Abstract: A roof jack or vent seal which is unitarily vacuum formed of polypropylene synthetic rubber polymer and a U.V. stabilized pigment and which has a planar roof covering with a central upstanding frusto-conical section including stepped graduated portions, with the region between each graduated portion capable of flexing to accommodate differences in the roof pitch.

Abstract: A plastic plank member, for use with a deck arrangement, having a rigid base portion and a tread portion attached thereto which are integrally extruded of suitable plastics. The rigid portion of the plank member is adapted to be secured to an underlying support structure. The tread portion is formed with protrusions projecting upwardly away from the tread and grooves formed therein. The characteristics of the tread result in a sufficiently high coefficient of friction to reduce the possibility of slipping on the plank member.

Abstract: A temporary shelter having an inflatable, tubular base frame with inflatable, tubular wall support ribs fixedly attached thereto, the ribs converging to near an apex of the shelter. Flexible, water-resistant wall portions are fixedly attached to the tubular base and wall support ribs. The base frame, wall support ribs and wall covering form a domed structure when the base frame and support ribs are inflated.

Abstract: An apparatus for securing adjustable roofing support spacers to underlying secondary structural supports, the adjustable roofing support spacers used to support a new sloped roof system over a preexisting roof deck. The apparatus comprises a bearing member which is positioned on top of the existing roof deck, and connectors which connect the bearing member and the support spacer to the structural support and extensive through the roof deck.

Abstract: A mullion structure for enclosing sun spaces consisting of a system of straight and curved beams for supporting transparent plastic panels. The beams have cross-sectional configurations presenting end flanges which facilitate end-to-end and/or perpendicular attachment and side flanges presenting rabbets for receiving and enclosing the edges of the panels. Elongated spars having longitudinally extending rabbets are formed by joining the curved beams together in end-to-end relationship. The spars are connected to a host structure using a torsion relieving system which is made up of a torsion beam extending perpendicularly from the spar and a load bearing plate attached to the host structure. The spars are laterally flexible so that the panels may be inserted into the rabbets and flexed to assume the shape of the spars after the spares are secured to the host structure. All operations necessary for erecting the structure may be conducted from inside the space being enclosed.

Abstract: A corner cap which is designed to be formed into a selected configuration, and then attached to the corner post of a building. The corner cap is designed so that its configuration is adjustable to enable the corner cap to be attached to corner posts with configurations which can vary over a predetermined range. In use, the corner cap is adjusted, on site, to a selected configuration which corresponds to the configuration of a corner post. The corner cap is then fixed in the selected configuration, and attached to the corner post to close the end of the corner post.

Abstract: Tubular bars are connected to form room or open space framing by screw bolts with heads at their ends to connect the bars with intersecting members. Screw bolts with heads are supported in the end areas of the bars to be rotatable and axially movable. Their outward axial movement in each case is limited by a limiting boss in the end area of each bar. The limiting boss for the screw bolts with heads is formed by shaping of the end segments of the tubular bars in their hollow space. In tubular bars with tapered, truncated conical end segments, the head of the screw bolts can be welded against the inside wall of these end segments, when it is of correspondingly fitted truncated conical shape.