Apparatus and method for controlled delivery of a gas
AssigneeSelective Micro Technologies, LLC
InventorsRichard A. Hamilton, John J. Warner
Life of this patent
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Abstract
Disclosed are apparatus for delivery of a gas, e.g., carbon dioxide and/or chlorine dioxide, and methods of its use and manufacture. The apparatus includes an envelope, and a sachet within the envelope that contains reactant, which generates a gas in the presence of an initiating agent, e.g., water. The envelope allows release of the gas from the envelope. In another embodiment, the apparatus includes an envelope and a partition that separates two reactants within the envelope. The envelope allows an initiating agent into the envelope and release of the gas generated by the reactants in the presence of the initiating agent.
Claims40
An apparatus for delivery of a gas comprising:
- an envelope comprising a hydrophobic material;
- a sachet disposed within and not sharing a common boundary with the envelope;
- and
- a reactant disposed within the sachet that generates a gas in the presence of an initiating agent,
- wherein the envelope allows release of the gas from the envelope.
An apparatus for delivery of a gas comprising:
- a first reactant disposed within a first sachet;
- a second reactant disposed within a second sachet;
- a third sachet disposed about the first sachet and the second sachet;
- an envelope disposed about the third sachet;
- a frangible pouch disposed within the envelope adjacent to the third sachet;
- and
- an initiating agent disposed within the frangible pouch,
- wherein the first reactant and the second reactant generate a gas in the presence of the initiating agent, and the envelope allows release of the gas from the apparatus.
A method of forming an apparatus for delivery of a gas comprising:
- (a) providing a multi-layer structure comprising a reactant layer centrally disposed between two sachet layers, and two envelope layers disposed adjacent to the two sachet layers such that the two sachet layers are centrally disposed between the two layers;
- and
- (b) stamping the multi-layer structure such that the two envelope layers form an envelope defined about its perimeter by the stamp, and the two sachet layers from a sachet defined about its perimeter by the stamp,
- wherein the sachet is disposed within and does not share a common boundary with the envelope.
A method of delivering gas comprising:
- (a) providing an apparatus for delivery of a gas comprising:
- an envelope comprising a hydrophobic material;
- a sachet disposed within and not sharing a common boundary with the envelope;
- and
- a reactant disposed within the sachet that generates a gas in the presence of an initiating agent,
- wherein the envelope allows release of the gas from the envelope;
- and
- (b) disposing the apparatus in an environment that comprises an initiating agent.
An apparatus for delivery of a gas comprising:
- an envelope comprising a hydrophobic material;
- a sachet disposed within the envelope;
- and
- a reactant disposed within the sachet that generates a gas in the presence of an initiating agent,
- wherein the envelope allows release of the gas from the envelope, and defines an envelope volume about 2 to about 6 times a volume defined by the sachet.
An apparatus for delivery of a gas comprising:
- an envelope comprising a hydrophobic material;
- a first sachet and a second sachet disposed within the envelope;
- a first reactant disposed within the first sachet;
- and
- a second reactant disposed within the second sachet.
A method of delivering a gas comprising the steps of:
- providing the apparatus of claim 36, or 39;
- and
- disposing the apparatus in an environment that comprises an initiating agent.
Dependencies are inferred from the claim text.