Patent ID: 6834399
Filing Date: 2004-12-28
Classification: E03D

Abstract:
A pressure vessel adapted for providing water to wash a toilet bowl comprising:a tank portion for preserving water, an outlet being defined at a bottom of the tank portion for draining water, and a through hole being defined at a top of the tank portion and corresponding to the outlet; and a drain mechanism including: a hollow pipe with a top fixed on the through hole of the tank portion, a separating plate extending horizontally from an inner side and near a top of the hollow pipe, an actuator being assembled on a top of the separating plate for manual operation and having a first resilient element mounted therein, at least a pivot element pivotably connecting with the actuator and mounted between the separating plate and the actuator, each pivot element forming an anchor at a lower end thereof; a pole extending longitudinally through interior of the hollow pipe, and forming a flange at a top thereof, at least a groove being defined near the flange for latching the anchors, a drain tube being mounted on a bottom of the pole and having a top projection near a top thereof, a plurality of drain holes in the bottom thereof and a tapered projection at substantially a middle thereof for abutting against the tank portion thereby closing the outlet; and a resisting ring being mounted on the top projection of the drain tube and forming a crinkle portion on a center thereof, the resisting ring having an outer rim fixedly retained between a lower portion of the hollow pipe and a lock cover of the top projection, a biasing ring being mounted on a top of the drain tube for pressing against an inner rim of the resisting ring.