Abstract: An auto-reversible toilet seat mounting structure is constructed to pivotally fasten a toilet seat to a bracket at the rear side of a toilet bowl for enabling the toilet seat to be turned relative to the toilet bowl between a vertical position and a horizontal position and automatically returned to the vertical position by means of circulation of steel balls between two chambers in each coupling device after each use of the toilet by the user.

Abstract: A detachable toilet seat mounting structure is constructed to include a pivot shaft horizontally provided at a mounting plate at the top of a toilet bow, the pivot shaft having two reduced portions, and two knuckles provided at the rear side of a toilet seat for coupling to the pivot shaft to detachably pivotally secure the toilet seat to the mounting plate at the toilet bowl.

Abstract: An auto-reversible toilet seat mounting structure is constructed to pivotally fasten a toilet seat to a bracket at the rear side of a toilet bowl for enabling the toilet seat to be turned relative to the toilet bowl between a vertical position and a horizontal position and automatically returned to the vertical position by means of circulation of steel balls between two chambers in each coupling device after each use of the toilet by the user.

Abstract: An automatically raised toilet seat apparatus is provided. The toilet seat apparatus includes a toilet seat portion and a pair of box portions. The body of each box portion forms a closed space which contains a liquid and defines a plurality of tank compartments. Baffles separate at least some of the tank compartments. The liquid's adaptive distribution between tank compartments facilitates the toilet seat portion's gradual displacement between lowered raised positions, biasing the toilet seat portion to one of those positions. In certain cases, a pair of shallow holes and a pair of deep holes are formed into the toilet seat portion, for adjustably receiving the box portions, depending on the size of the given toilet's water tank.

Abstract: An automatic raising closestool seat, comprising a closestool seat and two boxes, wherein the body of said box forming a closed space which used baffles divided into several tanks and filled liquid into said tanks, said tanks filling liquid into so that said closestool seat raising by slowly; two relatively shallow holes and two relatively deep holes being installed both side of closestool seat, said two boxes do not one-shot design with closestool seat, hollow body of said box, wherein said two box being installed said shallow holes or deep holes by the width of the water tank of closestool.