Patent ID: 7284567

Claim:
A liquid level controller comprising: a housing having an upper and lower section, said upper section being adapted to be detachably connected to a liquid supply, and wherein a portion of said lower section is adapted to be submerged within a liquid the level of which is to be maintained; a pressure chamber within said upper section, said pressure chamber having a hole to provide liquid communication between the said pressure chamber and an inner part of the lower section of the said housing; a seal made of resilient material having a bore there through; an inlet tube having an outlet and extending from the liquid supply to said bore; said seal located between the inlet tube outlet and the pressure chamber; an outlet tube within said lower section of said housing; a displacer slidably along said outlet tube; a valve assembly for controlling liquid flow, said valve assembly including a control valve and a control pin having one end attached to the control valve and another end coupled to said displacer, wherein said displacer acts as a weight movable to tip said control pin and said control valve to open said control valve when a liquid level is below a level to be maintained, and wherein said displacer floats to remove tipping of the control pin and control valve to close said control valve when the liquid level to be maintained is reached; wherein said lower section of said housing includes a controller and a thread having one end connected to said controller and another end extending through said control pin and to said displacer for enabling adjustment of a preferred liquid level.