Patent ID: 8505383
Filing Date: 2013-08-13
Classification: B60R,G01V,Y10T

Abstract:
1. An acoustic sensor system for use in a patron restraint system having a locking assembly, comprising: an acoustic emitter for emitting acoustic energy; an acoustic detector for sensing said acoustic energy and outputting a detection signal in response to said acoustic energy; and a plurality of movable alignment elements interposed between said acoustic emitter and said acoustic detector, each of said plurality of movable alignment elements including an acoustic aperture extending therethrough, said plurality of movable alignment elements being slidably mounted in the locking assembly to be movable into and out of alignment with each other and with each of said acoustic emitter and said acoustic detector such that when each said acoustic aperture is moved into alignment with said acoustic emitter and said acoustic detector and in alignment with each other acoustic aperture, said acoustic energy from said acoustic emitter is received by said acoustic detector.