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US 4,717,031 AGranted
Fermentation vessel
AssigneeBrewmaster Systems Ltd.
InventorC. Bruce Hewson
Life of this patent
Estimating the term…
Abstract
A fermentation vessel is molded in one piece and comprises a container and a closure member. The container includes a neck portion. The closure member includes an air lock and a connection portion extending from the neck portion. In use, the connection portion is removed and discarded, to enable the closure member to be fitted around the neck portion. The vessel is made by a blow molding method.
Claims18
A unitary, molded fermentation vessel comprising:
- a container for receiving liquid, and including a neck portion at its upper end;
- and a closure member, which includes an air lock means and a connection portion continuous with the neck portion, and which closure member is removable in use, the closure member being adapted, in use, after separation from the connection portion, for forming a seal with the neck portion.
A unitary blow-molded fermentation vessel comprising:
- a cylindrical container for receiving liquid, and including a flat base, a shallow recess around the container for a heating belt, a socket for a tap, and a neck portion at an upper end thereof, which neck portion is generally circular, and includes an annular groove, open radially outwards, for an O-ring, and a threaded part above said annular groove;
- and a closure member which comprises a cylindrical body portion that defines a radially inset closure surface, adapted for sealing with an O-ring in said annular groove, a connection portion that is generally frustro-conical and extends radially inwards from the body portion to the neck portion of the container, and an air lock comprising a U-shape duct that extends from an upper end of the body portion.
Dependencies are inferred from the claim text.