# US 10,121,336 B2 · Merchandise security system with sound chamber > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,336 B2 - Document ID: US10121336B2 - Status: Granted - Kind: B2 - Application number: 16/002,450 - Filed: 2018-06-07 - Published: 2018-10-04 - Granted: 2018-11-06 - Earliest claimed: 2015-11-20 - Assignees: InVue Security Products Inc. - Applicants: InVue Security Products Inc. - Inventors: Kirk Burmeister, II - Web page: https://patentgrep.com/patent/US10121336B2 ## CPC - G08B 13/1463: {Physical arrangements, e.g. housings (devices to prevent theft or loss of purses, luggage or hand carried bags A45C13/18)} - G08B 3/10: using electric transmission; using electromagnetic transmission - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract Embodiments of the present invention are directed to security systems for securing an item of merchandise from theft or unauthorized removal. For example, the security system may include a sensor configured to be coupled to the item of merchandise and a base configured to removably support the sensor and the item of merchandise thereon. The base includes a sidewall and a bottom surface, and the sidewall defines an opening. The security system also includes an alarm configured to generate sound in response to a security event. The alarm includes a sound chamber configured to direct sound exiting the sound chamber towards the opening in the sidewall. ## Claims ### Claim 1 A security system for securing an item of merchandise from theft or unauthorized removal, the security system comprising: a base configured to removably support the item of merchandise thereon, the base comprising an opening; and an alarm configured to generate sound in response to a security event and direct the sound out of the opening in the base, the alarm comprising a sound chamber, wherein the sound chamber comprises a cap coupled to a chamber and an opening defined in the chamber for allowing sound to exit the chamber, wherein the cap is disposed at an angle relative to a bottom surface of the chamber, and wherein the cap is configured to resonate for generating sound, and wherein the chamber is configured to direct the sound towards the bottom surface of the chamber in a first direction and out of the opening of the chamber in a second direction that is different than the first direction. ### Claim 2 (depends on 1) The security system of claim 1, further comprising a sensor configured to be coupled to the item of merchandise. ### Claim 3 (depends on 2) The security system of claim 2, further comprising a cable connected to the sensor and the base and configured to define a sense loop. ### Claim 4 (depends on 2) The security system of claim 2, wherein the alarm is operably engaged with the cable and is configured to generate an alarm signal when the item of merchandise is removed from the sensor or the sense loop is interrupted. ### Claim 5 (depends on 2) The security system of claim 2, further comprising a cable connected to the sensor, wherein each of the sensor and an end of the cable comprises an optical transceiver, and wherein the optical transceivers are configured to communicate optical signals with one another to detect removal of the sensor from the cable. ### Claim 6 (depends on 5) The security system of claim 5, wherein the alarm is configured to generate an audible alarm in response to an interruption of the optical signals. ### Claim 7 (depends on 1) The security system of claim 1, wherein the alarm is wedge shaped. ### Claim 8 (depends on 1) The security system of claim 1, wherein the cap is disposed at an acute angle relative to the bottom surface of the chamber. ### Claim 9 (depends on 1) The security system of claim 1, wherein the cap is disposed parallel or generally parallel to a center axis of the opening defined in the chamber. ### Claim 10 (depends on 1) The security system of claim 1, wherein the base comprises a sidewall and a bottom surface, and wherein the opening in the base is defined in the sidewall thereof. ### Claim 11 (depends on 10) The security system of claim 10, wherein the chamber does not direct sound exiting the opening of the chamber towards the bottom surface of the base. ### Claim 12 (depends on 1) The security system of claim 1, wherein the cap comprises a piezo element. ### Claim 13 (depends on 1) The security system of claim 1, wherein the cap has a diameter of about 20 mm. ### Claim 14 (depends on 1) The security system of claim 1, wherein the cap is circular in shape. ### Claim 15 (depends on 1) The security system of claim 1, wherein the cap is disposed at an angle of about 15-20 degrees relative to the bottom surface of the chamber. ### Claim 16 (depends on 1) The security system of claim 1, wherein the alarm is housed within the base. ### Claim 17 (depends on 1) The security system of claim 1, wherein the first direction and the second direction define an angle of about 90 degrees therebetween. ### Claim 18 (depends on 1) The security system of claim 1, wherein the sound directed in the first direction is configured to be deflected within the chamber to the second direction. ### Claim 19 A method for securing an item of merchandise from theft or unauthorized removal, the method comprising: generating sound with a sound chamber in response to a security event, wherein the sound chamber comprises a cap coupled to a chamber and an opening defined in the chamber for allowing sound to exit the chamber, wherein the cap is configured to resonate for generating sound; directing the sound in a first direction towards a bottom surface of the chamber; and directing the sound in a second direction with the chamber that is different than the first direction out of the opening of the chamber and towards an opening defined in a base housing the sound chamber. ### Claim 20 (depends on 19) The method of claim 19, wherein directing the sound in the second direction does not comprise directing the sound towards a bottom surface of the base.