Shimizu Construction Co., Ltd.

Konica Minolta, Inc.

Kawasaki Steel Corporation

Konica Minolta Advanced Layers, Inc.

Takenori Kumagai

Nobuo Kato

Masato Kawaguchi

Shuji Okuda

Kusuo Honda

Hideo Shimomura

Yasuo Kuno

A film mirror which is excellent in anti-staining and scratch resistance and can maintain good specular reflectance for sunlight over long period of time is disclosed, comprising a silver reflection layer provided on at least one side of a resin substrate, wherein the film mirror comprises an outermost layer on a light incident side and a surface of the outermost layer exhibits an electric surface resistivity value of 1.0&#xd7;10to 1.1&#xd7;10ohms per square, a pencil hardness of not less than H and less than 6H, and not more than 30 scratches in a steel wool test under a load of 500 g/cm, and also disclosed are a production method thereof and a reflection device for solar power generation by use thereof.

Film mirror, film mirror for solar power generation and reflection device for solar power generation

A hard coat layeris provided on an outermost surface layer of a film mirrorhaving a first resin base materialand a silver reflection layer, and the hard coat layercontains a polyfunctional acrylic monomer and a silicon resin having an active energy ray reactive unsaturated group.

Mirror and reflective device for generating solar power

In an openable roof capable of opening and closing a central space having a certain point, a stationary roof section is arranged in spaced relation to the certain point of the central space. The stationary roof section has an inner periphery which defines the central space. A movable roof section is arranged on the stationary roof section and is radially movable relatively thereto toward and away from the certain point of the central space. The movable roof section is divided into a plurality of movable roof units having their respective apexes which are substantially identical in central angle with each other. In a closed position where the central space is closed by the movable roof section, the apexes of the respective movable roof units are abutted against each other and the movable roof units cooperate with each other to close the central space. In an open position where the central space is open, the movable roof units are spaced from each other and are spaced from the certain point of the central space to open the latter. A drive unit is provided for drivingly moving the movable roof units between the open and closed positions.

Openable roof

An openable roof includes a plurality of fixed roof members and a plurality of movable roof members. Each fixed roof member is a portion of a sphere, with a subsection removed so as to produce an opening. Each movable roof member is the above-mentioned removed subsection with a further subsection removed. The fixed roof members, constitute the lower portion of the openable roof so that a complete opening results from coincidence of the openings. The movable roof members are mounted on the lower portion of the openable roof in such a manner that each movable roof member moves along a track formed along the rim of the opening of the corresponding fixed roof member.

Openable roof and structure therewith

Trussed girder, roof framing using the trussed girder and method of constructing the roof framing of a building using the trussed girder. In the trussed girder, an upper chord and a lower chord are jointed through lattice members. The trussed girder includes: a prestressing steel member; and an attaching mechanism for attaching the prestressing steel member to at least one of both the upper and lower chords to longitudinally extend under tension for providing prestress to the trussed girder.

Growing community of inventors

Tokyo, Japan

Takenori Kumagai