초록 ▼

An electrical igniter cap has a reproducible igniter characteristic by virtue of the fact that, at the firing side, an igniter unit 20 is covered by a sheeting of plastic material 21 which is rupture-resistant but tears quickly, and also at the firing side it bears against a sieve plate 28 with defi

An electrical igniter cap has a reproducible igniter characteristic by virtue of the fact that, at the firing side, an igniter unit 20 is covered by a sheeting of plastic material 21 which is rupture-resistant but tears quickly, and also at the firing side it bears against a sieve plate 28 with defined hole cross-sections.

대표청구항 ▼

1. An electrical igniter cap (1) comprising a housing (2), a bursting charge (26), an igniter unit (20) and an electrical firing device (11), a sieve plate (28) with a sheeting (21) constituted of plastic material which is rupture-resistant and rapid-tearing being interposed between said bursting ch

1. An electrical igniter cap (1) comprising a housing (2), a bursting charge (26), an igniter unit (20) and an electrical firing device (11), a sieve plate (28) with a sheeting (21) constituted of plastic material which is rupture-resistant and rapid-tearing being interposed between said bursting charge (26) said igniter unit (20) said sieve plate (28) being a constituent of a cup (25) surrounding the bursting charge (26) and being secured by ring and disc elements (33, 34) which are retained by a flange (32) on said cup. 2. An igniter cap according to claim 1, wherein the sieve plate (28) has openings, which have cross-sections which are 30-70% of the cross-section of a receiving bore (10) for said electrical firing device (11). 3. An igniter cap according to claim 1, wherein a firing wire bridge (15) is embedded in the igniter unit (20). 4. An igniter cap according to claim 1, wherein said plastic sheeting (21) comprises high density polyethylene (HDPE). 5. An igniter cap according to claim 1, wherein said plastic sheeting comprises a composite material.