초록 ▼

A cap adapted for use in pressurizing the interior of a container for carbonated beverages, the container having an opening therein, the cap comprising a cap adapted for sealing engagement with the container for sealing closure of the opening, a boss projecting from the cap for connecting a pressuri

A cap adapted for use in pressurizing the interior of a container for carbonated beverages, the container having an opening therein, the cap comprising a cap adapted for sealing engagement with the container for sealing closure of the opening, a boss projecting from the cap for connecting a pressurizing device to the cap, a passage in the boss for providing communication between the pressurizing device and the interior of the container when the cap is on the container, the pressurizing device being operable to introduce gas via the passage into the interior of the container to pressurize it, and a single check valve in the passage. The check valve is adapted for permitting flow of gas from the pressurizing device into the interior of the container via the passage, for blocking flow of gas out of the container via the passage when the pressure in the container is below a predetermined limit, and for permitting flow out of the container via the passage when the pressure reaches or exceeds the predetermined limit.

대표청구항 ▼

A cap in combination with a pressurizing device for pressurizing the interior of a container for carbonated beverages, the container having a threaded finish defining an opening therein, the cap comprising a generally cylindric body having a top wall and a depending side wall, and internal threads f

A cap in combination with a pressurizing device for pressurizing the interior of a container for carbonated beverages, the container having a threaded finish defining an opening therein, the cap comprising a generally cylindric body having a top wall and a depending side wall, and internal threads for screwing the body onto the container, the body being formed for releasable connection of said pressurizing device thereto, a seal underlying the top wall of the body adapted for sealing engagement with the finish of the container when the cap is screwed onto the container, a passage in the body for providing communication between said pressurizing device and the interior of the container when the body is on the container, said body having a relatively long slender boss projecting up from the top wall of the body, and wherein the passage is of generally uniform diameter and extends axially of the boss and through the top wall of the body, said pressurizing device being adapted for releasable connection with the boss and being operable to introduce gas via said passage into the interior of the container to pressurize it, and a single check valve member in said passage adapted for permitting flow of gas from said pressurizing device into the interior of the container via said passage, for blocking flow of gas out of the container via said passage when the pressure in the container is below a predetermined limit, and for permitting flow out of the container via said passage when said pressure reaches or exceeds said predetermined limit.