Nisshin Steel Co., Ltd.

Nippon Steel Nisshin Co., Ltd.

Kabushiki Kaisha Toshiba

Toyota Jidosha Kabushiki Kaisha

Keiji Izumi

Yuugo Oota

Tomoyuki Nagatsu

Norimasa Miura

Katsunari Norita

Kenichi Okubo

Takeshi Shimizu

Shinichi Kamoshida

Yoshikazu Morita

Tsutomu Miyano

Hirofumi Taketsu

Toshiki Kingetsu

Motonori Kurotaki

Masaya Yamamoto

Shuichi Sugita

Tadashi Nakano

Yuichi Yagami

Masanori Matsuno

Tsuyoshi Takahashi

Kazushige Ooi

Kouta Kodama

Yoshiaki Kajikawa

Mitsuyuki Nozaki

Shuntaro Sudo

Shigeyasu Morikawa

Yasumi Ariyoshi

Keita Noguchi

Kouichiro Ueda

A metallic roof materialaccording to the present invention comprises: a front substratemade of a metal sheet, the front substratecomprising a body portionformed into a box shape; a back substratearranged on a back side of the front substrateso as to cover an opening of the body portionand a core materialfilled between the body portionand the back substratethe metallic roof materialbeing tightened to a roof base by driving at least one tightening member into the body portionwherein a top plate portionof the body portioncomprises at least one protruding ribcomprised of at least one protrusiondisposed along a side of a polygon or along a circle, and wherein the metallic roof materialis configured such that the tightening member is driven into an inner regionof the protruding rib

Metallic roof material and roofing method using same

The present invention relates to a metal roofing materialthat is arranged on an eave-side metal roofing material in an eave-ridge directionof a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substratemade of a metal sheet and including a body portionformed in a box shape; a back substratearranged on the back side of the front substrateso as to cover an opening of the body portion; a core materialfilled between the body portionand the back substrate; and at least one plate reinforcing memberthat is embedded in the core materialat a position closer to the back substratethan a top plate of the body portionor that is disposed in contact with the outer surface of the back substrate

Metal roofing material and roofing method

A body portionof a front substrateincludes first side surfacesand second side surfaces, each of the second side surfacesbeing arranged at a position protruding toward the outer side along a width directionthan the first side surfaceEach of the first side surfacesincludes a side flangeA protruding width of the side flangefrom the first side surfaceis equal to or less than a protruding width of the second side surfacefrom the first side surfaceA metal roofing memberis arranged on a roof base while abutting at least the second side surfaceagainst a second side surface of other metal roofing member.

Metal roofing material, and roofing structure and roofing method using same

A metal roofing material according to the present invention comprises: a front substratehaving a body portion, the body portionbeing comprised of a metal sheet and being formed into a box shape; a back substrate disposed on a back side of the front substrateso as to cover an opening of the body portion; a core material filled between the body portionand the back substrate, the metal roofing material being arranged side by side on a roof base together with other metal roofing materials, wherein at least one edge indicatorin the form of protrusion is provided at an edge portion of a top plateof the body portion

Metal roofing material

A metal roofing memberis disposed side by side with another metal roofing member on a roof base. The metal roofing memberhas a box-shaped front substratemade of a metal sheet, a rear substratedisposed on the rear side of the front substrate, so as to cover an opening of the front substrate, and a core materialmade from a foam resin and filled in between the front substrateand the rear substrate. The front substrateresults from forming the metal sheet into a box shape. The front substratehas a side wall portion that is continuous in the circumferential direction and is formed by performing drawing or bulging processing on the metal sheet. The front substratehas a height of 4 mm to 8 mm.

Metal roofing member, production method thereof, roofing structure and roofing method

A metal roofing memberhas a front substrate, a rear substrateand a core material. The front substrateis made of a metal sheet. In the front substrate, a box-shaped body portionand a flange portionextending from the body portionare provided. The flange portionis formed by folding back, over the rear side of the front substrate, of a metal sheetextending outwards of the body portionin a directionperpendicular to a height directionof the body portion, from a lower edge of the body portion, in such a manner that the metal sheetwraps around the rear substrate. The metal roofing memberis disposed on a roof base, with the flange portionbutting against a flange portionof another metal roofing member.

Metal roofing member, and roofing structure and roofing method using same

Roof board

A stainless steel sheet useful as a separator for a low-temperature fuel cell has the surface state that a lot of fine projections (p) stand close together around many fine pits (d) formed over a whole surface. The surface state is realized by alternating electrolytic etching in a ferric chloride solution. When the stainless steel separator is built in a fuel cell, contact resistance between the separator and a graphite electrode is kept at a lower level even in a corrosive atmosphere. Consequently, the fuel cell can be driven with high power-generating efficiency over a long term even under severely corrosive conditions without generation of massive Joule heat.

Separator for low-temperature type fuel cell and production method therefor

A stainless steel separator, which is good of corrosion-resistance and low of contact-resistance, is proposed for a fuel cell. Its surface faced to a fuel electrode is pickled, which the other surface faced to an oxidizing electrode is roughened by electrolytic etching or the like. The roughening treatment may be performed before or after pickling and passivation. The roughened surface of the stainless steel separator without pickling or passivation may be faced to the oxidizing electrode.

Stainless steel separator for low-temperature fuel cell

An Al-coated steel sheet is improved in anti-scratching property during press-working and corrosion-resistance to a stored fuel by direct formation of an alkali-soluble resin film on an Al-coated steel sheet. An alkali-soluble resin, which can be dissolved in an alkali liquid of pH 9.0 or higher, is preferably urethane or acrylic resin with an acid value of 40-90 having a carboxyl group in its molecule. Alkali metal may be substituted for 1-50% hydrogen atom of the carboxyl group. A powdery synthetic resin at a ratio of 1-25 mass % and/or powdery silica at a ratio of 1-30 mass % may be dispersed in the resin film. The resin film is preferably of 0.2-5.0 &#x3bc;m in thickness. After the Al-coated steel sheet is painted with the resin, it is shaped to upper and lower halves of a fuel tank and washed with an alkali to dissolve off the resin film. The upper and lower halves are welded together and coated with a paint at their external surfaces to fabricate a fuel tank.

Fuel tank made from aluminum coated steel sheet

A new processed steel sheet comprising of a steel base coated with a Zn or its alloy plating layer and a converted layer, which contains both of at least an insoluble or scarcely-soluble metal compound and at least a soluble metal compound. The insoluble or scarcely-soluble compound may be one or more of valve metal oxides or hydroxides, and the soluble compound may be one or more of valve metal fluorides. The converted layer may be also composed of one or more of complex compounds of Mn and Ti. The insoluble or scarcely-soluble compound acts as a barrier for insulation of a steel base from an atmosphere, while the soluble compound exhibits a self-repairing faculty to repair defective parts of the converted layer. Due to the converted layer, the processed steel sheet is remarkably improved in corrosion resistance, without the presence of chromium compounds which would put harmful influences on the environment.

Chemically processed steel sheet improved in corrosion resistance

An auto focus apparatus for a camera comprising a group of lenses which include a focus lens and a zoom lens. The auto focus apparatus also comprises a focus detector, a motor and a controller. The focus detector detects whether the camera is in focus or not. The motor drives the focus lens and zoom lens. The controller controls the motor for driving the zoom lens and the focus lens. When the focus detector does not detect a focused image through the focus lens, the zoom lens is then driven to focus the camera. A method of auto focusing comprises the step of driving a focus lens so as to obtain a focusing point. The method of auto focusing also comprises the steps of detecting whether the camera is in focus or not, and driving the zoom lens when a focusing point is not achieved by the focus lens.

Automatic focusing system for use in cameras having zooming function

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Tokyo, Japan

Keiji Izumi