Abstract: A ceiling construction for buildings has a plurality of flanged main beams disposed in a predetermined spaced relationship to each other and bridging wall mouldings opposed and spaced from each other; a plurality of flanged cross beams connected to the main beams in a predetermined spaced relationship to each other at right angles on the main beams so as to form a ceiling framework; a ceiling wall mounted to the ceiling framework so as to form an access opening in a predetermined position; a pair of auxiliary beams; an access door; and a plurality of mounting devices for the access door. The pair of auxiliary beams each is bridged in a predetermined relationship to the opposite main beams of the main beams adjacent to and spaced from each other or the opposite cross beams of the cross beams adjacent to and spaced from each other on the inner side of the ceiling wall in relation to the access opening.

Abstract: A top rail for handrails comprises a top rail body formed of soft synthetic resin, semi-hard synthetic resin or synthetic rubber and having a bendable metal core incorporated therein extending in the longitudinal direction thereof. The bendable metal core is bendable under a force in excess of a predetermined value and maintains the top rail body in its bent position when the core is bent together with the body. The bendable metal core can be the form of an elongated solid steel bar, to which a lubricant has been applied to the surface thereof and soft or semi-hard synthetic resin is extruded about the lubricant applied surface to form the top rail body. The bendable metal core can also be in the form of an elongated solid aluminum or aluminum alloy bar to which is applied adhesive about the surface thereof and soft or semi-hard synthetic resin is extruded about the adhesive applied surface.

Abstract: A ceiling construction for buildings has a plurality of flanged main beams disposed in a predetermined spaced relationship to each other and bridging wall mouldings opposed and spaced from each other; a plurality of flanged cross beams connected to the main beams in a predetermined spaced relationship to each other at right angles to the main beams so as to form a ceiling framework; a ceiling wall mounted on the ceiling framework so as to form an access opening in a predetermined position; a pair of auxiliary beams; a plurality of fastening devices for the auxiliary beams; an access door; and a plurality of mounting devices for the access door. The pair of auxiliary beams each is bridged in a predetermined relationship to flanges the opposite main beams of the main beams adjacent to and spaced from each other or flanges of the opposite cross beams of the cross beams adjacent to and spaced from each other in the access opening on the ceiling wall.

Abstract: A top rail for handrails comprises a top rail body formed of soft synthetic resin, semi-hard synthetic resin or synthetic rubber and having a bendable metal core incorporated therein extending in the longitudinal direction thereof. The bendable metal core is bendable under a force in excess of a predetermined value and maintains the top rail body in its bent position when the core is bent together with the body. The bendable metal core can be the form of an elongated solid steel bar, to which a lubricant has been applied to the surface thereof and soft or semi-hard synthetic resin is extruded about the lubricant applied surface to form the top rail body. The bendable metal core can also be in the form of an elongated solid aluminum or aluminum alloy bar, to which is applied adhesive about the surface thereof and soft or semi-hard synthetic resin is extruded about the adhesive applied surface.

Abstract: An access door to be installed on the ceiling or the like of a building which essentially comprises an outer square frame adapted to be installed in an opening formed at said installation area; an inner square frame pivotally connected to said outer frame for movement between open and closed positions; a pair of link hinge means provided on each of two selected sides of said outer frame to pivotally connect said frame to said outer frame; and a lock means for locking said inner frame to said outer frame as the inner frame is in its closed position.The inner frame has a joint finishing flange at the peripheral edge thereof to conceal the peripheral edge of said outer frame as the inner frame is in its closed position.

Abstract: A ceiling construction for buildings has a plurality of flanged main beams disposed in a predetermined spaced relationship to each other and bridging between wall mouldings opposed and spaced from each other; a plurality of flanged cross beams connected to the main beams in a predetermined spaced relationship to each other at right angles to the main beams so as to form a ceiling framework; a ceiling wall mounted on the ceiling framework so as to form an access opening in a predetermined position; a pair of auxiliary beams; an access door; and a plurality of hanger devices for the access door. The pair of auxiliary beams each is bridged in a predetermined relationship across the webs of the opposed main beams of the main beams adjacent to and spaced from each other or webs of the opposed cross beams of the cross beams adjacent to and spaced from each other in the access opening.

Abstract: A stair nosing is constituted by a flat frame for lying on a tread of a stair, a non-skid flat tire-like sheet adapted to be snappedly engaged to the flat frame and a tongue-shaped protector for the engaging portion of the flat sheet frame and the non-skid flat sheet. The non-skid flat sheet includes a connecting plate of rigid synthetic resin having a flange with a rib at one edge and a non-skid flat tread of flexible synthetic resin integrally formed on the upper surface of the connecting plate. The tongue-shaped protector is integrally formed with the non-skid flat tread so as to cover the engaging portion of the frame sheet and be spaced from a riser of the stair when the non-skid flat sheet is secured to the flat sheet frame.

Abstract: A stair nosing is constituted by an edge base made of a hard material and adapted to be installed on the tread of a stair step, and an edge bead cushion formed on a surface of the edge base so as to be located at the stair tread nosing of the stair step. A positioning groove is formed on the surface of the edge base behind the edge bead cushion, and a gripper is adapted to be set in the positioning groove and to be secured to the edge base. The edge base is provided with a riser cover integrally formed at the front edge thereof so as to be positioned on the riser of the step in a manner to fit over the stair tread nosing. The gripper is composed of a sheet member adapted to be positioned in the groove and a number of spaced nails projected from the surface of the sheet member.

Abstract: An access door is constituted by an outer framework adapted to be fitted in a rough opening formed in a building ceiling, wall, or the like, an inner framework set in an opening in the outer framework, a cover plate secured to the inner framework so as to close an opening in the inner framework, a pair of bearings and axis for pivotally connecting the inner framework to the outer framework, and a locking means for locking the inner framework to the outer framework when the inner framework closes the opening in the outer framework. The bearings are projected on one framework of the opposite inner surfaces of the outer framework and the opposite outer surfaces of the inner framework, and have U-shaped bearing surfaces. The axis are projected on another framework of the opposite inner surfaces of the outer surfaces of the inner framework, and pivotally supported to the bearings, respectively.

Abstract: A drawer type emergency escape is constituted by a stowage box attached to a support, a slidable frame normally received in the stowage box and extended out of the stowage box as the escape is employed, and a shift mechanism for pulling the slidable frame out of the stowage box as the escape is employed. An extensible escape device is connected to the slidable frame, is normally received in the frame for extending out of the frame as the escape is employed and comprises a plurality of telescopically connected pipe sections of different cross-sectional areas.

Abstract: A drawer type emergency escape is constituted by a stowage box adapted to be attached to a support, a slidable frame adapted to be slidably extended out of and retracted into the stowage box, a telescopically extensible escape means attached to the slidable frame to be received into and extended out of the frame, and a shift mechanism for pulling the slidable frame out of the stowage box as the escape is employed. The shift mechanism includes a drive arm connected to a shift handle, a slide shift link, a connection link connecting the drive arm to the slide shift link and an extensible tong means disposed between the slide shift link and slidable frame for extending and retracting the slidable frame out of and into the stowage box.

Abstract: A top rail for use in connection with a railing construction or the like is constituted by a main top rail member, a resilient cushion layer fitted on the main top rail member, and a surface portion layer integrally formed with the outer surface of the resilient cushion layer. the main top rail member has a support post receiving slot extending in the longitudinal direction of the top rail and opening downwardly.