초록 ▼

The air vent has a body with a central axis, a top end, a bottom end, a flat surface on the top end and a flat surface on the bottom end. A gripping surface extends from the top flat surface to a stop surface that is transverse to the axis. The small diameter end of an upper conical surface joins th

The air vent has a body with a central axis, a top end, a bottom end, a flat surface on the top end and a flat surface on the bottom end. A gripping surface extends from the top flat surface to a stop surface that is transverse to the axis. The small diameter end of an upper conical surface joins the stop surface. A large diameter end of a lower conical surface joins the large diameter end of the upper conical surface. A cutting edge formed by the flat bottom surface and the lower conical surface pierces a container when the air vent is forced into the container. The lower conical surface expands the opening made by the cutting edge. The stop surface limits penetration and the upper conical surface urges the container wall toward the stop surface. An air vent passage through the top flat surface and the bottom flat surface lets air into the container. A cap closes the air vent passage. The air vent is removed from an empty container for use in another container.

대표청구항 ▼

[ I claim:] [1.] An air vent for a container comprising a body with a top end and a bottom end, an upper section on the top end having a generally flat surface facing away from the bottom end and a stop surface that faces toward the bottom end; an upper conical section that is integral with the uppe

[ I claim:] [1.] An air vent for a container comprising a body with a top end and a bottom end, an upper section on the top end having a generally flat surface facing away from the bottom end and a stop surface that faces toward the bottom end; an upper conical section that is integral with the upper section and has an upper conical surface that joins the stop surface; a lower conical section that is integral with the upper conical section and has a lower conical surface that joins the upper conical surface and a flat bottom surface that intersects a center line of the lower conical surface at an angle of less than 90.degree.; a cutting edge formed at the junction of said flat bottom surface and the lower conical surface at the bottom end of the body; an air vent passage through the body that intersects the generally flat surface on the upper section and the flat bottom surface; and wherein a large diameter end of the upper conical surface joins a large diameter end of the lower conical surface.