초록 ▼

A multiple effect pyrotechnic shell ( 20 ), having a lift chamber ( 22 ), primary break ( 24 ), secondary break ( 26 ), and a tertiary break ( 28 ) has a desired weight distribution to inhibit tumbling. The secondary break weight is less than the primary break weight, and the tertiary break weight i

A multiple effect pyrotechnic shell ( 20 ), having a lift chamber ( 22 ), primary break ( 24 ), secondary break ( 26 ), and a tertiary break ( 28 ) has a desired weight distribution to inhibit tumbling. The secondary break weight is less than the primary break weight, and the tertiary break weight is less than both the primary and secondary break weights. Thus, the center of gravity of the shell ( 20 ) is positioned below a midpoint of the shell height. A first timing fuse ( 46 ) extends from a lift charge ( 30 ) into a primary break charge ( 50 A) of the primary break ( 24 ), and a primary internal timing fuse ( 64 ) extends from the primary break ( 24 ) to the secondary break ( 26 ). Further, a secondary internal timing fuse ( 70 ) extends from the secondary break ( 26 ) to the tertiary break ( 28 ). Fuse fragments ( 52 ) are preferably disbursed within the break hulls ( 48 ) to provide filler and add an additional effect to each break ( 24-28 ).

대표청구항 ▼

1. A consumer class firework artillery shell comprising:a primary break including a primary hull containing a primary break charge and a primary effect, the primary break having a primary break weight;a secondary break including a secondary hull containing a secondary break charge and a secondary ef

1. A consumer class firework artillery shell comprising:a primary break including a primary hull containing a primary break charge and a primary effect, the primary break having a primary break weight;a secondary break including a secondary hull containing a secondary break charge and a secondary effect, the secondary break having a secondary break weight less than the primary break weight, the secondary break being coupled to and positioned above the primary break; anda tertiary break including a tertiary hull containing a tertiary break charge and a tertiary effect, the tertiary break having a tertiary break weight less than the secondary break weight, the tertiary break being coupled to and positioned above the secondary break. 2. The shell according to claim 1 wherein the sum of the primary break weight charge , the secondary break weight charge , and the tertiary break weight charge is less than 40 grams. 3. The shell according to claim 1 further comprising a primary internal timing fuse extending from the primary break to the secondary break and a secondary internal timing fuse from the secondary break to the tertiary break. 4. The shell according to claim 3 wherein the internal timing fuses each comprises an outer diameter of approximately 3.5 mm and a core diameter of approximately 0.75 mm. 5. The shell according to claim 3 wherein the primary fuse is spaced apart from the secondary fuse. 6. The shell according to claim 1 further comprising a lift chamber containing a lift charge, and the lift chamber being attached to a bottom of the primary break. 7. The shell according to claim 6 further comprising a first timing fuse extending from the lift charge to the primary break. 8. The shell according to claim 6 further comprising an external safety fuse extending into the lift charge. 9. The shell according to claim 1 wherein at least one of the primary, secondary, and tertiary breaks includes fuse fragments within the hull. 10. A fireworks shell comprising:a primary break including a primary hull containing a primary break charge and a primary effect, the primary break having a primary break weight;a secondary break positioned above and coupled to the primary break and including a secondary hull containing a secondary break charge and a secondary effect, the secondary break having a secondary break weight; anda tertiary break positioned above and coupled to the secondary break and including a tertiary hull containing a tertiary break charge and a tertiary effect, the tertiary break having a tertiary break weight , and ; the primary, secondary, and tertiary break weights totaling less than 40 grams and being selected to inhibit tumbling ; and the primary, secondary, and tertiary break charges totaling less than 40 grams . 11. The shell according to claim 10 wherein the breaks define a central, vertical axis and a height having a midpoint, and the primary, secondary, and tertiary break weights being selected to position the center of gravity below the midpoint along the axis. 12. The shell according to claim 10 wherein the secondary break weight is less than the primary break weight and the tertiary break weight is less than the secondary break weight. 13. The shell according to claim 10 further comprising a lift chamber containing a lift charge and having a lift weight, and the lift chamber being attached to a bottom of the primary break to further inhibit tumbling. 14. The shell according to claim 10 wherein at least one of the primary, secondary, and tertiary breaks includes fuse fragments within the hull. 15. A fireworks shell comprising:a primary break having a primary break weight;a secondary break having a secondary break weight, said secondary break being coupled to and positioned above the primary break, said secondary break weight being less than said primary break weight;a tertiary break having a tertiary break weight, said tertiary break being coupled to and positioned above the secondary break, said tertiary break weight being less than said primary break weight, the sum of said primary, secondary, and tertiary break weights charges being less than 40 grams; anda lifting charge positioned below and coupled to the primary break for simultaneously propelling the primary, secondary and tertiary breaks into the air. 16. The shell according to claim 15 further comprising a single external fuse connected to the lifting charge and a plurality of internal fuses operatively and respectively interconnecting the lifting charge, the primary break, the secondary break and the tertiary break. 17. The shell according to claim 16 wherein said internal fuses are configured so that while the shell is in the air the primary break ignites before the secondary and tertiary breaks ignite, thereby propelling the secondary and tertiary breaks. 18. The shell according to claim 16 wherein said internal fuses are configured so that while the shell is in the air the secondary break ignites before the tertiary break, thereby propelling the tertiary break. 19. A fireworks shell comprising: a primary break including a primary hull containing a primary break charge and a primary effect, the primary break having a primary break weight; a secondary break positioned above and operably coupled with the primary break and including a secondary hull containing a secondary break charge and a secondary effect, the secondary break having a secondary break weight; and a tertiary break positioned above and coupled to the secondary break and including a tertiary hull containing a tertiary break charge and a tertiary effect, the tertiary break having a tertiary break weight, the primary, secondary, and tertiary break weights being selected to inhibit tumbling, and at least one of the secondary and tertiary break weights being less than the primary break weight. 20. The fireworks shell of claim 19, said tertiary break weight being less than the secondary break weight.