Abstract: This invention relates to a type of paper clip known as a binder clip. Binder clips are a class of clips -suitable for binding together thicker stacks of paper or other thin sheets, up to a stack ? inch thick, or approximately 125 sheets. Typical binder clips currently available on the market are comparably bulky and heavy, and add thickness above the height of a stack. As an improvement, this invention has a quite flat, low and compact configuration and is light in weight, which overcomes these typical problems. Additionally, it can provide a flat surface to accommodate writing or advertising graphics.

Abstract: An extruder for thermoplastics having a directly motor-driven high-speed feed screw which mechanically force-feeds raw plastic pellets, pushing them forward under high pressure into a heat-transfer zone for melting, and finally through a static mixer, to deliver a pressurized homogeneous melt to an extrusion die. Melt pressurization results entirely from the mechanical force-feeding action of the screw rather than through the viscous shear action found in conventional screw extruders.

Abstract: A combined foot and hinge for a folding chair, stool, or table frame comprising a one-piece part molded of a self-hingeable thermoplastic material having rod sockets with foot pads joined together with a flexure web.