Abstract: The filter element of a filter has an internal face, an external face, a filtering mesh, two concentric circular inner and outer edges between which the filtering mesh extends, and radial ribs provided on the internal face. The radial ribs extend between the concentric edges and are distributed circumferentially in order to form sectors on the internal face. The filter element is configured to be assembled against a corresponding filter element so that the internal face faces the corresponding filter element. At least some of the sectors have a reinforcing rib connecting a radial rib to the outer edge, the reinforcing rib having a portion that is inclined, when viewed in the radial plane, with respect to the radial rib and to the outer edge.

Abstract: A support grid assembly for use in a vessel. The support grid assembly includes panels each including a first wall including a media-supporting screen and a second wall to be supported by the vessel wall inner surface. A manifold is coupled to the panels and is in hydraulic communication with vessel outlet. The manifold and the panels permit fluid to flow through the screen in each panel, through the panels, into the manifold, and through the manifold to the outlet of the vessel, as well as in the reverse direction. At least a portion of the first wall may slope downward toward the manifold, and at least a portion of the second wall may form a bottom surface that is curved to substantially conform to a curvature of the vessel wall inner surface. The panels may be arranged in a circular configuration extending radially from the manifold.

Abstract: Method and apparatus for an electrically powered hand tool which can be used to install a spline into the groove on a frame member of a screened-in porch or window screen wherein the tool uses a reciprocating roller to press the screen and spline into the groove of the frame member so that the screen can be secured to the frame member. The hand tool has a handle serving as a housing for an electric motor with a rotating output shaft connecting to a transmission for creating reciprocating motion of a drive shaft having a distal end supporting a rotatable wheel adapted to compress the spline in the groove containing a portion of the screen while the handle is moved along the spline in the groove by a user.

Abstract: A disc segment adapted to be attached to other disc segments to form a disc assembly, the disc segment including an isosceles trapezoid frame. The frame comprises a left side rail and a right side rail, and a plurality of spaced apart parallel horizontally extending ribs connected between the side rails. The frame defines a first disc side and an opposite second disc side, each disc side including a corrugated left bottom clamp list adjacent the left side rail and supported by the ribs, and a corrugated right bottom clamp list adjacent the right side rail and supported by the ribs. Each disc side also includes a corrugated wire mesh supported by the left and right clamp lists, and supported by the frame ribs.

Abstract: An apparatus for installing a screen material includes a main body having a tube disposed therethrough, the tube adapted to receive a spline material, a leg having a rotatably attached insertion wheel coupled to the main body, and an alignment wheel rotatably coupled to the body in alignment with the insertion wheel.

Abstract: A frame for a window screen assembly is provided that uses corner locks to secure the rails and stiles. Interlocking features provided by the corner locks are used to secure the corner locks to the rails and stiles. A method of securing screens to different sized frames using a three-stage operation is disclosed. Adhesive and a movable flange are used to secure the screen to the frame in one disclosed embodiment.

Abstract: Disclosed is a structural material having a wire lattice configuration. The structural material can manufactured by first weaving a continuous wire filament on a loom assembly. Once woven into arrays of parallel wires, the filament is fixed in position and cut into segments. The segments are then placed in a rig. The rig positions the segments at relative angles so as to form a matrix or mesh. In the final step of the manufacturing process, the wires are welded together using, for example, a forge press. Alternatively, the material can be formed by first holding wire segments in a pair of rigs and then sequentially welding the wire segments together. The structural material of the invention can be used alone or layered to form a multilaminate material.

Abstract: An apparatus and a method for applying a fabric material to a rectangular frame having a fabric retention groove along respective side members thereof. The apparatus comprises a support structure having a planar frame support which is comprised of two pairs of opposed parallel frame engaging members. One of the frame engaging members of each of the pairs is an adjustably displaceable member. Each frame engaging member has one or more gripping elements for holding respective ones of the side members of the frame along a substantially straight axis and actuable to release the side members. A jaw member is provided to position a predetermined length of the fabric material over the frame to overlie the fabric retention groove of the frame side members. A spline cord positioner is displaceable in alignment with the retention grooves for applying a spline cord in the grooves from above the fabric material to retain the material therein.

Abstract: An integrally moulded device for applying pressure to screen material or a retaining bead, to force same into a groove of a frame member is disclosed. The tool has a central body graspable by the human hand and a thin blade member at each end, each blade member having a straight edge surface extending from the body and a convexly arcuate edge surface extending from the outer end of the straight edge surface back to the body. One arcuate edge surface is transversely rounded for preforming screen material into the groove. The other arcuate edge surface is transversely V-shaped for pushing a flexible bead into the groove to retain the screen material therein. The shape of the blade members permits the application of pressure completely into corners defined by abutting grooves.

Abstract: One end portion of a wire net is fixedly secured to a fixed holder on a base frame of a sieving machine provided with a vibration device, the other end portion thereof is fixedly secured to a movable holder that is provided on the base frame so as to be freely movable, this movable holder is biased in the direction of separating the movable holder from the fixed holder by means of a spring provided on the base frame, and also, on the base frame is provided a hydraulic device which moves the movable holder in the direction of approaching to the fixed holder against the resilient force of the spring. During operation of this sieving machine, in orer to clear blocking of the meshes of the wire net, the hydraulic device is actuated only when the particles of raw material which caused the blocking are shaken off by relaxing the wire net and broadening the distance between adjacent wires in the wire net.

Abstract: A disposable screen and spline installation tool for use to install screen material in a frame having a groove around one side edge which holds the screen peripherally with the aid of a retainer spline, the tool being a unitary body of elongate form having at a first end a first disc-like operator member with an arc-shaped edge which is convex in cross-section for forming a channel of the screen material in the frame groove, and at a second end a second disc-like operator member with an arc-shaped edge which is concave in cross-section for setting a spline into the channel.

Abstract: An improved vibratory separator screen in which a wire mesh having least a first pair of opposed end portions each comprising a reinforced edge strip tensioned to a surrounding frame comprises a reinforcing spline member located adjacent each of the opposed end portions with the spline adjacent opposed ends portions being completely encapsulated, such as with cured vulcanized rubber, to fixedly secure the spline member to the adjacent opposed end portion with the mesh at a desired tautness for providing a substantially evenly tensioned mesh when tensioned to the surrounding frame. The completely encapsulated spline adjacent opposed end portions comprise the reinforced edge strips which each have sealed end points.

Abstract: A tool for the assembly of screens to windows consisting of a table or bench top for mounting the tool thereon, a gear train mountable to the edge of the bench or table, a hand driven gear for manually and positively driving the assembly tool along the gear train, a housing enclosing the manually driven gear with a shaft affixed to and protruding from the top of the housing for adjustable assembly of the screen assembly mechanism, adjustable vertical and horizontal shafts for alignment of the tool to the window screen, and a wheel moveable about the perimeter of the window screen to apply pressure to the flexible tube for binding of the screen within the window frame, this same tool being usable for the assembly of screens to windows or to doors.