| 摘要 |
A fire fighting tool is described which is capable of both penetrating the wall of an enclosure, and dispensing a fire fighting agent into the interior of the enclosure. A drill bit or other penetrating device is carried at the forward end of an elongate shaft which is connected at its rear end to a drill motor or other appropriate actuating device. The shaft is surrounded by a barrel which receives a fluid fire fighting agent and includes a series of outlet openings at its forward end through which the agent is dispensed. The shaft is thus surrounded and cooled by the agent during the penetration operation. A leaky bearing is provided at the forward end of the barrel, and is specially configured along with the shaft and drill bit to induce a leakage of agent through the bearing and onto the bit and surrounding enclosure wall during drilling, thereby cooling the various parts and lessening the risk of an explosion. The barrel is designed to hold the tool in place once it has been inserted into the enclosure.
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