Abstract: An oscillating vane actuator for active control of fluid flow over a surface includes a pivoted vane surrounded by a wedge-shaped chamber, and first and second conduits with openings adjacent the surface. The actuator also includes a rotating shaft with a connecting rod to actuate the vane in a oscillatory manner. As the vane travels in one direction, fluid is forced out from the chamber through the first conduit and opening into the fluid stream adjacent the surface, while fluid is simultaneously drawn in through the second opening and conduit into the opposite side of the chamber. Similarly, when the vane travels in the opposite direction, fluid is forced out through the second conduit and opening into the fluid stream adjacent the surface, while fluid is simultaneously drawn in through the first opening and conduit.

Abstract: A tool box section and a cooler section are integrally formed as one device. The toolbox portion is a typical tool box having a plurality of stacking tool trays with a latching means for securing said trays together. The stacked and latched tool trays thereby form the upper portion of the toolbox section. The lower portion forms a rectangular box having an open face and a half open top. Carried by approximately half of the lower portion, in the open top area, are a plurality of sliding tool drawers that slide open through the open face of the lower portion of the toolbox section. Carried by approximately the other half of the lower portion is the cooler section. The cooler section comprises a hinged lid having a cavity opposite the hinged end for inserting fingers to facilitate lifting of the lid. The cooler section slides in and out of the lower portion via a well known means such as a tongue-and-groove, protrusion-and-track, or wheel-and-track arrangement.

Abstract: A turbine-driven sander includes a minimum of one-piece sealed housing members so interconnected as to form a nozzle, a turbine chamber, and a valve chamber. A plurality of elongated support members are integrally formed on a housing member. Fasteners are inserted in the elongated support members to clamp the housing members together. A flap valve mounted in the valve chamber opens the turbine chamber to a source of vacuum, thereby driving a turbine rotatably mounted in the turbine chamber. This rotation in turn vibrates a platen through a direct-drive system. The platen is supported upon one of the housing members by two platen support members. A noise attenuation system at the front end of the housing includes a two-passage nozzle which is curved to interrupt the line of sight from a turbine air inlet to the turbine. A side branch resonator communicates with the nozzle via noise-attenuating holes in a cover plate located above the nozzle.