Patent ID: 8210177
Filing Date: 2012-07-03
Classification: A61M,Y10T

Abstract:
1. A valve for controlling the level of liquid within a chamber, the valve comprising a liquid inlet and a primary float that is movable in response to a change in the level of liquid within the chamber between an open configuration in which liquid is able to flow through the liquid inlet into the chamber when the liquid within the chamber is below a predetermined acceptable level, and a closed configuration in which liquid is prevented from flowing through the liquid inlet into the chamber when the liquid within the chamber is at or above the predetermined acceptable level, wherein the valve includes a secondary float that is movable in response to an event when the primary float fails to move to its closed configuration resulting in an increase in the level of liquid within the chamber above the predetermined acceptable level from an inoperative configuration to an operative configuration in which the secondary float engages the primary float directly to impart a force upon the primary float that urges the primary float towards its closed configuration.