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US 6,578,487 B2Granted
Pyrotechnic initiator with a narrowed sleeve retaining a pyrotechnic charge and methods of making same
AssigneeSpecial Devices, Inc.
InventorsVahan Avetisian, Todd Rosin
Life of this patent
Estimating the term…
Abstract
A pyrotechnic initiator with a narrowed sleeve attached to a header assembly and retaining a pyrotechnic charge, and methods of making same.
Claims20
A pyrotechnic initiator subassembly, comprising:
- a) a header assembly including an eyelet, a top surface, and an exposed electrical initiating element on said top surface;
- b) a cylindrical, open-ended sleeve attached to said eyelet and projecting upwardly above said top surface of said eyelet, said sleeve having a narrowed upper end;
- c) a pyrotechnic charge within said sleeve, said charge having a largest outer diameter that is greater than the inner diameter of said narrowed upper end of said sleeve, and said charge being in firm contact with said sleeve and said exposed electrical initiating element;
- and,
- d) a can sealed to said eyelet, said can surrounding said sleeve and said charge.
2 more elements
A method for making a pyrotechnic initiator subassembly, comprising the steps of:
- a) providing a header assembly including a top surface, an eyelet, and an electrical initiating element, said eyelet having an outer diameter, and said electrical initiating element residing exposed on said top surface;
- b) providing a cylindrical, open-ended sleeve having an upper region and a lower region, said lower region having an inner diameter that is approximately the same as said outer diameter of said eyelet;
- c) placing said lower region of said sleeve onto said eyelet and fixedly attaching said sleeve to said eyelet;
- d) loading said upper region of said sleeve with a liquid or slurry pyrotechnic charge;
- e) drying said liquid or slurry pyrotechnic charge;
- f) providing a narrowed upper end to said upper region of said sleeve;
- and,
- g) attaching a can to said eyelet so as to surround said sleeve and said charge.
5 more elements
Dependencies are inferred from the claim text.