Abstract: By providing a gear assembly employing drive gears which engage at least two associated gears for simultaneous rotation, with the gear assembly being constructed for axially driving the bush-bearing shaft/cable member, a new fully automatic, portable tube/conduit cleaning system is attached, with the components forming the system being capable of being easily held and carried to any desired job site. By employing this construction, the cleaning system of the present invention enables the shaft/cable carrying the rotating brush to be driven in both a forward and reverse direction, along the axis of the tube or conduit, making it easier for an operator to clean extremely difficult pipes and conduits, while also controlling the relative speed of the brush rotation. In the present invention, the elongated flexible shaft/cable is controllably fed at a low rate of speed, while the cleaning brush is rotated at a relative very high rate of speed, thereby achieving superior cleaning results.

Abstract: A shielding assembly for use in a semiconductor manufacturing apparatus, such as an ion implantation apparatus, includes one or more removable shielding members configured to cover inner surfaces of a mass analyzing chamber. The shielding assembly reduces process by-products from accumulating on the inner surfaces. In one embodiment, a shielding assembly includes first and second shielding members, each having a unitary construction and configured to cover a magnetic area in the mass analyzing chamber. The shielding members desirably are made entirely of graphite or impregnated graphite to minimize contamination of the semiconductor device being processed caused by metal particles eroded from the inner surfaces of the mass analyzing chamber.

Abstract: A moldable composite sheet having improved thermal and mechanical property characteristics. In one aspect, the composite sheet may be a porous fiber-reinforced thermoplastic resin comprising discontinuous mineral reinforcing fibers, and one or more skin layer materials. Generally, the composite sheet may have a void content or porosity from about 5% to about 95% by volume of the sheet, an areal weight between about 400 g/m2 to about 4000 g/m2 (gsm), a mineral fiber content from about 20% to about 80% by weight, and a thermoplastic resin content from about 20% to about 80% by weight of the composite sheet. The composite sheet can be molded via low pressure processes, such as thermoforming, match metal molding on stops, vacuum forming and pressure forming, to produce durable automotive interior trim parts and construction articles having improved thermal and mechanical properties in addition to other beneficial characteristics.

Abstract: A moldable composite sheet having enhanced sound absorption characteristics and attenuation of transmitted sound intensities. In one aspect, the composite sheet may be a porous fiber-reinforced thermoplastic comprising discontinuous reinforcing fibers, expandable polymeric beads such as microspheres, and, optionally, one or more thermoplastic skins. Generally, the composite sheet may have a void content or porosity from greater than 0% to about 95% by volume of the sheet, an areal weight between about 400 g/m2 to about 4000 g/m2 (gsm), a fiber content from about 20% to about 80% by weight, and an expandable polymeric bead content from greater than 0 gsm to about 25 gsm. The composite sheet can be molded via low pressure processes, such as thermoforming, match metal molding on stops, vacuum forming and pressure forming, to produce durable automotive interior trim parts and construction articles having enhanced sound absorption capabilities in addition to other beneficial characteristics.

Abstract: A composite material is provided in which certain properties, or combinations of properties, are improved relative to similar comparative composite materials. The composite material generally comprises a fiber reinforced thermoplastic core that includes a thermoplastic resin and discontinuous fibers dispersed within the thermoplastic resin. The fibers are particularly subject to certain conditions, namely a content of about 15 wt. % to about 65 wt. % of the thermoplastic core, a diameter of from about 17 ?m to about 22 ?m, and a length of from about 17 mm to about 25 mm.

Abstract: A shielding assembly for use in a semiconductor manufacturing apparatus, such as an ion implantation apparatus, includes one or more removable shielding members configured to cover inner surfaces of a mass analyzing chamber. The shielding assembly reduces process by-products from accumulating on the inner surfaces. In one embodiment, a shielding assembly includes first and second shielding members, each having a unitary construction and configured to cover a magnetic area in the mass analyzing chamber. The shielding members desirably are made entirely of graphite or impregnated graphite to minimize contamination of the semiconductor device being processed caused by metal particles eroded from the inner surfaces of the mass analyzing chamber.