发明名称 |
Safe-arm initiator |
摘要 |
A pair of explosive detonators are recessed in the end of a cylindrical body containing a permanent magnet, which serves as the rotor in a brushless, bi-directional torque motor enclosed in a housing. A reversible positioning current causes the motor to rotate the body between armed and safe positions and thereby establish and interrupt axial explosive transfer paths from the detonators to a corresponding pair of explosive transfer lines ported through the housing cover. An internal switching circuit disables the detonators when the body is in the safe position and passes a firing current to them when the body is in the armed position. A detent ring secured to the rotatable body, and a pair of spring-loaded detents in the housing index the rotatable body in the armed and safe positions and prevent its accidental rotation. Mechanical safing means are provided for manually overriding an electrical arming signal.
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申请公布号 |
US5279226(A) |
申请公布日期 |
1994.01.18 |
申请号 |
US19920972235 |
申请日期 |
1992.11.04 |
申请人 |
SPECIAL DEVICES, INCORPORATED |
发明人 |
RITCHIE, ROBERT S.;SUDICK, JOHN A. |
分类号 |
F42C15/188;F42C15/40;(IPC1-7):F42C15/40;F42C15/34 |
主分类号 |
F42C15/188 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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