Protective equipment with fast fixing head
AssigneeIntertechnique
InventorMichel Bardel
Life of this patent
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Abstract
The invention concerns a protective breathing equipment comprising a respirator provided with a regulator designed to be connected to a source of breathing mixture under pressure and a harness having at least an extensible strap whereof the ends are connected to the respirator and comprising an element temporarily inflatable with the pressurised breathing mixture to extend the strap until it reaches a sufficient dimension to enable the user to engage the harness on his head and capable of being emptied to enable the strap, to press the respirator against his face. A flexible envelope covering the head is tightly fixed to the single strap or to the upper strap of the harness and fixed to the respirator; it is transparent at least in the portion opposite the eyes when the equipment is worn.
Claims13
Breathing protection equipment comprising:
- a breathing mask carrying a regulator arranged for connection to a source of breathing gas under pressure,
- a harness having at least one extensible strap whose ends are connected to the mask and which includes
- an element which is temporarily inflatable by admitting at will said breathing gas under pressure in order to lengthen the strap to a size that is large enough to enable a user of the equipment to don the harness over the head of the user and which is deflatable so as to allow the strap to tighten, to press the mask against the face of the user and to hold the mask in place, and
- a sheath apt to limit an amount of extension of the strap and fixed to the mask, and
- a flexible cover for covering the head, having an air tight connection with the mask and an air tight connection with the sheath, said cover being transparent at least in a portion thereof that lies in front of the eyes of the user when the equipment is being worn.
Breathing protection equipment comprising:
- a breathing mask carrying a, regulator arranged for connection to a source of breathing gas under pressure,
- a harness having an extendable top strap and an extendable bottom strap whose ends are connected to the mask and which each include an element which is temporarily inflatable by admitting at will said gas under pressure in order to lengthen the strap to a size that is large enough to enable a user of the equipment to don the harness over the head and which can be deflated so as to allow the strap to tighten, to press the mask against the face, and to hold it in place, and
- a flexible cover for covering the head, fixed in leak-tight manner to a sheath apt to limit elongation of at least the top strap of the harness, and fixed to the mask, said cover being transparent at least in a portion thereof that lies in front of the eyes of the user when the equipment is being worn.
Breathing protection equipment comprising:
- a breathing mask carrying a regulator arranged for connection to a source of breathing gas under pressure,
- a harness having at least one extensible strap whose ends are connected to the mask and which includes
- an element which is temporarily inflatable by admitting at will said breathing gas under pressure in order to lengthen the strap to a size that is large enough to enable a user of the equipment to don the harness over the head of the user and which is deflatable so as to allow the strap to tighten, to press the mask against the face of the user and to hold the mask in place, and
- an inextensible non rigid outer sheath arranged to limit extension of the strap to predetermined length and fixed to the mask, and
- a flexible cover for covering the head, having an air tight connection with the mask and with said outer sheath, said cover being transparent at least in a portion thereof that lies in front of the eyes of the user when the equipment is being worn.
Breathing protection equipment comprising:
- a breathing mask carrying a regulator arranged for connection to a source of breathing gas under pressure,
- a harness having at least one extensible strap whose ends are connected to the mask and which includes
- an element which is temporarily inflatable by admitting at will said breathing gas under pressure in order to lengthen the strap to a size that is large enough to enable a user of the equipment to don the harness over the head of the user and which is deflatable so as to allow the strap to tighten, to press the mask against the face of the user and to hold the mask in place, and
- a sheath apt to limit an amount of extension of the strap and fixed to the mask, and
- a flexible cap-shaped cover for covering the head, having an air tight connection with the mask and having an air tight connection with and along the sheath in an edge portion of said cover, said cover being transparent at least in a portion thereof that lies in front of the eyes of the user when the equipment is being worn.
Dependencies are inferred from the claim text.