Abstract: A high security window is presented with a bullet resistant window pane on the exterior, an optional standard window pane on the interior, and an explosion resistant screen centrally located between the panes. The screen is electrically charged to prevent intruders from entering through the window. The window effectively protects against terrorists attacks, yet has pleasing aesthetics. The window can be opened and closed for both safety and security.

Abstract: A floor mat is composed of a multiplicity of rigid elongated rails arranged parallel to each other, each rail having a body portion adapted to receive a tread member and a coupling portion by which it is joined to an adjacent rail. The body and coupling portions are found by extrusion of a rigid high-impact strength thermoplastic polymeric material and are joined by a living hinge of a highly flexible thermoplastic elastomer formed by coextrusion with the body and coupling portions. Each rail includes at least two ribs along its underside laterally spaced apart from each other and adapted to support the rail on a surface, each rib being formed by coextrusion with the body and coupling portions and the living hinge of a soft, compressible thermoplastic polymeric material and serving as a cushion and an anti-slip element of the mat.

Abstract: This umbrella is designed to provide added safety to a user by making the user more visible in darkness to a motorist. Primarly, it consists of a strip on its canopy that is both reflective and will glow when light is provided by either an on board light system or externally from passing car headlights etcetera. The on board lighting system includes a handle for a pole, a battery, a bulb, and a reflector, and a switch for closing a circuit to cause light to be emitted from at least one end of the handle.

Abstract: The invention provides an inflatable article which comprises an inflatable envelope having an enclosing wall made of a flexible heat sealable material, and a pump means having an enclosed pump housing made of a flexible heat sealable material, the enclosed pump housing having a first open flanged end heat sealed to the enclosing wall, the pump housing being compressible and expandable so that it can be operated for pumping air. Single-direction valves are provided for permitting air to follow into the pump housing and the interior of the envelope.

Abstract: A clip for permitting attachment of wallboard to the open side of an outwardly opening C-shaped metal stud, including a clip body portion which engages three sides of the metal stud for increased stability, and a clip hanger portion which extends upwardly and inwardly through the stud open front side and has tabs which engage behind the flanges of the stud open front side.

Abstract: An improved floor drain plate assembly for closing the open mouth of a drain includes an apertured floor drain plate having slots and at least two jam clips. Each of the jam clips has a base and a pair of spaced apart legs. The assembly also includes bolts with an enlarged head and nuts for suspending the clips below the plate. When the clips are in place, one of the legs of each clip is jammed into a slot in the drain plate and the second leg can be forced by the tightening of the bolt and nut outwardly to engage the wall of the open mouth of the drain and secure the drain plate therein.

Abstract: A one-piece plastic attachment for connecting a window glass to its associated sash channel. The attachment is generally U-shaped to define a bottom, a first side wall and a second side wall integrally hinged to the bottom. The side walls carry snap fastener elements to enable the attachment to be readily snap fittingly connected to the glass and are provided with deflectable wings to enable the attachment to be readily snap fittingly connected to the sash channel.

Abstract: An expansion joint having a weather resistant cover and a fire barrier. The cover is a bellows attached to the upper surface of the adjacent joint structure by mounting flanges, and the barrier is a fire resistant inorganic fabric sheet mounted in the joint. The fabric supports resilient fire resistant inorganic fibrous insulation and is connected to the adjacent joint structure by mounting flanges. The flanges may be in the form of a bifurcated clamp, and one of the fabric-engaging clamp faces may be crimped and pierced to better grip the fabric.

Abstract: A planar base material, typically of Masonite.RTM. brand compressed wood, and a thick flexible leather are each cut to an identical geometrical shape suitable for use as a tile within a tessellation. The top side surface of the composite wood underlay is contoured with shallow undulations, typically up to 1/64" deep over a linear extend of 12". The top side peripheral edges of the composite wood underlay and the bottom side peripheral edges of the leather overlay are both beveled. The leather overlay is adhesively bonded, typically by brush-on type contact adhesive, to the composite wood underlay, forming thereby a composite multi-layer laminate leather tile. The edges of tile so formed are well suited visually and functionally for abutting one tile to the next. The major surface of the tile is aesthetically pleasing without presenting any visual flat spots. The composite tiles may optionally be embossed, stained, sealed, and/or waxed upon their upper and edge surfaces.

Abstract: An improved height-adjustable crutch is provided in which the central carrier member, in which is telescopingly received an extensible leg member, is provided with laterally extending ribbed members, defining exterior concave surface, which matingly received therein the cylindrical portions of the diametrically-opposed tubes defining the lower extremity of the crutch proper. Each tube is coupled to a respective one of the ribbed members via a rivet, each rivet being independent of the other, so as to not to obstruct the interior, hollow passageway formed by the central carrier member, to allow for the sliding movement of the leg member in the central carrier member.

Abstract: A building that includes a plurality of spaced apart pilasters vertically disposed, that are raised above ground level to a given elevation wherein the top of the pilasters lie in a common horizontal plane. A barrier wall is erected on the inside of the pilasters using heavy beam members. Wooden truss members are seated on top of the pilasters. Each truss member contains a vertically disposed column section and an upwardly pitched roof beam section. The crown of each truss roof section is attached to the crown of at least one other truss member. The truss members are covered with sheeting to enclose the building above the top of the barrier wall.

Abstract: A contaminant shield prevents airborne contaminants from contacting manufactured parts in a work area in a manufacturing facility. The contaminant shield is formed of a plurality of like frames, each formed of a plurality of interconnected side frame members covered by a flexible sheet attached at its outer edges to the side frame members. The frames are interconnected at adjacent edges to form the complete contaminant shield. A sealing strip is applied to the joints between adjacent frames to form a continuous contaminant barrier in conjunction with the flexible sheet attached to each frame. The contaminant shield is constructed by first constructing a plurality of frames by interconnecting side frame members into a rigid, planar frame and attaching the edges of a flexible sheet to each side frame member of the frame.

Abstract: A telescopic centerpost of a multiple-fold umbrella includes an upper retainer having an upper catch protruding leftwardly for supporting a left portion of a slider of umbrella canopy and spokes and a slider straightener having a protrusion protruding rightwardly for retaining a right portion of the slider for keeping the slider stably vertically, and at least a reinforced catch having two balls respectively engageable with two sets of double holes respectively formed in an inner tube and an outer tube for firmly coupling the inner and outer tubes.

Abstract: A tent comprising a frame, sheet material on the frame formed into an enclosure having a base and a ceiling with an opening in the ceiling and an elongated pivot member having opposite ends and mounted for pivotal movement over the opening. A flexible flap is coupled to the sheet material and to the pivot member so that the pivot member can pivot to cause the flap to open and at least partially close the opening. A rain fly of flexible sheet material is adapted to overlie the opening and be supported by the pivot member above the opening to thereby close the opening and increase the vertical space available in the tent.

Abstract: This invention relates to a channelled structural element and in particular to one including a main element having an engaging portion along a central line of the inner side thereof and a groove with an psoen top and a groove with an open bottom at both sides thereof, an auxiliary element provided with a vertically extending portion beside which there is a tenon having a right angle surface and a slot, and a fixed element formed with a hole at the center and a lip at both sides whereby the fixed element is first rigidly mounted on a wall and then the main element is press-fitted into the fixed element and the auxiliary element is engaged with one side of the main element.

Abstract: A wooden truss member including a vertically disposed column section and an upwardly pitched roof beam section angularly disposed from the top of the column section to form a corner therebetween, each section including a hollow frame that is covered by side panels. The two sections are joined at the corner by means of an elongated flange. Plywood panels are used to cover each of the section frames and are arranged so that the grain of each panel runs along the length of the frame section. Special corner panels are mounted between the sections to enclose the corner region therebetween. The grain of the corner panels is arranged to run perpendicular to the corner flanges.

Abstract: An elongated sheet metal corner framing element is provided having an essentially "E" shaped cross-sectional area. The center point of the "E" is longer than the end points and one section of the "E" is configured to engage a flange of an H- or I-beam structural member. The other section of the "E" extends from the structural beam and forms a squared open corner section along the entire beam length for attachment of wallboard thereto. The extra length center point of the "E" configuration permits shooting (with power driven pins or nails) of the corner element to the beam at spaced intervals along the element length where more than a frictional fit is desired or required. The corner element may be cold-rolled, extruded, or formed of a flat or square bottom U-channel with an uneven side sheet metal angle attached therein via spot welding or metal screws.

Abstract: A mortar collecting device adapted to be located adjacent a wall surface of a masonry or brick wall under construction and collect excess mortar extruded from between rows of masonry during construction of the wall. Such mortar collecting devices each posses an upper surface means adapted to collect mortar but repel moisture in the form of water droplets which falls on such surface means. Repulsion of water is accomplished by providing an upper surface means having an inclined portion sufficiently inclined to the horizontal when such device is in mortar collecting position so as to cause moisture to slide off, but being insufficiently inclined so as to cause mortar to slide off. Alternatively the mortar collecting device may have a plurality of passageway means extending vertically therethrough of dimensions sufficient to allow moisture to pass therethrough, but of dimensions insufficient to allow mortar to pass therethrough.

Abstract: A frame structure formed of a plurality of parallelly disposed rafter bars having axially connected thereto, a plurality of bow members forming the rear wall. The edges of said rafter bars are connected to a ridge bar and supported above ground level by uprights connected thereto in the vicinity of said ridge bar and the ends of said bow members being set in base plates on the ground, and a covering shaped to fit over said frame structure. Various cross bars and supports may be provided.

Abstract: A combination void drain vent chair for use in the construction of voided concrete shapes, including an elongated tube connecting the interior of the void form to the exterior of the concrete shape, and including a flat flexible member surrounding the upper end of the tube which may be attached to the under surface of the void form so that the void drain vent chair may be conveniently used with void forms that are circular in cross section, as well as those that are rectangular in cross section.