| 摘要 |
<p>System for automatically placing rings of protective material onto the seat of a WC, each time this WC is used, characterised in that it is essentially composed of a container containing a certain number of protective rings housed in the "lid" portion of the flap-seat of the WC, and mechanical means for depositing an individual protective ring taken from the said container onto the seat, these means being connected to the flap-seat so as to come into operation with each lowering manoeuvre of the said seat.</p> |
