Water supply control assembly with automatic shut-off and duty cycle reset

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;
• a controller including a timing motor and a reverse motor for operating a main timing gear, the controller advancing rotation of the main timing gear to actuate the valve to a water shut-off condition in response to a continuous flow of pressurized water for an elapsed flow time in excess of a preset duty cycle limit;
• a first switch coupled to the controller, the first switch sensing the magnetic field of the magnet and then turning ON in response to the magnetic field in order to signal the advancement of the rotation of the main timing gear;
• a second switch coupled to the controller, the second switch sensing the magnetic field of the magnetic and then turning ON in response to the magnetic field in order to signal the resetting of the rotation of the main timing gear to the full duty cycle service value,
• the controller including a first toggle arm carried on the main timing gear to open a normally closed forward limit switch to remove operating voltage from the timing motor upon complete closure of the valve;
• 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;
• and
• the magnet being moved into and out of magnetic field coupling proximity to the first switch and the second 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.

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;
• a controller including a timing motor and a reverse motor for operating a main timing gear, the controller advancing rotation of the main timing gear to actuate the valve to a water shut-off condition in response to a continuous flow of pressurized water for an elapsed flow time in excess of a preset duty cycle limit;
• sensing means coupled to the controller for sensing, by way of the position of the magnet, the onset and termination of pressurized water flow through the water flow sensing unit from the distribution conduit to the water demand load;
• the controller including a first toggle arm carried on the main timing gear to open a normally closed forward limit switch to remove operating voltage from the 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 the reverse motor at the same time as the forward limit switch is opened.