| 摘要 |
An under spray arrangement for toilet bowls and the like, comprising a tube or pipe which is displaceably arranged in a cylinder which can be charged with pressurized water and is movable against the restoring force of a spring arrangement from a rest position into a work position. This tube or pipe, in order to form a piston, is closed at one end and is sealed with respect to the inner wall of the cylinder by seal means bearing with pressure at the cylinder wall. In the work position the part of the space or compartment of the cylinder which contains the pressurized water is connected with the internal space of the tube by means of a channel surrounding the seal means.
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