| 摘要 |
An improved recessed sprinkler head including a frame having a base portion with an outlet to be connected to a source of water under pressure. The frame also includes a pair of curved arms which extend outwardly from the base portion and are connected together at a junction. The outlet is normally enclosed by a cap which is retained in position by a releasable mechanism that includes an element arranged to release when the sprinkler head is exposed to a predetermined elevated temperature. A disc-like support member having a central aperture of sufficient size to receive the arms of the frame is slipped upwardly over the frame after the sprinkler head is connected to the water line, and the support member includes a pair of opposed flexible resilient tabs that are adapted to engage an abutment on the base portion of the frame. An annular sleeve is positioned outwardly of the frame, and the lower end of the sleeve defines a decorative ring. Biasing means, such as a compression spring, is interposed between the support member and the sleeve to urge the decorative ring upwardly against the ceiling of the building and to permit the ring to float in accordance with relative movement between the water system and the ceiling.
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