POWERED AIR PURIFYING RESPIRATOR
First Claim
1. A powered air purifying respirator, comprising:
- a housing defining an air inlet and an air outlet;
a filter assembly operably connected to said housing at said air inlet for removing contaminants from air passing therethrough;
an impeller/motor assembly contained within said housing for drawing air through said air inlet and through said filter assembly;
a flow sensor contained within said housing for measuring air flow from said air inlet to said air outlet; and
a liner contained within said housing for aiding in attenuating a force of impact to said housing, said liner further defining an air pathway from said impeller/motor assembly through said flow sensor and to said air outlet.
1 Assignment
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Accused Products
Abstract
A powered air purifying respirator includes a housing defining an air inlet and an air outlet; a filter assembly operably connected to the housing for removing contaminants from air passing therethrough; an impeller/motor assembly contained within the housing for drawing air through the air inlet and through the filter; a flow sensor contained within the housing for measuring air flow from the air inlet to the air outlet; and a liner contained within the housing for locating and retaining the various internal components, while also aiding in attenuating a force of impact to the housing, the liner further defining an air pathway from the impeller/motor assembly through the flow sensor and to the air outlet.
71 Citations
12 Claims
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1. A powered air purifying respirator, comprising:
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a housing defining an air inlet and an air outlet; a filter assembly operably connected to said housing at said air inlet for removing contaminants from air passing therethrough; an impeller/motor assembly contained within said housing for drawing air through said air inlet and through said filter assembly; a flow sensor contained within said housing for measuring air flow from said air inlet to said air outlet; and a liner contained within said housing for aiding in attenuating a force of impact to said housing, said liner further defining an air pathway from said impeller/motor assembly through said flow sensor and to said air outlet. - View Dependent Claims (2, 3, 4, 5)
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6. In a powered air purifying respirator, including a housing defining an air inlet and an air outlet, a filter assembly operably connected to said housing at said air inlet for removing contaminants from air passing therethrough, and an impeller/motor assembly contained within said housing for drawing air through said air inlet and through said filter assembly, the improvement comprising:
a shock-absorbing liner contained within said housing, said shock-absorbing liner defining an air pathway from said impeller/motor assembly to said air outlet. - View Dependent Claims (7, 8, 9, 10, 11, 12)
Specification