Extension Collar for Pail Mixing Headspace and Splashing
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Solution Overview
Problem
Standard containers for wallboard joint compound lack sufficient headspace to accommodate additional water needed for mixing, leading to splashing issues when using powered mixers.
Innovation Solution
An extension collar that fits onto standard pails, increasing their height by 3-5 inches to accommodate extra water and featuring radially extending ribs for stability, clips for securement, a seal to prevent leaks, and a mount for powered mixers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the pail is filled to near the top edge with joint compound, then the container capacity is maximized, but there is insufficient headspace to accommodate additional water for mixing
Solution Approach 1:
The extension collar increases the vertical dimension (height) of the pail by adding 3-5 inches of headspace, allowing water to be added without removing joint compound. This dimensional extension resolves the contradiction between maximizing compound capacity and providing mixing headspace.
2Quantity of substance
If the pail is filled to near the top edge with joint compound and water, then the container capacity is maximized, but material flies out during drill mixing causing splashing
Solution Approach 1:
The extension collar provides a buffer zone or cushion of additional headspace above the joint compound and water mixture. This pre-established space prevents material from flying out during drill mixing, thereby eliminating splashing while maintaining maximum mixing capacity.
3Volume of moving object
If a larger pail is used to accommodate additional water, then sufficient headspace is provided, but customers feel they are not receiving all the joint compound they paid for
Solution Approach 1:
The extension collar acts as an intermediary component that provides additional headspace without changing the pail size or joint compound quantity. It mediates between the need for mixing space and the customer's expectation of receiving the full purchased amount, as the collar is removable and does not displace compound.
Solution Approach 2:
The solution segments the headspace provision from the pail itself by using a separate, removable extension collar. This allows the pail to remain at its original size for compound storage while adding temporary height for water mixing, preventing customer perception of reduced compound quantity.
4Volume of moving object
If the extension collar is made tall to provide sufficient headspace, then water accommodation is improved, but the collar structural stability decreases
Solution Approach 1:
The extension collar employs local quality enhancement through radially extending strengthening ribs positioned at critical locations. These ribs provide localized structural reinforcement that maintains collar stability and prevents buckling despite the tall, thin-walled construction needed for sufficient headspace.
Data Source
AI summary
An extension collar is provided for use with a pail having an opening and containing mixable building material. The collar includes an annular body with an upper edge, an opposite lower edge, and a sidewall connecting the edges. In addition, the body has a diameter that is complementary to, and insertable into the opening of the pail such that upon insertion into the pail, the collar adds to a height of the pail.