A cap includes an upper cap portion to enclose an opening of a bottle and hold a dosage of fluid, a lower cap portion to extend into the bottle and increase the dosage capacity of the cap, and a skirt configured to engage the exterior surface of the bottle to secure the cap to the bottle. The upper cap portion includes a top and a first sidewall having one or more sections that protrude radially away from other portions of first sidewall.

An airtight container including a container body having a neck with an opening at one end, a cap having inside a portion having a convex lower end side and attaches to the neck, and a packing. A vertical cross-section of a mouth of the opening forms an upwardly convex curve. The packing has a first concave portion formed on the outer rim of the upper surface, a second concave portion formed on the lower surface sharing a bottom with the first concave portion, and a bent portion radially outboard of the center of the packing and radially inboard of the first and second concave portions are formed, to generate stress that widens the first concave portion and narrows the second concave portion when the cap is attached and the inner surface of the second concave portion is contacted against the mouth of the opening of the neck.

A container having a cylindrical pouring nozzle with an external thread and with a stop; a cap with an internal thread which can be screwed onto the external thread of the pouring nozzle as far as an end position in which the cap bears in the direction of rotation on the stop of the pouring nozzle; and a seal made of a material which is softer than a material of the cap and a material of the pouring nozzle. The seal is fixedly connected to the cap and has a first sealing element which, with the cap screwed on, is arranged in a radial direction between the cap and pouring nozzle and bears on a lateral surface portion of the pouring nozzle.

The containment system includes a lid having a gasket and a first threaded connection, one or more insertable receptacles having a flange which includes nesting geometry, and a jar having a second threaded connection, wherein the lid and the jar connect via the first threaded connection and the second threaded connection. In some configurations, the flange(s) of the insertable receptacle(s) are disposable between the gasket and a top lip of the jar when the lid and the jar are connected.

An airtight container including a container body having a neck with an opening at one end, a cap having inside a portion having a convex lower end side and attaches to the neck, and a packing. A vertical cross-section of a mouth of the opening forms an upwardly convex curve. The packing has a first concave portion formed on the outer rim of the upper surface, a second concave portion formed on the lower surface sharing a bottom with the first concave portion, and a bent portion radially outboard of the center of the packing and radially inboard of the first and second concave portions are formed, to generate stress that widens the first concave portion and narrows the second concave portion when the cap is attached and the inner surface of the second concave portion is contacted against the mouth of the opening of the neck.

A container assembly includes a container having a neck, a cap removably coupled to the neck, and a spout disposed in the neck. The cap includes an upper cap portion and a skirt configured to be received on a rim of the neck. The skirt includes a skirt sidewall and a skirt flange extending radially between a sidewall of the upper cap and the skirt sidewall. The spout includes a central duct extending through an opening of the neck and defining a pouring passage in communication with an interior of the container. The spout includes an outer sidewall extending around the central duct. The spout includes a seal ring disposed on an upper end of the outer sidewall of the spout. A bottom surface of the skirt flange is inclined downward in a direction toward the neck of the container at an angle between about 1° and about 10°.

A metal screw cap for a beverage bottle consisting of a dome and a cylinder having internal thread adapted to co-operate with a threaded neck of the bottle and a liner affixed to the inner surface of the screw cap, where the dome is concave and is connected with the cylinder through a top ring, where between the dome and the top ring there is a circumferential groove having the radius of the inner curvature.

A hazardous material shipping container comprises a shell having a first threaded portion at a first end thereof, a closed second end opposite the first end, inwardly extending ribs, and outwardly extending flutes, wherein the ribs and flutes are disposed between the first end and the second end. A cushioning material is inside the shell, and a cap has a second threaded portion adapted to mate with the first threaded portion and a recess on a lower surface wherein the recess is adapted to receive an upper portion of a material container.

A container a side surface and a rim that defines an opening and an axis; a closure for the container; the container and closure having cooperating threads to move the closure axially as it is rotated; the closure having a seal against the side surface of the container; the thread portions of the container and closure are configured such that, as the closure rotates relative to the container, the seal moves parallel to the axis contacting three regions on the side surface of the container: a first region, configured such that, as the seal is moved across the region, the seal changes between states in which it is uncompressed and compressed between the container and closure; a second region, where the fluid bypasses part of the seal; and a third region where the seal forms a fluid-tight seal between the side surface and the closure.

What is presented is a method of forming a closure with a sealing gasket in an injection molding machine that has a center rotating cube. The center rotating cube comprises a plurality of mold back halves each comprising cores and a thread unscrewing mechanism. Each core is shaped to form a closure that has a thread and an anti-rotation feature. The method comprises the steps of forming a closure with a through hole, rotating the core to create a gap between the formed closure and the core, and injecting a compressible material through the through hole and into the gap to form a sealing gasket.