# US 7,194,959 B2 · Precision pyrotechnic display system and method having increased safety and timing accuracy

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- Number: US 7,194,959 B2
- Document ID: US7194959B2
- Status: Granted
- Kind: B2
- Application number: 10/958,721
- Filed: 2004-10-05
- Published: 2006-02-09
- Granted: 2007-03-27
- Earliest claimed: 1998-03-30
- Assignees: MagicFire, Inc.
- Inventors: George Bossarte; Glenn W. Dillon; Paul R. McKinley; Wayne C. Haase; Larry G. Nelson
- Web page: https://patentgrep.com/patent/US7194959B2

## CPC

- F42B 4/02: in cartridge form, i.e. shell, propellant and primer
- F41A 19/58: Electric firing mechanisms (F41A17/10, F41A17/12 take precedence)
- F41A 19/65: for giving ripple fire, i.e. using electric sequencer switches for timed multiple-charge launching, e.g. for rocket launchers
- 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)
- F42B 30/10: Mortar projectiles
- F42C 11/00: Electric fuzes ({in combination with other fuzes F42C9/14}; proximity fuzes F42C13/00; {safety or arming effected by electric means F42C15/40; electric contact parts for fuzes F42C19/06}; electric igniters F42C19/12, {F42B3/12 - F42B3/18; optical initiators F42B3/113})
- 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)}
- F42C 11/008: {Power generation in electric fuzes (F42C11/02, F42C11/04 and F42C15/295 take precedence)}
- F42D 1/05: Electric circuits for blasting
- 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)
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- 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

A system and method are disclosed for controlling the launch and burst of pyrotechnic projectiles in a pyrotechnic, or “fireworks”, display.

## Claims

### Claim 1

A detonator for detonating a pyrotechnic projectile, said detonator comprising:
an electronic control unit for (i) receiving a status inquiry from an external control device requesting confirmation that all conditions necessary for a successful launch and burst of the pyrotechnic projectile are satisfied; (ii) responding to the external control device with a status condition confirming that all conditions necessary for a successful launch and burst of the pyrotechnic projectile are satisfied; (iii) receiving an electronic fire command from the external control device; (iv) launching the pyrotechnic projectile; (v) confirming successful launch of the pyrotechnic projectile; and (vi) detonating the pyrotechnic projectile a pre-determined time after confirming successful launch.