| 摘要 |
A self venting funnel including a hollow member having inner and outer walls, two ends and a through passage defined by the inner wall and extending between the ends. The inner and outer walls are spaced from each other and define a region therebetween that includes a plurality of vent passages that extend between the two ends and which form a plurality of apertures in each end. The self-venting funnel further includes a chamber that extends outward from the outer wall and an overflow port or passage that extends through the region and between the inner and outer walls. If, and when, the level of material accumulating in the through passage rises so it is at or above the overflow port, the material flows into the chamber. The chamber also may include an outlet connection to automatically drain material from the chamber. A screen may be disposed within the hollow member through passage to filter the material passing through the funnel of the instant invention. The funnel may further include a shield member at one end of the funnel to direct any material flowing through any of the vent passages back into the through passage of the hollow member.
|
