Venting Cap With Perimeter Recesses For Dust Control
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Solution Overview
Problem
Conventional venting caps for containers with high viscosity liquids allow direct access to the venting opening, leading to contamination from dust and foreign particles, which can cause issues during the pouring process, especially in environments with swirled-up debris.
Innovation Solution
The venting cap features a cap skirt closed along its periphery with elongate recesses forming venting passages that direct air flow past the thread and retaining lugs, preventing larger dirt particles and dust from entering the container, while ensuring secure engagement with the venting spigot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the venting cap is released from the venting spigot to allow air flow during pouring, then the liquid can be poured out continuously without reduced pressure, but the opening of the venting spigot becomes accessible and air can pass into the interior of the cap directly through the venting openings, leading to contamination from dust and foreign particles
Solution Approach 1:
The cap skirt acts as an intermediary component that channels air flow through a controlled path. The venting openings are positioned in the cap skirt, which forces air to flow along the outside surface of the cap skirt rather than directly into the cap interior, thus preventing dust and particles from contaminating the liquid while still allowing air to enter for continuous pouring
Solution Approach 2:
The solution changes the dimension of air flow by directing it along the external surface of the cap skirt rather than through direct openings into the cap interior. The venting openings in the cap skirt create a three-dimensional flow path that bypasses the direct line-of-sight access to the cap interior, effectively separating the air intake function from the contamination risk
2Productivity
If openings are provided in the cap skirt near the head plate for air flow, then air can pass into the container to prevent reduced pressure, but these openings provide direct access to the venting opening, allowing dirt and dust to penetrate into the container
Solution Approach 1:
The cap skirt serves as a mediator that allows air flow while blocking contaminants. The venting openings are formed in the cap skirt material itself, which forces air to travel along the external surface of the cap skirt to reach the venting spigot opening, preventing direct access for dust and particles while maintaining the air intake function for continuous pouring
Data Source
AI summary
The present invention concerns a venting cap for liquid containers which besides a pouring opening also has a venting opening with a venting spigot provided with a corresponding venting cap. The venting cap has a closed head plate and a cap skirt which extends downwardly from the head plate and has at least one cylindrical portion having a female thread, wherein above the female thread the cap skirt has a venting portion at which there are provided at a spacing relative to the head plate retaining lugs which extend radially inwardly and define a free inside radius which is smaller than the inside radius of the thread.