Abstract: A fastening member which is designed to receive a downwardly directed component force on the occasion of fixing it to a post or a stud of a building frame, thereby preventing it from being inadvertently floated up, thus ensuring always a stably fastened state of the building board. This fastening member is featured in that the inner wall of the concave portion formed in the substrate of the fastening member is provided at a lower wall portion thereof with an obliquely projected portion which enables a downwardly directed component force to be acted on the fastening member by allowing the projected portion to be contacted with a large head portion of the fixing member at a final stage of fixing it to a post or a stud of a building frame through an opening formed in the bottom of the concave portion.

Abstract: Siding boards for clapboard boarding are used in a clapboard boarding structure in which lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards for installing a plurality of siding boards to a framework of a building. The siding boards are ceramic type siding boards with vertical joint grooves being formed on designed surfaces. Lower edges of the lower side portions of the siding boards are formed at different heights with the boundaries of the vertical joint grooves. Rear surface stepped portions that have been obtained by notching the rear surface are formed at the lower side portions. Upper end portions of the rear surface stepped portions are formed in a substantially straight line in lateral directions.

Abstract: Siding boards for clapboard boarding are used in a clapboard boarding structure in which lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards for installing a plurality of siding boards to a framework of a building. The siding boards are ceramic type siding boards with vertical joint grooves being formed on designed surfaces. Lower edges of the lower side portions of the siding boards are formed at different heights with the boundaries of the vertical joint grooves. Rear surface stepped portions that have been obtained by notching the rear surface are formed at the lower side portions. Upper end portions of the rear surface stepped portions are formed in a substantially straight line in lateral directions.

Abstract: A building board which is provided on the surface thereof with a concave and convex pattern, and opposite sides thereof with overlying rabbeted portions (2-1, 6-1, 6-2) and underlying rabbeted portions (3-1, 3-2, 5-1), respectively, wherein each overlying rabbeted portion (2-1, 6-1, 6-2) is constituted by one end portion of the convex portion (2, 6) of said pattern; each underlying rabbeted portion (3-1, 3-2, 5-1) is constructed to have an area bigger than the area of corresponding overlying rabbeted portion (2-1, 6-1, 6-2) bearing said convex portion and formed on the opposite side; and each of said opposite sides is provided on the rear side thereof with a linear contact surface (7-1, 7-2).

Abstract: When a nitride film is formed on a substrate containing at least metallic aluminum, a fluctuation in forming a nitride film can be prevented, or the formation of the nitride film can be accelerated. A substrate containing at least metallic aluminum is subjected to a heating treatment in vacuum of 10−3 torrs or less, and subsequently it is subjected to a heating/nitriding treatment in an atmosphere (5) containing at least nitrogen. During the heating/nitriding treatment, porous bodies (3) and (4) through which nitrogen atoms-containing gases (A) and (B) can flow are contacted with the atmosphere (5).

Abstract: A building board which is provided on the surface thereof with a concave and convex pattern, and opposite sides thereof with overlying rabbeted portions (2-1, 6-1, 6-2) and underlying rabbeted portions (3-1, 3-2, 5-1), respectively, wherein each overlying rabbeted portion (2-1, 6-1, 6-2) is constituted by one end portion of the convex portion (2, 6) of said pattern; each underlying rabbeted portion (3-1, 3-2, 5-1) is constructed to have an area bigger than the area of corresponding overlying rabbeted portion (2-1, 6-1, 6-2) bearing said convex portion and formed on the opposite side; and each of said opposite sides is provided on the rear side thereof with a linear contact surface (7-1, 7-2).

Abstract: A building board which is provided on the surface thereof with a concave and convex pattern, and opposite sides thereof with overlying rabbeted portions (2-1, 6-1, 6-2) and underlying rabbeted portions (3-1, 3-2, 5-1), respectively, wherein each overlying rabbeted portion (2-1, 6-1, 6-2) is constituted by one end portion of the convex portion (2, 6) of said pattern; each underlying rabbeted portion (3-1, 3-2, 5-1) is constructed to have an area bigger than the area of corresponding overlying rabbeted portion (2-1, 6-1, 6-2) bearing said convex portion and formed on the opposite side; and each of said opposite sides is provided on the rear side thereof with a linear contact surface (7-1, 7-2).

Abstract: In order to improve a heat-cycling-durability of a structural body in which a nitrided material is provided on a substrate containing at least metallic aluminum, a heat-resistant structural body having a substrate containing at least metallic aluminum and a nitrided material formed on the substrate provided. The nitrided material is composed mainly of an aluminum nitride phase and a metallic aluminum phase. Preferably, the nitrided material contains at least one metallic element selected from Group 2A, Group 3A, Group 4A, and Group 4B in Periodic Table.

Abstract: While a nitride film is formed on a substrate containing metallic aluminum, a fluctuation in forming nitride film can be prevented, or the formation of the nitride film can be accelerated. A substrate containing at least metallic aluminum is subjected to a heating treatment in vacuum of 10−3 torr or less, and subsequently it is subjected to a heating/nitriding treatment in a atmosphere containing at least nitrogen to form a nitride film. A porous body through which a nitrogen atoms containing gas flow is clarified by heating at a temperature of 1000° C. or more under pressure of 10−4 torr or less, and then the porous body is contacted the atmosphere during the heating/nitriding step.

Abstract: Siding boards for clapboard boarding are used in a clapboard boarding structure in which lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards for installing a plurality of siding boards to a framework of a building. The siding boards are ceramic type siding boards with vertical joint grooves being formed on designed surfaces. Lower edges of the lower side portions of the siding boards are formed at different heights with the boundaries of the vertical joint grooves. Rear surface stepped portions that have been obtained by notching the rear surface are formed at the lower side portions. Upper end portions of the rear surface stepped portions are formed in a substantially straight line in lateral directions.

Abstract: While a nitride film is formed on a substrate containing metallic aluminum, a fluctuation in forming nitride film can be prevented, or the formation of the nitride film can be accelerated. A substrate containing at least metallic aluminum is subjected to a heating treatment in vacuum of 10−3 torr or less, and subsequently it is subjected to a heating/nitriding treatment in a atmosphere containing at least nitrogen to form a nitride film. A porous body through which a nitrogen atoms containing gas flow is clarified by heating at a temperature of 1000° C. or more under pressure of 10−4 torr or less, and then the porous body is contacted the atmosphere during the heating/nitriding step.

Abstract: A fixture which is formed through a bending work of a single metallic plate, is used as a fastening member for siding boards. The fixture comprises a vertical substrate; a horizontal portion extended from the substrate; and an engaging portion formed at the tip portion of the horizontal portion. The horizontal portion includes a first horizontal member and a second horizontal member put together. The engaging portion includes a vertical flat plate member which is formed contiguous to the first and second horizontal members.

Abstract: A building board which is provided on the surface thereof with a concave and convex pattern, and opposite sides thereof with overlying rabbeted portions (2-1, 6-1, 6-2) and underlying rabbeted portions (3-1, 3-2, 5-1), respectively, wherein each overlying rabbeted portion (2-1, 6-1, 6-2) is constituted by one end portion of the convex portion (2, 6) of said pattern; each underlying rabbeted portion (3-1, 3-2, 5-1) is constructed to have an area bigger than the area of corresponding overlying rabbeted portion (2-1, 6-1, 6-2) bearing said convex portion and formed on the opposite side; and each of said opposite sides is provided on the rear side thereof with a linear contact surface (7-1, 7-2).

Abstract: When a nitride film is formed on a substrate containing at least metallic aluminum, a fluctuation in forming a nitride film can be prevented, or the formation of the nitride film can be accelerated. A substrate containing at least metallic aluminum is subjected to a heating treatment in vacuum of 10−3 torrs or less, and subsequently it is subjected to a heating/nitriding treatment in an atmosphere (5) containing at least nitrogen. During the heating/nitriding treatment, porous bodies (3) and (4) through which nitrogen atoms-containing gases (A) and (B) can flow are contacted with the atmosphere (5).

Abstract: In order to improve a heat-cycling-durability of a structural body in which a nitrided material is provided on a substrate containing at least metallic aluminum, a heat-resistant structural body having a substrate containing at least metallic aluminum and a nitrided material formed on the substrate provided. The nitrided material is composed mainly of an aluminum nitride phase and a metallic aluminum phase. Preferably, the nitrided material contains at least one metallic element selected from Group 2A, Group 3A, Group 4A, and Group 4B in Periodic Table.

Abstract: A fastening member which is designed to receive a downwardly directed component force on the occasion of fixing it to a post or a stud of a building frame, thereby preventing it from being inadvertently floated up, thus ensuring always a stably fastened state of the building board. This fastening member is featured in that the inner wall of the concave portion formed in the substrate of the fastening member is provided at a lower wall portion thereof with an obliquely projected portion which enables a downwardly directed component force to be acted on the fastening member by allowing the projected portion to be contacted with a large head portion of the fixing member at a final stage of fixing it to a post or a stud of a building frame through an opening formed in the bottom of the concave portion.

Abstract: A fastening member which comprises a substrate; a horizontal portion perpendicularly projected from the substrate; an upwardly inclined hook portion obliquely extended upward from a distal edge of the horizontal portion; a downwardly inclined hook portion obliquely extended downward from the distal edge of the horizontal portion; and a flat plate portion extended parallel with the substrate from a distal edge of the upwardly inclined hook portion and/or of the downwardly inclined hook portion. The substrate may be provided with an urging means for pressing the back surface of a siding board to prevent slipping.

Abstract: An external corner formative member which comprises an angled corner plate portion, and a pair of groove portions formed on the opposite sides of the corner plate, respectively, for receiving a side edge portion of a building board, wherein at least one rib which is adapted to be contacted with the building board so as to function as a weir for preventing rain water from penetrating (or for receiving the kinetic energy of rain water) is projected from the bottom of the groove portions. A broad space is formed between the rib and a back plate portion of the groove so as to interrupt the flow of rain water running toward the interior of building frame. A ridge functioning as a weir may be formed on the back plate portion of the groove portion.

Abstract: A metal fixture assembly for installation of vertical sidings to fix the siding to a furring, which is capable of providing a construction of the installation having excellent appearance and weathering, and a method using the metal fixture assembly to facilitate the installation. A metal fixture assembly for installation of a vertical lower siding and a vertical upper siding vertically adjacent to each other on a furring is positioned therebetween. The metal fixture assembly includes a fastening metal fixture to be fixed to the furring, an upper metal fitting provided between the fastening metal fixture and the upper siding and fittingly fixed on a bottom portion thereof, and a lower metal fitting provided between the fastening metal fixture and the lower siding and fittingly fixed on a top portion thereof.

Abstract: A plurality of engaging pieces each formed of washer (35) for instance are fixed to the rear surface of a building board (30). A plurality of elongated fixtures (10), each provided at the lower end thereof with an engaging tongue (20a) and at the upper end thereof with an engaging region (12a) designed to be engaged with the engaging tongue (20a), are engaged with the engaging pieces. The fixtures (10) thus engaged are directly fixed to the posts (1) or studs (2) of a building. Since each fixture (10) is provided with a rising portion (12), a ventilation space (Sc) is secured between the framework of the building and the rear surface of a building board (30). The coupling between upper and lower building boards (30) can be effected through the linkage between a couple of fixtures (10). Since the engaging tongue (20a) is made separable from the building board (30), the building boards (30) can be transported for instance without becoming bulky.