Ribbed Beverage Lid Rim for Leak-Proof Sealing and Stable Stacking
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Solution Overview
Problem
Existing disposable lids for beverage containers are prone to leakage and accidental spillage due to inadequate sealing, are difficult to secure properly, and are unstable when stacked, leading to waste and sanitation issues.
Innovation Solution
A lid design featuring double parallel inner ribs for secure sealing, an outer side wall gripping feature, a pronounced elevated sipping spout with a curved rear surface for stability, and a circular indented channel for stacking, allowing for visual inspection of the secure fit and providing additional stability when stacked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple annular rim is used for fastening, then the lid can be easily manufactured, but the sealing reliability is poor and the lid easily becomes separated from the container
Solution Approach 1:
The circumferential rim is segmented into multiple functional components including an annular flange, an annular groove, and multiple ribs (first rib, second rib, third rib). This segmentation allows each component to perform a specific function: the flange provides structural support, the groove creates a sealing interface, and the ribs provide gripping features and additional sealing surfaces. This resolves the contradiction by maintaining manufacturing simplicity while significantly improving sealing reliability through functional specialization of rim segments.
Solution Approach 2:
Different regions of the rim are given different local qualities and functions. The annular flange has a first surface for gripping, the annular groove provides a sealing channel, the first rib provides a secondary sealing surface, and the second rib provides a third sealing surface. This local differentiation allows the rim to simultaneously provide structural integrity, multiple sealing interfaces, and gripping features, resolving the contradiction between simple manufacturing and reliable sealing.
2Productivity
If the lid is quickly applied to the container, then the application process is fast, but the lid may not be properly secured and gaps may form causing leakage
Solution Approach 1:
The rim is pre-configured with the annular groove and multiple ribs positioned at specific locations before the lid is applied to the container. The annular groove is pre-formed to match the container opening, and the ribs are pre-positioned to engage with the container surface. This preliminary configuration ensures that when the lid is quickly applied, the sealing interfaces are already properly aligned, eliminating the need for precise manual adjustment and ensuring reliable sealing even during rapid application.
Solution Approach 2:
The multiple ribs and annular groove are designed to automatically engage with the container surface when the lid is placed on the container. The gripping surface of the annular flange and the sealing surfaces of the ribs self-align with the container, providing automatic securing without requiring precise manual positioning. This self-service mechanism allows for fast application while maintaining high sealing accuracy.
3Device complexity
If the container is bent or handled roughly, then the lid may become dislodged due to gaps in the sealing, but a more complex sealing mechanism might prevent this
Solution Approach 1:
The rim is divided into multiple segments (annular flange, annular groove, first rib, second rib, third rib) that work together to provide redundant sealing and securing functions. If one sealing interface is compromised due to container bending or rough handling, the other segments continue to provide sealing and gripping, preventing lid dislodgement. This segmentation provides fault tolerance without requiring overly complex mechanisms.
Solution Approach 2:
The multiple ribs and annular groove create a multi-layered sealing system that anticipates potential failures. The first rib provides a primary sealing backup, the second rib provides a secondary backup, and the third rib provides a tertiary backup. This beforehand cushioning ensures that even if the container is bent or handled roughly, multiple sealing interfaces remain intact to prevent lid dislodgement and leakage.
4Adaptability or versatility
If stacked lids are placed one on top of another, then storage space is optimized, but the lids become unstable and may fall causing sanitation issues
Solution Approach 1:
The top surface of the lid is designed with a curved configuration that complements the curved bottom surface of another lid. This curvature allows stacked lids to nest together smoothly, distributing weight evenly and preventing sliding. The curved surfaces create a stable interlocking arrangement that maintains stack stability while enabling vertical stacking for optimized storage space.
5Device complexity
If the aperture is positioned close to the annular wall for compact design, then the lid structure is more compact, but the user's lip contacts irregular surfaces creating poor drawing conditions and promoting spillage
Solution Approach 1:
The aperture region is given a specialized local quality with a smooth, rounded configuration that is distinct from the rest of the lid structure. The aperture is positioned to be spaced from the annular wall, creating a localized smooth drawing surface that is optimized for user comfort. This local quality differentiation allows the aperture area to provide excellent liquid drawing conditions while the rest of the lid maintains its structural compactness.
Data Source
AI summary
A lid for securing to the brim of a container, the lid including a container closure having a disk shaped member with a periphery for mating with the brim of the container. The periphery includes annular inner and outer side walls with at least one annular rib disposed on each of the inner and outer side walls. The ribs of the annular walls form a gripping area to secure the lid to the container for preventing leaks and accidental spillage. A top wall interconnects the inner and outer side walls and includes visual cues for viewing the brim of the container when the lid is affixed to the brim. The lid additionally includes a pronounced wedge shaped sipping spout projecting upwards from the container closure. The container closure includes a circular indented channel for stacking one lid covered cup over another with additional stability provided by the sipping spout.