Patent ID: 8362907
Filing Date: 2013-01-29
Classification: E03D,G01M,G08B

Abstract:
1. A device for in use being vibrationally coupled to a toilet tank of the type having a fill valve therein that automatically refills the toilet tank, the device comprising: an enclosure that in use conducts translational vibrations produced by toilet fill valve refilling, the enclosure being dimensioned and configured to define a resonant cavity therein, the resonant cavity in use supporting sympathetic resonant vibrations excited by the conducted translational vibrations; a transducer disposed within the enclosure and vibrationally coupled to the resonant cavity, the transducer producing a signal responsive to the conducted translational vibrations and the sympathetic resonant vibrations; and wherein the device defines a slot from which a battery pull tab protrudes, the slot opening into the resonant cavity.