초록 ▼

A compact, integral forced-ventilation personal respirator device for the breathing space in a gas mask, protective helmet or hood, or the like, comprises a housing including a connector for air-tight connection of the housing to the breathing space to be protected, an electric blower removably atta

A compact, integral forced-ventilation personal respirator device for the breathing space in a gas mask, protective helmet or hood, or the like, comprises a housing including a connector for air-tight connection of the housing to the breathing space to be protected, an electric blower removably attachable to the housing and comprised of an electric motor stationary relative to the housing in the attached state of the blower and a bladed centrifugal-type rotor fixedly mounted on the output shaft of the motor, a compartment inside the housing for accommodating a filter medium, the compartment facilitating access of the output air from the blower to the filter medium, and egress of the filter air from the medium to a space communicating with the connector of the housing, whereby ambient air is drawn into the housing by the blower and forced thereby via the filter medium into the breathing space to be protected.

대표청구항 ▼

A compact, integral forced-ventilation personal respirator device comprising: means defining a closed personal breathing space to be protected; a housing including connector means for air-tight connection of said housing to said closed space to be protected; an electric blower removably attachable t

A compact, integral forced-ventilation personal respirator device comprising: means defining a closed personal breathing space to be protected; a housing including connector means for air-tight connection of said housing to said closed space to be protected; an electric blower removably attachable to said housing and comprised of an electric motor stationary relative to said housing in the attached state of said blower and a bladed centrifugal-type rotor fixedly mounted on the output shaft of said motor; and at least one at least partly annular compartment inside said housing for accommodating at least one filter medium of at least partly annular configuration located downstream of said blower, both said electric motor and the rotor of said blower being disposed within a space inside of said partly annular filter medium, at least a portion of the blading of said rotor being substantially coplanar with said filter medium, said compartment providing access of the output air from said blower to said filter medium and egress of filtered air from said filter medium to a space communicating with said connector means of said housing, whereby ambient air is drawn into said housing by said blower and forced thereby via said at least one filter medium and said connector means into said closed space to be protected.