Abstract: A support assembly supports a hub coupled to a crossbar. The hub adjustably supports a sprinkler, e.g., in a ceiling. Clamp assemblies are arranged and clamped on opposite sides of the crossbar to couple the support assembly to span two parallel T-bars of the ceiling. The clamp assembly comprises a carriage, a clamp, and a saddle. The carriage defines a tab comprising a first aperture and a back panel defining a second aperture adapted to support the crossbar, the hub, and the sprinkler. A lateral section of the carriage extends between the tab and the back panel. The lateral section comprises a pivoting slot and a bent end. The clamp comprises projections, a void, and a bent clasp. The saddle comprises a stem interposed between first and second flanges with orifices adapted to support the crossbar and align with the apertures in the carriage.

Abstract: An improved spray gun having an aluminum gun body and a sprayhead made of a plastics material, preferably of polybutylene terephthalate. The sprayhead is permanently secured to the spray gun body, preferably with a swaged ring of stainless steel. The spray gun may be provided with a plastic handle which is preferably formed from polybutylene with 10% of a polyester elastomer. In one embodiment, the sprayhead is oriented relative to the gun body prior to securing to select either gravity feed or suction feed for the sprayed fluid.