Individual protective equipment including a pressure suit and a self-contained breathing apparatus
AssigneeIntertechnique
InventorRaymond Beaussant
Life of this patent
Estimating the term…
Abstract
The individual equipment for use when taking action in a noxious atmosphere comprises a pressure suit having a flexible garment (10) and a helmet (12) provided with a transparent visor and including a self-contained breathing apparatus for supplying breathing gas from a gas supply. The face is separated from the garment by a neck gasket (16). The supply (24) is connected to a breathing circuit that opens out into the helmet via a regulator (48) to maintain the volume around the face at a pressure higher than that in the garment. The equipment also includes a face mask (52) having a valve for breathing in from the helmet and pipework for breathing out directly to the outside via rated non-return means.
Claims12
Individual protective equipment comprising:
- a protective suit having a flexible garment, a helmet provided with a transparent visor surrounding the head, sealing means separating a volume of gas around a wearer's face within the helmet from an additional volume defined by the garment around a body of the wearer, and an oro-nasal mask provided with a valve for inhaling from said volume of gas around the face within the helmet and means for exhaling directly to ambient, said means including rate non-return valve means;
- and
- a self-contained breathing apparatus having a supply of gas connected to a breathing circuit opening out into said helmet, said breathing circuit including a regulator maintaining said volume of gas around the face at an overpressure relative to the pressure in said additional volume.
Individual protective equipment comprising:
- a protective suit having a flexible garment, a helmet provided with a transparent visor sealing means separating a volume of gas around a wearer's face within the helmet from an additional volume defined by the protective suit;
- and
- a self-contained breathing apparatus including:
- a breathing gas storage supply connected to a breathing circuit opening out into the helmet and including a regulator designed for maintaining the volume around the face at an overpressure relative to the pressure in the garment;
- rated non-return valve means for exhalation to the outside;
- and a rated valve for admitting exhaled air into the garment when an exhalation overpressure relative to the garment exceeds a determined value.
Dependencies are inferred from the claim text.