| 摘要 |
A novel fluid container system comprises a container having a port at an upper end through which port fluid is permitted to pass for emptying the container. A restricter is provided within the container for momentarily restricting fluid flow out of the port when the container is inverted, the restricter having a construction such that a restricted fluid flow is permitted through the port for a period of time when the container is inverted, after which period of time a substantially less restricted fluid flow is permitted through the port. A retainer retains the restricter in the vicinity of the port. The retainer is disposed on an inner surface of the upper end of the container and extends inwardly from the inner surface. The retainer can include a substantially horizontal arcuate member or a circular member. Furthermore, the retainer can comprise at least one vertical member wherein the vertical member includes an inwardly extending abutment for preventing the restricter from falling downwardly when the container is disposed in the upright position. The restricter includes a ball which is buoyant in the fluid, which ball has a diameter greater than a diameter of the container port wherein the restricter includes a device disposed on the inner surface of the container for preventing the ball from forming a fluid-tight seal over the port.
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