| 摘要 |
A cap system for a container includes a cap that can be coupled to an open top of a container. The cap incorporates a hole that provides for fluid communication with an interior region of the container. A closure element movably coupled to the cap defines a solid region and an open region. The closure element is disposed at an angle with respect to a portion of the cap. At least one weight is coupled to the closure element such that the closure element moves as gravity acts thereon to align the closure element's solid region with the hole when the cap is in a first or upright orientation, and to align the open region with the hole when the cap is in a second or tipped orientation. |
