Patent ID: 8100141
Filing Date: 2012-01-24
Classification: E03B,F16K,G01F,G05D,Y02A,Y10T

Abstract:
1. A water supply control assembly for cutting off the supply of water to a house or building in the event of excessive water consumption, the water supply control assembly comprising: a valve secured to a distribution conduit in series flow communication with a pressurized source of fluid; a water flow sensing unit secured to a water demand load, the water flow sensing unit including an inlet port and a flow discharge port connected in series flow communication with the distribution conduit and the water demand load; a magnet mounted to a displaceable member, the displaceable member moveably secured within the water flow sensing unit between the inlet port and the flow discharge port; the magnet being moved into and out of magnetic field coupling proximity to a timing reed switch in response to the onset and termination of pressurized water flow through the water flow sensing unit from the distribution conduit to the water demand load; the timing reed switch sensing the magnetic field of the magnet and then turning ON in response to the magnetic field; a controller coupled to the timing reed switch, the controller, in response to the timing reed switch, configured to actuate the valve to a water shut-off condition in response to the timing reed switch reading a continuous flow of pressurized water for an elapsed flow time in excess of a preset duty cycle limit; the controller including a first toggle arm carried on a main timing gear to open a normally closed forward limit switch to remove operating voltage from a main timing motor upon complete closure of the valve; and the controller including a second toggle arm carried on the main timing gear to open a normally closed reverse limit switch, to remove operating voltage from a reverse motor at the same time as the forward limit switch is opened.