Abstract: A welded electrical connection includes an aluminum electrical conductor welded to a copper electrical conductor. The copper electrical conductor and the aluminum electrical conductor form a butt joint, A ferrule is over the butt joint and attached to the copper electrical conductor and the aluminum electrical conductor. The ferrule is not directly attached to welded portions of the copper electrical conductor and the aluminum electrical conductor. In some embodiments, weld flash is between the butt joint and the ferrule.

Abstract: The present invention provides an electronics case including a housing having at least one sidewall having an air passage, wherein the air passage includes an intake and an exhaust; a heat producing structure contained by the housing; and at least one heat pipe in conductive communication with the heat producing structure and the sidewalls having the air passage. The air passage within the sidewall produces a chimney effect that vents heated air from the housing. The chimney effect may be produced by a sidewall having a fluted sidewall.

Abstract: A fill tube assembly is for a casting mold. The fill tube assembly includes a fill tube having a tubular member with a receiving end, a mold-engaging end and an intermediate portion. The mold-engaging end has a tapered flange radially extending therefrom, the remainder of the tubular-member has a substantially uniform cross-section. A clamping assembly is structured to maintain a substantially leak-proof seal at the fill tube, casting mold interface while accommodating dimensional variations. The clamping assembly includes a gasket, a load ring, a clamping plate and a pre-load gap between the clamping plate and the casting mold and optionally includes a dimensional compensating ring. When tightened, the clamping plate biases the load ring against the flange thereby distributing a uniform load against the casting mold, compressing the gasket therebetween while narrowing the pre-load gap to accommodate dimensional variations. A method of use is also disclosed.