| 摘要 |
Actuating means for actuating a discharge valve of a gas tank or the like is normally held in a stationary valve deactuated position by detent means. The detent means is normally held in a retaining position by a fusible metal link. When the link is fused, by an environmental temperature rise, the detent means is displaced to a releasing position at a right angle to the direction of movement of said actuating means, thereby permitting said actuating means to actuate the valve.
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