| 摘要 |
The assemblies of the invention are suitable for mounting to, or being an integral part of, an animal enclosure such that the height of a valve-controlled liquid outlet may be adjusted according to the changing needs of growing animals. The adjustable liquid delivery assemblies comprise an elongated rail, a liquid delivery unit having at least one liquid delivery head slideably engaged with the elongated rail, a flexible liquid delivery tube for connecting a liquid delivery head to a liquid source, and a means for securing the liquid delivery unit at a selected position on the elongated rail. The liquid delivery system may further comprise a retaining rail. A means for securing the liquid delivery unit at a selected position on the elongated rail may comprise a linear series of holes disposed along the length of the rail, each hole traversing the elongated rail, and a peg configured to pass through a hole of the series of holes and extend beyond the elongated rail to prevent the liquid delivery head from passing beyond the position of the peg. The means for securing the liquid delivery unit at a selected position on the elongated rail can also be a frictional force between the elongated rail and the liquid delivery unit, or between the retaining rail and the liquid delivery unit, a spring, or a spring clamp. The assemblies may further comprise a means to attach the liquid delivery assembly to an animal enclosure such as, but not limited to, securing member having a securing nut and bolt assembly or a spring clamp mounted thereon.
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