Abstract: The present invention relates to a face grating including bearer members having a large number of holding projections formed at predetermined intervals along their longitudinal dimension. The bearer members are fixed to the exterior wall above and below or to the left and right of a building window with the holding projections facing outwardly. A plurality of elastic panels are formed in a substantially channel-like shape with curved portions at their opposing longitudinal edges and are mounted on the holding projections of the bearer members with the holding projections pushed inwards. Elastic covering members have a large number of push-in projections formed at predetermined intervals for fitting into spaces between mutually adjacent panels at positions corresponding to the bearer members or in the vicinity thereof.

Abstract: The sheet panel of the present invention is formed by a panel forming apparatus comprising a first forming mechanism for forming a center projection at a central portion of a sheet panel, a second forming mechanism for forming S-shaped curve faces on both sides of the center projection of the sheet panel, a third forming mechanism for forming side projections at both sides of the center projection of the sheet panel, and a fourth forming mechanism for forming S-shaped curve faces on both sides of the side projections of the sheet panel.

Abstract: A panel assembly of the present invention comprises a stringer and a plurality of sheet panels each having a curved portion extending downward at one side thereof and a curved portion extending upward at the other side thereof. The stringer has on the top thereof a plurality of panel engaging portions adjacent to one another, each having upstream side convex portion, around which the curved portion of the sheet panel extending downward is hooked, a downstream side concave portion, into which the curved portion of the sheet panel extending upward Is fitted, and a planar portion extending from the upstream side convex portion to the downstream side concave portion. The planar portion of the panel engaging portion of the stringer is inclined downward from the upstream side convex portion to the downstream side concave portion. An upper portion of the concave portion of the panel engaging portion having a groove, into which a tip end of the curved portion of the sheet panel extending upward is fitted.

Abstract: A method of assembling a panel assembly in which a right-hand curved portion of a first upper panel is curved convexly outward at both the side edges thereof and extends in the transverse direction of the panel assembly, and is engaged with a left-hand inner curved surface in a first pair of the inner curved surfaces of a support provided with a large number of pairs of inner curved surfaces located at small intervals with one another on the top of the support and corresponding to the arc-shaped curves of upper panels; the right-hand curved portion of a second upper panel is then engaged with the left-hand inner curved surface in a second pair of the inner curved surfaces of the support, which neighbors the right-hand inner curved surface in the first pair; the left-hand curved portion of the second upper panel is then placed on the right-hand inner curved surface in the first pair of the inner curved surfaces of the support; the left-hand curved portion of the second upper panel is then engaged with the righ

Abstract: A panel assembly wherein plurality of upper panels are connected by a plurality of elongated couplers. Each upper panel is made of an elastic material and curved convexly outward at both the side edges thereof and extend in the transverse direction of the panel assembly. Each coupler extends in the transverse direction of the panel assembly and has inner curved surfaces which have curves coincident with those of the upper panels and extend in the face of each other on the upper portion thereof so that a gap, into which two of the upper panels can be inserted, is defined between the inner curved surfaces. A support member having nearly semicircular curve coincident with the curve of the panel and a plurality of couplers is inserted into the gap, so that the support member is fixed to the panels.