Precision fireworks display system having a decreased environmental impact
Patent 5339741 Issued on August 23, 1994. Estimated Expiration Date: 
January 7, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 7, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventors
AssigneeApplicationNo. 817591 filed on 01/07/1992US Classes:102/361, Firecracker102/206, Ignition or detonation circuit102/431, Combustilbe, destructible, or caseless102/493Structurally weakened casingExaminersPrimary: Nelson, Peter A.Attorney, Agent or FirmForeign Patent References
International ClassF42B 004/04AbstractA system and method for launching projectiles, such as fireworks projectiles, which explode in the air into a pyrotechnic display. The projectile includes a shell constructed from a binding agent and an explosive additive which explodes the shell into small particles. The explosive additive, which may be nitrocellulose, causes the exploded particles to be rapidly burned and consumed to form lightweight, inert flakes that fall harmlessly to the ground. The projectile is aimed and launched by a launcher using a compressed gas to rapidly expel the projectile from a launching tube. Once in the air at a predetermined location in the sky, an electronic fuse inside the projectile operates to detonate the projectile into its intended pyrotechnic display. The fuse is extremely accurate and enables detonation of the projectile at precise altitudes. An electronic control system controls launching and detonation of the projectiles in a precise and repeatable manner.Other References
| |
