| 摘要 |
This invention relates to a coupling connector attachable to and detachable from a respirator mask. The connector comprises a chamber which is arranged to be in communication with the mask in the attached position, a tube for connection to a source of pressurized breathing gas, a valve to admit or interrupt the gas flow, a pressure gauge device sensing the relative pressure prevailing within the chamber, and means of positively interlinking the said valve with the pressure gauge device. According to the invention the connector has a feeler which is released or inserted depending on whether it is attached to the mask or not, said feeler being associated with the interlinkage means via means modifying the mode of operation, which are arranged to establish an operational mode under negative pressure or overpressure automatically depending on whether the feeler is free or inserted. The connector is intended for respirator devices shut off in the open circuit condition.
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