| 摘要 |
The invention relates to a safety coupling, for the releasable connection of a nozzle to a duct system, which nozzle and duct system form part of an extraction system. The safety coupling comprises a coupling member having a first coupling part, which is adapted for fitting in the nozzle, and a second coupling part, which is adapted for fitting in the duct system. The first and second coupling parts are adapted to be brought together for connection of the nozzle to the duct system. In the joined state of the coupling parts, the coupling member is adjustable between a coupled position, in which the coupling parts are coupled together to lock the connection of the nozzle to the duct system, and a decoupled position, in which the coupling parts are separable to allow release of the nozzle from the duct system. An actuating member is arranged to move the coupling member from the coupled position into the decoupled position when the coupling member is subjected to a disengagement force exceeding a predetermined limit value.
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