Hitachi, Ltd.

Sumida Corporation

Washi Kosan Co., Ltd.

Masahiko Ono

Yoshishige Endo

Hiromitsu Kawamura

Takao Kawamura

Takeshi Araya

Katsumi Kobara

Toshihiro Yamada

Makoto Hirose

Daisuke Ebisawa

Hisashi Urasaki

Masahiro Miyazaki

Toshiaki Kawabata

Hiroshi Matsumoto

Yoshifumi Tomita

Noriyuki Shige

Kenji Sumida

Yoshihiro Moriguchi

Tatsumi Nishino

Kazunori Kagei

Yoshishige Endou

Tomonaga Oyamada

Kazuhiro Fujise

Disclosed is an abrasion resistant material having low cost and excellent abrasion resistance, a puffer cylinder, and a puffer type gas circuit breaker. The abrasion resistant material includes: a base material which is formed of pure aluminum or aluminum alloy and has an unevenness structure formed on its surface; and an aluminum hydrated oxide film which is formed on the surface of the base material, wherein a surface of the aluminum hydrated oxide film is provided with an unevenness structure which is finer than the unevenness structure of the base material.

Abrasion resistant material, puffer cylinder, and puffer type gas circuit breaker

The present invention includes a wear-resistant material including: a base material formed of pure aluminum or an aluminum alloy having a projection, and a depression in a pit-like shape on a surface thereof; and a coat including a dehydrate of a hydrated oxide of aluminum, the coat being formed on a surface of the base material. Further, the present invention including a method for producing a wear-resistant material including the steps of: forming a hydrated oxide coat of aluminum on a surface of the base material by a chemical conversion coating; and heating the hydrated oxide coat. Further, the present invention also includes a puffer cylinder and a puffer-type gas circuit breaker applied to the above wear-resistant material.

Wear-resistant material, method for producing the same, puffer cylinder and puffer-type gas circuit breaker

The present invention includes a wear-resistant material including: a base material formed of pure aluminum or an aluminum alloy having a finely asperity structure on a surface thereof; and a coat including a hydrated oxide coat of aluminum, the coat being formed on the surface of the base material. Further, the present invention including a puffer cylinder including: a finely asperity structure on an inner-wall surface thereof; and a coat including a hydrated oxide coat of aluminum, the coat being formed on the inner-wall surface of the puffer cylinder. The present invention also includes a puffer-type gas circuit breaker includes the above puffer cylinder.

Wear-resistant material, puffer cylinder, and puffer-type gas circuit breaker

A slide bearing device and a compressor are capable of stably achieving a low friction condition from the early stage of the start of friction. The slide bearing device includes a bearing, a shaft supported by the bearing while being subjected to sliding, and a gas supply section for supplying a dry gas to a bearing slide section where the bearing and the shaft slide against each other. A slide surface of the bearing is formed of a resin composite material, which is a mixture of a carbon material and a resin. The shaft is made of a metal and includes a groove formed on a slide surface of the shaft, the groove extending in a direction different from the sliding direction. Plural grooves may be provided and the grooves may extend in arbitrary directions. The shaft may include a collection of plural recesses on the slide surface thereof.

Slide bearing device and compressor

A magnetic element may include a first core member, a second core member facing the first core member along an entire outer periphery thereof, a coil, and a base shaped body on which the first core member and the second core member are placed. The base shaped body is provided with a base member and a terminal member, and the terminal member is provided with a binding terminal part, which projects outward in a first corner part of the base member and projects from the base member on a side lower than a portion of a winding frame part side of one flange part. The second core member is provided with a cutout part at a portion corresponding to the first corner part of the base member for allowing insertion of an end drawn out from the winding frame part in a state of not contacting the second core member.

Magnetic element

In order to provide a magnetic disk apparatus and a magnetic disk which is excellent in reliability and durability, and which enables high density recording, respectively, this invention provides a method for forming fine concave and convex portions (uneven area) on the magnetic disk by coating masking material particles only in the CSS area on the magnetic disk, etching the magnetic disk, and removing the masking material particles.

Magnetic disk having CSS area with concave and convex portions and

Disclosed are an ultrafine particle film which is effective for the prevention of an electrostatic charge and reflection and can be applied to a large area at a low cost, a cathode ray tube to which the ultrafine particle film is applied, and image display plate to which the ultrafine particles is applied, and a process for producing the ultrafine particle film which comprises attaching a coating solution bath to a Braun tube surface and the like, introducing a containing solution containing anti-reflection SiO.sub.2 ultrafine particles and antistatic SnO.sub.2 ultrafine particles, and elevating up or down on the Braun tube surface and the like at a constant rate.

Transparent plate, process for the production thereof and their applied

An ultrafine particle film which has excellent anti-staining properties, is effective for the prevention of electrostatic charge and reflection of visible light and can be applied to a large area at low cost, and an image display plate such as the one adapted to a Braun tube to which the ultrafine particle film is applied, and a process for producing the ultrafine particle film which comprises attaching a coating solution bath 22 to a surface of a Braun tube 21, filling the bath with a coating solution 23 containing antistatic SnO.sub.2 ultrafine particles so that the surface of the Braun tube 21 is covered with the coating solution, exposing the coated Braun tube surface at a predetermined rate to form an electrically conductive film on the Braun tube surface, the above process being repeated by using a coating solution containing the visible light anti-reflection ultrafine particles to form a visible light anti-reflection film on the electrically conductive film, and further applying thereon a water repellency treatment.

Ultrafine particle film, process for producing the same, transparent

A transparent article made of a resin and having on its surface the fine unevenness formed by direct transfer of ultrafine particles. An unevenness transfer substrate having the ultrafine particles deposited thereon as a monolayer by using a binder, with a water/oil repellent film formed on the ultrafine particle layer, is placed in a mold, then a sufficiently deaerated fluid plastic resin is cast into the mold and heated to cause curing, then the mold is removed, and the unevenness transfer substrate and the cured resin are separated from each other. Consequently, the fine unevenness formed by the ultrafine particles is transferred to the resin surface.

Transparent article and process for producing the same

An ultrafine particle film which is effective for the prevention of electrostatic charge and reflection of visible light and can be applied to a large area at low cost, an image display plate such as the one adapted to a Braun tube to which the ultrafine particle film is applied, and a process for producing the ultrafine particle film which comprises attaching a coating solution bath 22 to a surface of a Braun tube 21, filling the bath with a coating solution 23 containing the antistatic SnO.sub.2 ultrafine particles so that the surface of the Braun tube 21 is covered with the coating solution, and then exposing the coated Braun tube surface at a predetermined rate to form an electrically conductive film on the Braun tube surface, the above process being repeated by using a coating solution containing the visible light anti-reflection ultrafine particles to form a visible light anti-reflection film on the electrically conductive film.

Process for forming ultrafine particle film, transparent plate and image

The present invention relates to an ultrafine particle film which is effective for the prevention of electrostatic charge and reflection of visible light and can be applied to a large area, and a process for producing an image display plate to which the ultrafine particle film is applied. This process comprises attaching an object to be coated to a coating solution bath, filling the coating solution bath with a coating solution containing ultrafine particles with a high refractive index, and then exposing the object to be coated, to form an electrically conductive film, the above procedure being repeated by the use of a coating solution containing ultrafine particles with a low refractive index to form a visible light anti-reflection film.

Process for formation of an ultra fine particle film

An ultrafine particle film which is effective for the prevention of an electrostatic charge and reflection and can be applied to a large area at a low cost, a cathode ray tube to which the ultrafine particle film is applied, and image display plate to which the ultrafine particles is applied, and a process for producing the ultrafine particle film which comprises attaching a coating solution bath to a Braun tube surface and the like, introducing a containing solution containing anti-reflection SiO.sub.2 ultrafine particles and antistatic SnO.sub.2 ultrafine particles, and elevating up or down on the Braun tube surface and the like at a constant rate.

Ultra fine particles having uneven surfaces and treatment plate using

Ultrafine particles of a composite particulate substance composed of two or more types of inorganic oxides, forming a particle structure in which two or more types of inorganic oxides are mutually mixed or an inorganic oxide of one type is contained in an inorganic oxide of another type, and having an average particle diameter of not more than 0.1 .mu.m, a process for the production of the ultrafine particles, use of the ultrafine particles as a thin film, particularly in an image display face plate and a cathode ray tube, and a process for using the ultrafine particles therefor.

Ultrafine particles, their production process and their use

Ultrafine particles of a composite particulate substance composed of two or more types of inorganic oxides, forming a particle structure in which two or more types of inorganic oxides are mutually mixed or an inorganic oxide of one type is contained in an organic oxide of another type, and having an average particle diameter of not more than 0.1 .mu.m, a process for the production of the ultrafine particles, use of the ultrafine particles as a thin film, particularly in an image display face plate and a cathode ray tube, and a process for using the ultrafine particles therefor.

Growing community of inventors

Ibaraki-ken, Japan

Masahiko Ono