Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Abstract: Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Abstract: A weight filling device for filling small objects comprising a vibrating feed assembly, at least two bins in a side by side orientation, and a chute assembly. The feed assembly includes feed stations having a feed tray with a large feed portion and a small feed portion in a side by side orientation, either integrally formed along a part or all of the length thereof, and each extending to a distal end thereof and vibrating at a predetermined frequency. The bins are positioned so as to be placeable in communication with the distal end of the at least one feed tray. The chute assembly is positioned below the distal end of the at least one feed tray, and has at least one directing chute station having a large feed selector positioned below the large feed portion of the feed tray and a small feed selector positioned below the small feed portion of the feed tray.

Abstract: In an apparatus for separating particulate material of a selected size from particulate material of a smaller size, there is provided a screen assembly having a screen element for separating the particulate material. A tray assembly loosely supports impact elements in close relationship to the screen to dislodge particulate material from the apertures of the screen upon impact during operation of the apparatus which agitates the screen and tray assembly. The screen element and the tray assembly form an enclosure for the impact elements. The screen assembly and tray assembly are intermeshed and independently supported from one another and are adapted to separate upon removal from the apparatus.

Abstract: A dredging apparatus is afforded having the improvements of a wedge-shaped dredge foot housing both a fluid opening and a filter member, the intake opening being located on the underside of the dredge foot and the filter member being located above the fluid intake opening so as to be placed between the intake and the suction conduit, the taper of the wedge foot being toward its forward edge and its underside being substantially planar. Also afforded is providing the lower end of the dredge housing with a forwardly directed lever means comprising a lever member capable of being reciprocally moved in order to effect the levering of large objects, thus enabling the location of the intake opening below such objects.