Abstract: Improved dental wedges having gritty top layers are disclosed that enable instruments to easily engage the dental wedges and position them between the two teeth. The wedges may have gritty layers that are positioned on their proximal ends through use of an adhesive or by molding techniques. Each gritty top layer includes a grit material such as aluminum dioxide and an attachment material such as acrylics.

Abstract: A system for dispensing coreless rolls of product.

Abstract: An adapter for converting a core roll product dispenser into a dispenser for a coreless roll product having a pair of depressions defined in the ends of the coreless roll.

Abstract: A method of fabricating a spline drive including the steps of providing an elongated rod of indeterminate length having axially extending splines thereon, cutting a cylindrical member of predetermined length from the elongated rod, turning the cylindrical member at its end to provide splines of reduced height and shoulders at the junctions of the reduced splines and the original splines, broaching a washer to provide an internal surface of complementary mating relationship to the turned end of the cylindrical member, mounting the washer on the turned end with the side of the washer abutting the shoulders, laser-welding the washer to the cylindrical member, and brazing a drum to the washer.

Abstract: A spinning and twisting ring and holder combination including a spinning and twisting ring having an inner ring surface, an outer ring surface, and a central ring portion therebetween, an annular lubricant conduit in the central ring portion, an annular groove in the outer ring surface, a holder having an inner holder surface and an outer holder surface and a holder block extending outwardly from the outer holder surface, the inner holder surface being mounted in fluid-tight relationship with the outer ring surface to cause the annular groove to be fluid-tight, a plurality of radial bores extending between the annular groove and the inner ring surface and in communication with the annular conduit, a well in the holder block, a first wick extending through conduits in the holder block and the well and having a portion located in the outer ring groove, and second wicks having portions located in engagement with the first wick in the annular groove and having second portions extending through the radial bores an