Abstract: A rotating spray nozzle, comprising an elongate stem securable to a liquid-supply pipe, the stem defining a passageway therethrough for communicating a liquid from the supply pipe, the passageway communicating at least one inlet opening and at least one outlet opening defined in the stem; and a polymer nozzle body freely rotatably mounted on the stem for rotation about a nozzle axis, the nozzle body having an internal cavity in communication with the at least one outlet opening of the stem, and at least one nozzle defined through the nozzle body and communicating with the internal cavity, the at least one nozzle being offset from the nozzle axis to impart a driving couple to the nozzle body to cause rotation thereof when a liquid from the supply pipe is communicated through the at least one nozzle. The stem defines a longitudinal portion bounded at opposite ends thereof by integral annular shoulders having diameters greater than the longitudinal portion.

Abstract: A rotating spray nozzle, comprising an elongate stem securable to a liquid-supply pipe, the stem defining a passageway therethrough for communicating a liquid from the supply pipe, the passageway communicating at least one inlet opening and at least one outlet opening defined in the stem; and a polymer nozzle body freely rotatably mounted on the stem for rotation about a nozzle axis, the nozzle body having an internal cavity in communication with the at least one outlet opening of the stem, and at least one nozzle defined through the nozzle body and communicating with the internal cavity, the at least one nozzle being offset from the nozzle axis to impart a driving couple to the nozzle body to cause rotation thereof when a liquid from the supply pipe is communicated through the at least one nozzle. The stem defines a longitudinal portion bounded at opposite ends thereof by integral annular shoulders having diameters greater than the longitudinal portion.

Abstract: Typical road surfaces are concrete, and gravel filled asphalt. They are very abrasive to fabrics that slide on those surfaces. For the new side impact curtain-type airbag, in a rollover situation, the airbag needs to protect the occupant from directly contacting the road hazard and should not deflate quickly or break when sliding on such road surfaces. We have found that a layer of elastomer can provide much better abrasion resistance than a layer of heavy industrial fabric. A Jacquard bag coated with 1.2 oz/yd2 polyurethane showed significant increase in air leakage rate after 5 cycles of concrete sliding abrasion. A 3 mil thick polyurethane film was laminated to the coated Jacquard woven airbag. After 110 cycles of sliding abrasion using the same concrete, no visual damage or change In bag leakage was observed. This finding indicates surprisingly better abrasion resistance of a thin elastomer film than a heavy industrial fabric.