Patent ID: 8746590

Claim:
A riser assembly for use with a sprinkler, the assembly comprising: a container at least partially defining therein a reservoir configured to contain a pressurized fluid, the container further defining a fluid inlet opening to the reservoir and a fluid outlet opening from the reservoir, the fluid inlet, reservoir, and fluid outlet defining a fluid path through the container; and a conduit circumscribing a channel occupiable by a signal carrier, the conduit including: an intermediate conduit portion passing at least partially internal to the fluid path in the reservoir, the intermediate conduit portion excluding the channel from the fluid path within the reservoir; a first conduit portion operatively connected to the intermediate conduit portion and disposed through the container to a signal carrier entry area outside the container; and a second conduit portion operatively connected to the intermediate conduit portion and disposed through the container to a signal carrier exit area outside the container, the channel being configured to pass a signal carried by the single carrier from outside the container to a signal processor situatable outside the container, the signal processor being operatively connectable to a control valve operatively connectable to the sprinkler and configured to selectively control expulsion of fluid from the pressurized fluid through the sprinkler in response to the signal carried by the signal carrier and received by the signal processor.