Stable initiator compositions and igniters
AssigneeAlexza Pharmaceuticals, Inc.
InventorsHale L. Ron, Mingzu Lei, Hilary N. Pettit, Dennis W. Solas, Soonho Song, Curtis Tom
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Abstract
High sparking initiator compositions with a controlled amount of power are disclosed. The initiator compositions comprise a metal containing oxidizing agent, at least one metal reducing agent, and a non-explosive binder. Low voltage igniters that provide bidirectional plumes upon ignition are also disclosed. These igniters have a electrically resistive element positioned across a hole in a support which directs the plume. These igniters and compositions are useful in the actuation of solid fuel heating unit, in particular, sealed heating units.
Claims24
An initiator composition comprising a mixture including
- a. a metal containing oxidizing agent
- b. a metal reducing agent, and
- c. a non-explosive binder,
- wherein said mixture is characterized by release of a total amount of energy of 0.25 J to 8.5 J upon actuation and a deflagration time of 5 to 30 milliseconds at a composition thickness of 20 to 100 microns.
An initiator composition comprising about 26–27% by weight of aluminum, about 51–52% by weight of molybdemun trioxide, about 7–8% by weight of boron, and about 14–15% by weight of fluoro-carbon rubber, based on total composition dry weight.
Dependencies are inferred from the claim text.