Abstract: This invention relates to lateral transfer retroreflectors having a tubular member comprised of a material having dimensions which are relatively stable with respect to temperature. The retroreflector is further comprised of a roof mirror having two reflective surfaces mounted to one end of the tubular member at three coplanar mounting surfaces of the roof mirror. Mounted on the opposite end of the tubular member is a mirror panel having a reflective surface which is perpendicular to both of the reflective surfaces of the roof mirror. The tubular member has openings for light to pass through and thereby reflect off of the roof mirror and the mirror panel. One of the openings increases the effective aperture of the lateral transfer retroreflector.

Abstract: A machine for making ice cream and the like, having a receptacle for receiving liquid ingredients to be used for making the ice cream. A mixing chamber is provided which has an egress from which the ice cream exits. A cooling chamber surrounds the mixing chamber. A rotor centrally mounted in the mixing chamber atomizes and mixes the liquid ingredients and moves it through the mixing chamber to its egress. The rotor has a central post and outwardly projecting blades. A conduit feeds the liquid ingredients from the receptacle to the central post of the rotor. An outlet port on the central post is provided, through which the liquid ingredients are ejected outwardly from the central post for action by the blade means. A pull down screw arrangement helps pull down the liquid ingredients from the receptacle to the mixing chamber.