Surface-initiating deflagrating material
First Claim
1. An igniter consisting essentially of inorganic components comprising an inorganic carrier on which is coated a pyrotechnic material to provide a coated carrier, the pyrotechnic material comprising an inorganic reductant component, an inorganic oxidizer component and an inorganic binder.
1 Assignment
0 Petitions
Accused Products
Abstract
An igniter (18) provides rapid longitudinal and radial propagation of the ignition reaction. The igniter may comprise a pyrotechnic material and an inorganic binder, such as silica, carried on a carrier web (10) which may be fiber-glass. One or more layers of coated web (10) are disposed to provide an igniter (18) of cylindrical configuration and having a hollow core. The coated layers are permeable to the ignition reaction to facilitate radial propagation of ignition. The hollow core and the continuous nature of the pyrotechnic layers promotes longitudinal propagation of ignition. The igniter may consist mostly or entirely of inorganic materials to reduce or eliminate the formation of carbon monoxide upon ignition, and may be contained within a radially perforated sheath (20) to form a radial ignition device (25).
44 Citations
20 Claims
- 1. An igniter consisting essentially of inorganic components comprising an inorganic carrier on which is coated a pyrotechnic material to provide a coated carrier, the pyrotechnic material comprising an inorganic reductant component, an inorganic oxidizer component and an inorganic binder.
- 12. An igniter having a cylindrical configuration comprising a carrier on which is coated a pyrotechnic material to provide a coated carrier, the pyrotechnic material comprising a reductant component and an oxidizer component, the cylindrical configuration of the igniter being defined by one or more radially disposed layers of the coated carrier, the layers of the coated carrier being sufficiently porous to be permeable to ignition of the pyrotechnic material, whereby ignition of the pyrotechnic material propagates both longitudinally and radially through the igniter.
-
18. An igniter consisting essentially of inorganic components and an organic sizing as defined below, and comprising a carrier containing a blend of inorganic and organic sizings on which is coated a pyrotechnic material to provide a coated carrier, the pyrotechnic material comprising an inorganic reductant component and an inorganic oxidizer component;
- wherein the organic sizings consist essentially of an acrylic resin and comprise from about 5 to 30% by weight of the total weight of inorganic and organic sizings.
- View Dependent Claims (19)
-
20. An igniter consisting essentially of inorganic components and a limited amount of an organic sizing as defined below, the igniter comprising an inorganic carrier on which is coated a pyrotechnic material to provide a coated carrier, the pyrotechnic material comprising an inorganic reductant component and an inorganic oxidizer component, and the sizing is present in an amount of from about 3 to 6% by weight of the unsized carrier and comprises a combination of an inorganic sizing and an organic sizing comprising a carbonaceous polymeric material.
Specification