초록 ▼

A system for use with a normally open manually actuated water valve, or any other suitable manually actuated device, for automatically closing the valve, or device, upon sensing water. The system includes at least one water sensor electrically connected to a motorized actuator mounted on the valve,

A system for use with a normally open manually actuated water valve, or any other suitable manually actuated device, for automatically closing the valve, or device, upon sensing water. The system includes at least one water sensor electrically connected to a motorized actuator mounted on the valve, or device, whereby a signal is transmitted either by electrical conductor, or in an alternate embodiment by RF transmission, to the motorized actuator upon sensing water, whereby said manual valve is automatically actuated to its closed position. The system may be installed on an otherwise conventional manual shut-off valve, without replacing the valve or otherwise interrupting flow through the valve.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for use with an existing manual water valve having a rotatable valve stem, said apparatus for preventing water damage by automatically closing the water valve upon sensing water leaking from a source downstream from the water valve, said apparatus comprising:

[ What is claimed is:] [1.] An apparatus for use with an existing manual water valve having a rotatable valve stem, said apparatus for preventing water damage by automatically closing the water valve upon sensing water leaking from a source downstream from the water valve, said apparatus comprising:at least one water sensor, said at least one water sensor including a pair of spaced conductors forming a normally open electrical switch, said apparatus including resistance measuring circuitry whereby a uniform body of water bridging a gap between said spaced conductors completes an electrical circuit;means for rotationally actuating said manual valve connected to said valve stem by a connector, said connector formed about a connector axis and having an end defining an aperture which is coaxial with said axis, said connector aperture terminating at a concavely tapered surface for aligning said valve stem in axial alignment with said connector axis, said means for rotationally actuating electrically connected to said at least one water sensor and responsive to said electrical switch such that said means for actuating causes rotation of said valve stem for closing said valve upon completion of said electrical circuit.