Beverage Can Double Opening Ring for Controlled Venting
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Solution Overview
Problem
Existing beverage can opening systems require cumbersome steps to open the venting opening, leading to inefficient air entrance and messy liquid exit, as users often skip the additional steps due to complexity.
Innovation Solution
A double opening system for beverage cans featuring a secondary lever mounted on the same rivet as the main ring, with a buffer mechanism to prevent accidental air entrance perforation, allowing for a single, efficient operation to open both liquid and air orifices with minimal user effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single opening system is used for beverage cans, then the device complexity is low, but the liquid gushes out messily due to uncontrolled air entrance
Solution Approach 1:
The opening system is segmented into two independent functional components: a main ring for creating the liquid outlet orifice and a secondary lever for creating the air entrance orifice. This segmentation allows independent control of liquid flow and air intake, preventing messy gushing while maintaining manageable device complexity through modular design.
Solution Approach 2:
The main ring and secondary lever are combined into a single integrated opening system that operates through one user action. The secondary lever is pivotally mounted on the same rivet as the main ring, and the buffer mechanism couples their operations so that lifting the main ring automatically triggers the secondary lever to create the air orifice, merging two functions into one coordinated action.
2Reliability
If a double opening system with separate operations is used, then controlled air entrance is achieved, but the ease of operation deteriorates due to multiple cumbersome steps
Solution Approach 1:
The secondary lever is pre-positioned and pre-loaded against the buffer during normal can storage. When the user lifts the main ring, the secondary lever is already in position to be automatically triggered, eliminating the need for separate user actions to activate it. This preliminary positioning ensures controlled air entrance while maintaining ease of operation.
Solution Approach 2:
The buffer acts as an intermediary mechanism between the main ring and secondary lever. It translates the upward motion of the main ring into the downward motion of the secondary lever, automatically coordinating the two opening actions. This intermediary eliminates the need for complex multi-step user operations while ensuring reliable controlled air entrance.
3Ease of operation
If the secondary lever is directly connected to the main ring, then the ease of operation is improved, but accidental air entrance perforation may occur
Solution Approach 1:
The buffer serves as a protective cushion that prevents the secondary lever from accidentally contacting and perforating the air entrance die cut during normal handling. It allows the lever to be connected to the main ring for coordinated operation while providing beforehand protection against unintended activation, ensuring reliability while maintaining ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures controlled and efficient opening of both liquid and air orifices, preventing messy liquid exit and reducing user effort, while preventing accidental air entrance perforation through the buffer mechanism and lever design.
Implementation Method 1
The secondary lever for tearing the die cut for the air entrance, and which is mounted on the same rivet as the main ring for tearing the die cut for liquid to exit, features one or two pointed hammers for perforating the lid
Implementation Method 2
the free end of this lever being supported on a buffer provided for this purpose on the main ring, for precisely preventing that lever from not acting until the tearing of the die cut which establishes the liquid outlet orifice by means of the main ring has been carried out
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The lid of a beverage can has two punched segments, breaking of which forms the respective openings for allowing the liquid to flow out and the air to enter. Breaking of these punched parts is performed by pivoting upwards a main ring mounted on a rivet of the lid and, after breaking open the punched part, pushing downwards a secondary lever with cutting pressure pieces which cut into the punched parts so as to cause breakage thereof. The said secondary lever is mounted on the same rivet, having an end segment which rests against a stop of the ring in order to prevent in the rest condition the pressure pieces cutting into the punched parts. In another simpler embodiment, the secondary lever is dispensed with, so that the pressure piece is incorporated along the contour of the associated main ring.