Pyrotechnic cup
First Claim
Patent Images
1. A pyrotechnic cup designed for use as part of an initiator, the cup comprising:
- a cylindrical portion, the cylindrical portion including a crimped bend configured to unfold without rupturing at the crimped bend during deployment of the initiator;
a dome having a top piece with an apex and a tapered portion, the tapered portion of the dome being disposed between a first end of the cylindrical portion and the top piece; and
a cruciform, at least a portion of the cruciform being positioned on a portion of the cylindrical portion, the cruciform configured to open during deployment of the initiator.
1 Assignment
0 Petitions
Accused Products
Abstract
The pyrotechnic cup is designed such that it may be used as part of an airbag initiator. In some embodiments, the cup comprises a cylindrical portion and a dome that is attached to a first end of the cylindrical portion. A cruciform is also added to the cup. The cruciform is positioned at the apex of the dome. In some embodiments, the cruciform comprises one or more petals. Other embodiments may be designed in which deployment of the initiator causes gas to be directed out of the pyrotechnic cup via the apex of the dome.
34 Citations
19 Claims
-
1. A pyrotechnic cup designed for use as part of an initiator, the cup comprising:
-
a cylindrical portion, the cylindrical portion including a crimped bend configured to unfold without rupturing at the crimped bend during deployment of the initiator; a dome having a top piece with an apex and a tapered portion, the tapered portion of the dome being disposed between a first end of the cylindrical portion and the top piece; and a cruciform, at least a portion of the cruciform being positioned on a portion of the cylindrical portion, the cruciform configured to open during deployment of the initiator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An initiator for use with an airbag inflator, the initiator comprising:
-
a squib; a quantity of combustible material, wherein the combustible material is ignited by the squib during deployment; a pyrotechnic cup that houses the squib and the combustible material, wherein the cup comprises, a cylindrical portion including a crimped bend, wherein the crimped bend unfolds without rupturing at the crimped bend during deployment of the initiator, a dome attached to a first end of the cylindrical portion, a cruciform having at least a portion of which being positioned on a portion of the pyrotechnic cup other than the top piece, and a projection welding flange positioned at a second end of the cylindrical portion, wherein the projection welding flange attaches the pyrotechnic cup to the squib. - View Dependent Claims (14, 15, 16, 17)
-
-
18. A method for preventing fragmentation of a pyrotechnic cup in an inflator, the method comprising:
-
obtaining a pyrotechnic cup, the cup comprising; a cylindrical portion including a crimped bend, wherein the crimped bend unfolds without rupturing at the crimped bend during deployment of the initiator; a dome having an apex, the dome attached to a first end of the cylindrical portion; and a cruciform positioned at the apex of the dome and extending into the tapered portion of the dome; and positioning the cup around a squib and a combustible material, wherein at least one of the dome or the crimped bend prevents fragmentation of the cup.
-
-
19. A pyrotechnic cup designed for use as part of an initiator, the cup comprising:
-
a cylindrical portion; a dome having an apex, the dome attached to a first end of the cylindrical portion; a cruciform; and a crimped bend that expands without bursting at the crimped bend during deployment of the initiator, wherein the crimped bend is intermediate of the dome and a projection welding flange that is positioned at a second end of the cylindrical portion.
-
Specification