shimada

Toshio Hanano

Naofumi Murao

Toshihiko Maeda

Akira Mizokami

Toshimasa Okabe

Tetsuo Horie

Hirohisa Tomikawa

Masanori Shuku

Kitoshi Hashimoto

Kazuyoshi Mori

An information transmission method using arc and apparatus thereof are applied to a loudspeaker and the like having the function of illumination. The information transmission method is characterized in that arc current supplied to an arc generating device is modulated by a signal based on information to vibrate arc column so that at least one of audible waves, ultrasonic waves and arc light is employed to transmit the information. Arc having small mechanical inertia is employed as a sound producing device and accordingly can be used as a loudspeaker having a good frequency characteristic and large output. It can be used as a sound producing device having the function of illumination by utilizing strong light emitted from arc column.

Method and apparatus for transmitting information using arc

A floating liquid-storage tank has side walls of double-hull construction for storing a liquid lighter in specific gravity than water. The double-hull side walls consist of inner and outer hull sections and have watertight partition plates for dividing the hollows of the side walls into upper and lower ballast tanks. The outer hull sections of the upper ballast tanks are built to be resistant to the external water pressure and those of the lower ballast tanks are non-pressure-resistant. Holes through which the water outside can enter the lower ballast tanks are made in the outer hull sections of the lower ballast tanks. The partition plates are horizontally located at or slightly below the level of the intersection of the liquid-pressure distribution line and the external-water-pressure distribution line in the direction of depth of the storage tank in the full loaded condition. The bottom wall of the storage tank has a bottom ballast tank formed integrally with the lower ballast tanks, and the outer hull section of the bottom wall is built to be non-pressure-resistant.

Floating liquid-storage tank having side walls of double-hull

Growing community of inventors

Akunoura, Japan

Yasuyuki Maehara