Abstract: A connecting device configured to connect two construction materials arranged at a distance therebetween, that is, a door frame, a base member, and a reinforcing member of a wall includes a connecting member including a locking portion capable of being locked with a locking target member arranged at one construction material along a thickness direction perpendicular to a direction of the distance and a coupling portion configured to be moved in the thickness direction and coupled to the other construction material by a drill screw as a coupling fitting are arranged at an end on a side of the one construction material and an end on a side of the other construction material. When the coupling portion is not coupled to the other construction material, the locking portion is movable in the thickness direction with respect to the locking target member.

Abstract: A first end portion of a connecting part of a connecting member reaches a locked member arranged such that the thickness direction of one of two construction materials is an axial direction N, and a second end portion of the connecting part reaches the other one of the two construction materials. The second end portion is formed to have a torsion angle ? as an inclination angle to the axial direction N. When the second end portion is coupled with the other construction material by a coupling fitting, the torsion angle ? reduces or disappears, a torsion angle to the axial direction N is generated in the first end portion, the first end portion locks on the locked member, and the connecting member connects the two construction materials.

Abstract: Provided is an opening/closing device that includes a structure for inhibiting a brake engage part or a lock engage part from touching an object or the like and that prevent the perimeter of a guide rail from becoming thick due to the structure. In an opening/closing device in which a brake engage part is caused to engage with a first engaged part by a close prevention device to put a brake on the closing operation of an opening/closing body, a space adjacent to the horizontal width direction end face of the opening/closing body and continuous in the opening/closing body opening/closing direction is ensured, the space is encompassed in the opening/closing body opening/closing direction by the horizontal width direction end face of the opening/closing body, the guide rail, and the support member, and a detach spot for the first engaged part and the brake engage part is arranged within the space.

Abstract: A door is formed into a folding door by dividing the door into two parts to left and right, that is, a hanging door and a door-end door pivotally supported by the hanging door, and the door-end door is used as the pressure difference mitigating mechanism, and the two doors are integrally operated in a normal time, while if a pressure difference is generated, the door-end door can be first opened in order to reduce an opening force, and the door device with a pressure difference mitigating mechanism with excellent operability is provided. A handle position, a latch position, and a torque are adjusted for a handle for door opening/closing, a door closer, a hinge closer for rotating the door-end door with respect to the hanging door, a latch A of the door-end door to a door frame, and a latch B of the door-end door to the hanging door.

Abstract: Provided is an opening/closing device that includes a structure for inhibiting a brake engage part or a lock engage part from touching an object or the like and that prevent the perimeter of a guide rail from becoming thick due to the structure. In an opening/closing device in which a brake engage part is caused to engage with a first engaged part by a close prevention device to put a brake on the closing operation of an opening/closing body, a space adjacent to the horizontal width direction end face of the opening/closing body and continuous in the opening/closing body opening/closing direction is ensured, the space is encompassed in the opening/closing body opening/closing direction by the horizontal width direction end face of the opening/closing body, the guide rail, and the support member, and a detach spot for the first engaged part and the brake engage part is arranged within the space.

Abstract: A door is formed into a folding door by dividing the door into two parts to left and right, that is, a hanging door and a door-end door pivotally supported by the hanging door, and the door-end door is used as the pressure difference mitigating mechanism, and the two doors are integrally operated in a normal time, while if a pressure difference is generated, the door-end door can be first opened in order to reduce an opening force, and the door device with a pressure difference mitigating mechanism with excellent operability is provided. A handle position, a latch position, and a torque are adjusted for a handle for door opening/closing, a door closer, a hinge closer for rotating the door-end door with respect to the hanging door, a latch A of the door-end door to a door frame, and a latch B of the door-end door to the hanging door.

Abstract: A bulletproof glass screen and a bulletproof glass screen device which are relatively light and highly workable and provide a relatively high protectiveness and transparency. The rear face of a laminated glass 2, which is the opposite of the impact side of the glass, is covered by at least one sheet of plastic fracture-proof film 3.

Abstract: The fire extinguishing and smoke eliminating apparatus using water mist, including a water mist nozzle for spraying fine water particles with a designated particle diameter suitable for smoke generated from different types of objects existing in a section indicating a designated range of a fire extinguishing and smoke eliminating object or different types of smoke itself.

Abstract: In a panel shutter assembly including a plurality of shutter panels which are movable up and down along a pair of transversely spaced upstanding guide rails, a pair of chains to which the panels are fastened one after another, a set of sprockets engaging the chains for moving the chains in either direction to move the panels to open and close a shutter opening, and a pair of panel supporting rails from which the panels are suspended in a panel storage space when the shutter opening is opened, the sprockets consist of a pair of first sprockets for moving the panels up and down and a pair of sound sprockets spaced horizontally apart from the first sprockets and provided between the first sprockets and the panel storage space for moving the panels horizontally, and the panel supporting rails extend horizontally. The horizontal supporting rails enable a reduction in height of a box defining the panel storage space.

Abstract: A panel shutter assembly includes a plurality of shutter panels supported one after another between a pair of chains. Each panel is suspended from a pair of pins carried by the two chains, respectively, and each chain, therefore, carries a plurality of pins. Each chain includes a plurality of spaced apart link attachments each having a longitudinally extending pin guide slot through which one of the pins extends slidably along the slot. The chains engage a pair of sprockets, respectively. A pair of arms are supported respectively on the shafts on which the sprockets are rotatably supported. The arms are rotatable with the sprockets and extend radially of the sprockets to project beyond the outer peripheries thereof to engage each pair of pins that have approached the sprockets.

Abstract: In a shutter equipment having a shutter for opening and closing an opening portion such as a building entrance, window or the like the shutter being composed of plural slats positioned in a vertically adjacent relation when the shutter is closed, the slats being wound up and pulled down continuously to stow the slats and close the opening portion, respectively; a slat opening/closing mechanism substantially composed of vertical guide rails disposed vertically on both sides of the opening portion; a box positioned on top of the vertical guide rails to stow the slats transversely in parallel in a vertically suspended state; a pair of right and left endless chains which are movable from the vertical guide rails into the slat stowing box and to which are secured through shafts both end faces of the upper portion of each slat; a vertical slat drive mechanism for winding up and pulling down the chains to raise and lower the slats in a suspended state from the vertical guide rails toward the upper portion of the box

Abstract: A shutter device for opening and closing an opening by ascending and descending motions of panels (2), in which the panels (2) are directly engaged with panel lift means such as a chain or the like to effect the ascending and descending motions of the panels surely and smoothly, and during storage of the panels (2), the panels (2) are folded and suspended from support rails (4).