Modular respirators and a method of conversion thereof
First Claim
1. A method of converting a respirator mask from a first type of body seal to a second type of body seal, wherein the respirator mask has a facial lens, the lens having a perimeter sealing edge extending around the lens, the method comprising:
- releasing a seal between the perimeter sealing edge of the lens and a lens opening on the first type of body seal;
removing the lens from the lens opening on the first type of body seal;
aligning the lens within a lens opening on the second type of body seal; and
forming a seal between the perimeter sealing edge of the lens and the lens opening of the second type of body seal.
1 Assignment
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Accused Products
Abstract
A modular respirator system has interchangeable facial lenses and body seals such as a full facepiece seal or a hood. A method of conversion from a full facepiece respirator to a hood respirator, or vice versa, is also disclosed. In one embodiment, lens conversion is accomplished without changing the type of body seal. In another embodiment, a breathable gas delivery conduit is connected to the facial lens and interchanged between the body seals together with the facial lens.
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Citations
41 Claims
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1. A method of converting a respirator mask from a first type of body seal to a second type of body seal, wherein the respirator mask has a facial lens, the lens having a perimeter sealing edge extending around the lens, the method comprising:
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releasing a seal between the perimeter sealing edge of the lens and a lens opening on the first type of body seal;
removing the lens from the lens opening on the first type of body seal;
aligning the lens within a lens opening on the second type of body seal; and
forming a seal between the perimeter sealing edge of the lens and the lens opening of the second type of body seal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for converting a respirator mask from a full facepiece respirator to a hood respirator, wherein the respirator mask has a facial lens, the lens having a perimeter sealing edge extending around the lens, the method comprising:
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releasing a seal on the full facepiece respirator from sealed engagement to the facial lens of the mask about the perimeter sealing edge thereof;
removing the lens from the full facepiece respirator;
aligning a lens opening of a hood respirator in sealed engagement with the perimeter sealing edge of the mask; and
sealably affixing the lens opening of the hood respirator to the perimeter sealing edge of the mask. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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12. A hood respirator comprising:
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a shroud having a head-covering portion which has a lens opening therein, and a body sealing portion configured for forming a seal with a wearer'"'"'s neck, shoulders or other body surfaces;
a facial lens having a perimeter sealing edge extending around the lens;
a disengageable coupling between the lens opening of the shroud and the perimeter sealing edge of the lens, the coupling having a first engaged condition wherein the lens is sealably affixed to the shroud and a second released condition wherein the lens is removable from the shroud; and
a breathable gas delivery conduit fluidly coupled to the hood.
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21. A hood respirator comprising:
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a shroud having a head-covering portion having a front opening therein, and a body sealing portion configured for forming a substantially seal with a wearer'"'"'s neck, shoulders or other body surfaces;
a respirator mask having a facial lens, a perimeter sealing edge around the mask, and a breathable gas delivery conduit; and
a disengageable coupling between the front opening of the shroud and the perimeter sealing edge of mask, the coupling having a first engaged condition wherein the mask is sealably affixed to the shroud and a second released condition wherein the mask is removable from the shroud. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41)
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29. A respiratory kit comprising:
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a plurality of body seals comprising at least a first type of body seal and a second type of body seal, each body seal having a lens opening defined therein;
at least one facial lens having a perimeter sealing edge around the lens, the lens capable of being selectively removably coupled with each body seal along the perimeter sealing edge of the lens and the lens opening on the body seal wherein, when so coupled, a seal is defined between the body seal and the lens; and
a breathable gas delivery conduit capable of being fluidly coupled to each of the body seals or the lens.
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38. A respiratory kit comprising:
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at least one respirator hood, with each hood having a mask opening defined therein;
at least one respirator mask having a facial lens, a full facepiece seal coupled with the lens, and a perimeter sealing edge extending around the mask, wherein the mask is capable of being selectively removably coupled with each hood along the perimeter sealing edge of the mask and the mask opening on the hood so that, when so coupled, the hood is superpositioned over the full facepiece seal and a seal is defined between the hood and the mask; and
a breathable gas delivery conduit capable of being fluidly connecting to the mask or the hood .
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Specification