# US 8,820,243 B2 · Integrated electric match initiator module with isolated lift and burst function for a pyrotechnic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,820,243 B2 - Document ID: US8820243B2 - Status: Granted - Kind: B2 - Application number: 13/374,261 - Filed: 2011-12-19 - Published: 2012-12-06 - Granted: 2014-09-02 - Earliest claimed: 2005-10-05 - Assignees: MagicFire, Inc. - Applicants: Paul McKinley; Phillip Martinez - Inventors: Paul McKinley; Phillip Martinez - Web page: https://patentgrep.com/patent/US8820243B2 ## CPC - F42B 4/00: Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes (signalling by explosives G08B; advertising by fireworks G09F13/46; {signalling by pyrotechnics in railway systems B61L5/20}) - F42B 4/06: Aerial display rockets (rockets in general F42B15/00) - F42C 11/001: {Electric circuits for fuzes characterised by the ammunition class or type (F42C11/02 - F42C11/06 take precedence; mechanical fuzes having electric igniters for hand grenades or marine warheads F42C14/025, F42C14/045)} - F42D 1/055: specially adapted for firing multiple charges with a time delay - F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D) - F42C: AMMUNITION FUZES (blasting cartridge initiators F42B3/10; chemical aspects C06C); ARMING OR SAFETY MEANS THEREFOR (filling fuzes F42B33/02; fitting or extracting primers in or from fuzes F42B33/04; containers for fuzes F42B39/30) - F42D: BLASTING (fuses, e.g. fuse cords, C06C5/00; {for obtaining fluid from wells E21B43/00; for mining or quarrying E21C37/00; for making tunnels or galleries E21D9/006}; cartridges F42B3/00) ## Abstract An electric match assembly for initiating a pyrotechnic device, the electric match assembly comprising an element for connection to a leader carrying the signal; a first electric match component for connection to the lift charge of the pyrotechnic device, the first electric match component connected to the element such that when the element is connected to the leader and the first electric match component is connected to the lift charge, the signal in the leader is applied to the lift charge; a second electric match component for connection to the time fuse connected to the burst charge of the pyrotechnic device, the second electric match component connected to the element such that when the element is connected to the leader and the second electric match component is connected to the time fuse, the signal in the leader is applied to the time fuse of the burst charge. ## Claims ### Claim 1 An electric match assembly for initiating a pyrotechnic device in response to an initiation a signal, the electric match assembly being configured for connection to a leader carrying the initiation signal, the electric match assembly comprising: a first electric match component for connection to the lift charge of the pyrotechnic device; a second electric match component for connection to the time fuse connected to the burst charge of the pyrotechnic device; and a shrouding for isolating the junction of the second electric match component and the time fuse from the lift charge; wherein when (i) the first electric match component is connected to the lift charge of the pyrotechnic device, (ii) the second electric match component is connected to the time fuse of the pyrotechnic device, (iii) the electric match assembly is connected to the leader, and (iv) an initiation signal is applied to the leader, the first electric match component initiates the lift charge of the pyrotechnic device and the second electric match component initiates the time fuse connected to the burst charge of the pyrotechnic device, whereby the first electric match component and the second electric match component function simultaneously with one another so that the initiation of the lift charge and the initiation of the time fuse for the burst charge occur simultaneously. ### Claim 2 (depends on 1) An electric match assembly according to claim 1 wherein the electric match assembly is assembled on a single substrate. ### Claim 3 (depends on 1) An electric match assembly according to claim 1 wherein the first electric match component and the second electric match component are connected in series within the electric match assembly. ### Claim 4 (depends on 1) An electric match assembly according to claim 1 further comprising a chamber enclosing the second electric match component and a portion of the time fuse for burst charge. ### Claim 5 (depends on 4) An electric match assembly according to claim 4 wherein the chamber comprises vent holes. ### Claim 6 (depends on 1) An electric match assembly according to claim 1 wherein the time fuse comprises a sub-assembly accommodating a conventional time fuse. ### Claim 7 (depends on 6) An electric match assembly according to claim 6 further comprising a safety plug. ### Claim 8 A pyrotechnic device comprising: a lift charge; a burst charge; a time fuse connected to the burst charge; a leader carrying an initiation signal; an electric match assembly for connection to the leader, the electric match assembly comprising: a first electric match component connected to the lift charge; a second electric match component connected to the time fuse connected to the burst charge; and a shrouding for isolating the junction of the second electric match component and the time fuse from the lift charge; wherein when (i) the first electric match component is connected to the lift charge, (ii) the second electric match component is connected to the time fuse, (iii) the electric match assembly is connected to the leader, and (iv) an initiation signal is applied to the leader, the first electric match component initiates the lift charge and the second electric match component initiates the time fuse connected to the burst charge, whereby the first electric match component and the second electric match component function simultaneously with one another so that the initiation of the lift charge and the initiation of the time fuse for the burst charge occur simultaneously. ### Claim 9 (depends on 8) A pyrotechnic device according to claim 8 wherein the electric match assembly is assembled on a single substrate. ### Claim 10 (depends on 8) A pyrotechnic device according to claim 8 wherein the first electric match component and the second electric match component are connected in series within the electric match assembly. ### Claim 11 (depends on 8) A pyrotechnic device according to claim 8 further comprising a chamber enclosing the second electric match component and a portion of the time fuse for burst charge. ### Claim 12 (depends on 11) A pyrotechnic device according to claim 11 wherein the chamber comprises vent holes. ### Claim 13 (depends on 8) A pyrotechnic device according to claim 8 wherein the time fuse comprises a sub-assembly accommodating a conventional time fuse. ### Claim 14 (depends on 13) A pyrotechnic device according to claim 13 further comprising a safety plug.