| 摘要 |
A telescoping support bar installed in a shower enclosure and similar facilities requires no mechanical wall fasteners. The support bar includes telescoping tubes with end retainers gripping walls of the enclosures. Length of the support bar is governed by fixed length spacer means and internal extensible means. Extensible means, having bearings movable along a rod, provides the lengthening and shortening of the support bar as the distance between the bearings is increased or decreased. This change in distance likewise changes the overall length of the support bar. With the retainers snug against the walls, one of the tubes, being rotatable, is turned in circular motion. This rotation is converted into an axial force along the bar causing the retainers to forcefully grip the walls, providing a rigid and strong bar installation.
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