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US 5,515,994 AGranted
Degassing valve for aromatic products, such as coffee and similar products
OwnerLuigi Goglioinventor
Life of this patent
Estimating the term…
Abstract
A one-way degassing valve (4) for aromatic products, such as coffee and the like, comprising a valve body (5,6), a valve element (12) and a selective type filter (17, 170), preferably consisting of activated charcoal which allows the passage of low molecular weight gases, such as carbon dioxide, and retains the high molecular weight gases that constitute the product's aroma.
Claims6
A degassing valve for a product which produces an aroma, comprising:
- a valve body,
- a one-way valve element positioned on the valve body, and a filter engaging said valve body, said filter preventing the passage of solid components of said product and allowing passage of a gas produced by said product, said gas being selected from the group consisting of carbon dioxide, oxygen, nitrogen and methane and retaining in said filter longer molecular chain gases which comprise the aroma of the product wherein said filter comprises one of activated charcoal and activated charcoal mixed with another substance.
Dependencies are inferred from the claim text.