LOCKING MECHANISM, PREFERABLY FOR FLUSHING TANK OF LAVATORY PAN Russian patent published in 2006 - IPC E03D1/34 

FIELD: sanitary equipment, particularly press-button flushing tanks.

SUBSTANCE: locking mechanism comprises post with guides for overflow pipe, overflow pipe with collar coaxially connected to the pipe, collar lifting units and collar retaining means, which holds the collar during water discharge. The collar retaining means is made as valve installed in overflow pipe and spring-loaded relative the pipe. The valve is retained in closed position when the tank is filled with water. The valve is installed in lower part of overflow pipe and may cooperate with face created in overflow pipe end by working edge thereof.

EFFECT: reduced weight and size of locking mechanism, increased service life and reliability.

2 cl, 1 dwg