Patent ID: 9613504
Date: 2017-04-04
CPC Classifications: G08B

Claim:
1. A hand held alerting sound generator device for broadcasting sounds into the interior of a building to signal to an occupant that a visitor is at a door of the building who is seeking to make contact with an occupant, comprising: a casing of a size able to be gripped by one hand of a user; a transducer held by said casing, said transducer having an exciter feature able to be held in contact against an exterior surface of a member of said building by a user while gripping the casing; said exciter feature being vibrated in correspondence to audio signals from an audio signal source by operation of said transducer, whereby said exciter feature when held against said external surface of said building member, causes said building member to correspondingly resonate and thereby broadcast sounds corresponding to said audio signals into said interior of said building.