Abstract: An apparatus for forming a vortex wherein the vortex is typically formed of a fluid injected into a cavity formed in a cup-shaped member. The interior surface of the cup is formed of two discreet sections, a cylindrical section and a hemispherical section. An inlet port provides an ingress for fluid into the cavity. The fluid strikes the hemispherical surface upon entering the cavity and is redirected or diffused such that the fluid forms a vortex. The cylindrical section aids to stabilize the vortex enabling the vortex to extend above the surface of the cup-shaped member prior to degenerating.

Abstract: Assembly of a radiator into the engine compartment of an automotive vehicle is quickly accomplished by raising the radiator with its lower support until projecting pins on the top of the radiator extend through a pair of openings in the upper cross member. A fastener and isolator unit is initially installed on each of the pins so that a lower retainer of the hard plastics main body of each unit inserted through the respective slot is immediately below the lower surface of the cross member while an upper retainer is located above the upper surface of the cross member. Installation is effected by gripping ears on the upper retainer and turning the unit on the pin until camming and positioning surfaces of a neck connecting the upper and lower retainers engage the edges defining the slot while trapping the cross member between the upper and lower retainers to secure the unit thereto.