In a sanitary device of the bidet type, wherein the cleansing water is warmed in a hot water tank before being ejected for cleansing purpose, the improvement wherein at least a part of the cleansing mechanism is retractable within and extendable without said hot water tank so as to be warm when use thereof...http://www.google.ca/patents/US4123807?utm_source=gb-gplus-sharePatent US4123807 - Retractable bidet
