Rebreather adsorbent system
First Claim
1. A gas adsorbent system for use in a self-contained breathing apparatus that comprisesa canister body;
- a gas adsorbent material formed into an air permeable and liquid-water resistant sheet that prevents migration of gas adsorbent material from the canister body in the event that water passes through the canister body;
wherein the sheet is mounted in the canister body so as to allow air flow through the canister body to interact with the gas adsorbent material within the sheet.
2 Assignments
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Accused Products
Abstract
A gas absorption rebreather canister containing at least one sheet embodying adsorbent material inside and a portion of the sheet spaced apart by a separating means. The sheet being arranged so that expelled gases entering the canister pass along the canister interior substantially parallel with a surface of the sheet. The sheets can be formed with an internal screen positioned between two gas-permeable, liquid-water resistant membranes and the adsorbent material positioned within interstices between the screen members. Also, the sheets can comprise a sheet of expanded porous PTFE having a microstructure of nodes interconnected with fibrils, said sheet containing gas adsorbent material. The sheet can be covered on each side by a sheet of expanded porous PTFE. This device effectively contains the adsorption material within the sheets even when exposed to liquid water. The result is a rebreather device that is safer, more efficient, and easier to use than any presently on the market.
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Citations
51 Claims
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1. A gas adsorbent system for use in a self-contained breathing apparatus that comprises
a canister body; -
a gas adsorbent material formed into an air permeable and liquid-water resistant sheet that prevents migration of gas adsorbent material from the canister body in the event that water passes through the canister body; wherein the sheet is mounted in the canister body so as to allow air flow through the canister body to interact with the gas adsorbent material within the sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23)
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21. A gas adsorbent rebreather system employing a canister body for holding gas adsorbent material that comprises
a carbon dioxide gas adsorbent material formed into a sheet that prevents releasing carbon dioxide gas adsorbent particles; -
the sheet being pre-formed into a cartridge for ready installation into the canister body; wherein the sheet is arranged in multiple layers and at least one air-flow gap is provided between the layers; and wherein the cartridge is proportioned to orient the sheet within the canister body so as to direct air flow through at least one air-flow gap to interact with the gas adsorbent material in the sheet. - View Dependent Claims (22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A rebreather system comprising
a carbon dioxide adsorbent formed into a sheet; -
the sheet being arranged as a cartridge in multiple layers having multiple air-flow gaps provided between the layers; the cartridge being adapted for installation in the rebreather system so as to direct air flow through the air flow gaps essentially parallel to the sheet layers, interacting the carbon dioxide adsorbent material with the air; and a diffusion panel that is proportioned to redistribute gases flowing through the cartridge. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification