Abstract: A blade is provided for use in a blender wherein the blade is to rotate about a vertical axis of rotation. The blade is formed with a central hub portion defining a horizontal plane, and in a preferred arrangement, has four tines extending outwardly from said hub portion with each tine angularly spaced at 90.degree. to two adjacent tines to form two opposed pairs of tines, however, with the tines being arranged asymmetrical to one another. In order to reduce vibration and torque occasioned by the asymmetrical arrangement of the tines, each tine in an opposed pair is formed to be balanced to the other tine with respect to a first product of its mass times a distance of its center of mass from the center of rotation and with respect to a further product of its mass times a distance of its center of mass from the axis of rotation and times a distance of its center of mass from the horizontal plane.

Abstract: An exhaust duct cooling system is provided for a built-in gas oven wherein cool air is drawn into the oven enclosure and through an oven controls area to cool that area, and then the cool air is directed into a cool air duct which is positioned between the oven cooking cavity and an oven exhaust duct to thermally isolate the controls area while cooling the oven exhaust. The cool air duct has a first, lower outlet below the oven controls, and a second, upper outlet adjacent to an outlet of the oven exhaust duct where cool air and oven exhaust are mixed in a chamber prior to exiting the oven cabinet. Thus, the oven exhaust is tempered prior to being exhausted from the front of the oven.