DRAIN VALVE FOR TOILET BOWL Russian patent published in 2012 - IPC E03D11/10 

FIELD: personal use articles.

SUBSTANCE: toilet bowl comprises a cup with a drain hole, a siphon, a valve. The siphon is communicated along the flow with the drain hole. The valve is installed as capable to control the flow from the drain hole into the siphon. The valve comprises an insert block, the first body, the second body and the rotary lock. The second body is connected with the first body to form a cavity between them. The rotary lock is installed in the cavity as capable of displacement between the first position, which substantially shuts off the flow through the drain hole, and the second position providing the flow from the drain hole into the siphon. In the cavity there is a groove arranged along one of its walls. When the rotary lock is in the second position, a part of the rotary lock is installed in the groove. The first body is connected to the second body along the plane, which is approximately parallel to direction of the flow via the insert block. According to the second version, the valve provides for flow trajectory, which deviates from the substantially vertical trajectory near the drain hole of the cup to the trajectory, being at least partially horizontal. According to the third version, the rotary lock has a curvilinear contour. In the siphon channel there is a groove arranged along one of its walls. The groove has a curvilinear contour, which follows the rotary lock contour.

EFFECT: design makes it possible to increase efficiency of water flushing.

9 cl, 11 dwg