摘要 |
An explosively operated tool includes a ram and an anvil. The ram is driven towards the anvil by ignition of a cartridge. A crusher sleeve is provided on the ram such that, in the event the ram is driven towards the anvil without a member or members therebetween, by an accidental discharge of the tool, the crusher sleeve can deforms to thereby absorb kinetic energy from the ram and safely render the tool inoperative.
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