Abstract: A wireless slip ring assembly includes inner and outer subassemblies mounted together for undergoing rotation relative to one another. The inner subassembly includes a sleeve composed of axially spaced annular slip rings and a printed circuitboard mounted within the sleeve having spaced longitudinal sides connected at longitudinal edges and spaced conductive paths defined on the longitudinal sides and extending to the edges. The conductive paths are spaced from interior sides of the slip rings except at the longitudinal edges of the circuitboard, where each conductive path is electrically and rigidly connected to one slip ring.

Abstract: A container for use with electrostatic sensitive electronic components comprises a box-like carton whose exterior and interior surfaces are coated with a material forming a substantially continuous conductive path. A liner of convoluted foam impregnated with a conductive material is secured to the interior surfaces of the lid and the bottom of the box-like carton, the impregnated conductive material forming a continuous conductive path with the conductive coating.

Abstract: In an improved oscillating arm mechanism including a fluid engaging member for contact with a fluid sprinkler stream to move a distal portion of the member into and away from the fluid stream. The fluid engaging member includes at least two surfaces on its distal portion for moving the member into and away from the fluid stream. A walling surface is used to wall the member onto the stream and for driving the member further into the fluid stream. A repelling surface is used to provide a disengaging or repelling force to drive the member out of the stream and to begin another cycle of operation. Further, the fluid engaging member provides an exit channel means on the side opposite the two or more surfaces of the device to allow maximum fluid flow of the fluid stream to continue its original direction during engagement and disengagement of the member and the fluid stream.

Abstract: A one-piece flexible guard for excluding dirt and other foreign matter from the internal parts of a pop-up sprinkler. More particularly, a flexible circularly shaped piece of material which can be attached to the edge of the fixed housing assembly of a pop-up sprinkler. Said material having a circular hole in its center in which the pop-up sprinkler protrudes, said movable part being securely attached to said material along the edge of said circular hole. The guard being attached to the sprinkler in such a way so as to exclude foreign matter from the internal parts of the sprinkler while permitting the movable nozzle portion free vertical or horizontal movement. In an up position the outer perimeter of the guard forms a dam. The sprinkler also may provide fluid to wash the dirt from outside of the dam portion of the guard when the nozzle is in the extended or up position.