Off-Centre Carafe Opening for Easier Pouring and Level Indication
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Solution Overview
Problem
Conventional stainless steel thermally insulated carafes with concentric openings are inconvenient for dispensing coffee, as they require inversion and lack transparency for level indication, compromising heat retention and usability.
Innovation Solution
A metallic thermally insulated carafe with an off-centre opening and integrated level detection mechanism, utilizing spinning and pressing technologies to create a vacuum chamber with a polymeric superstructure for improved pouring and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a concentric opening is used in a stainless steel thermally insulated carafe, then heat retention is improved, but dispensing convenience deteriorates as the carafe must be nearly inverted to dispense entire contents
Solution Approach 1:
The patent applies asymmetry by positioning the opening off-center relative to the carafe's longitudinal axis. This asymmetric placement allows the opening to be located at the optimal position for both heat retention and dispensing convenience, eliminating the need to invert the carafe while maintaining thermal insulation effectiveness.
2Reliability
If stainless steel is used for the carafe, then durability and heat retention are improved, but transparency for level indication deteriorates
Solution Approach 1:
The patent applies color changes by incorporating a level indicator mechanism that provides visual feedback through color or position changes. This allows users to easily detect the coffee level in the opaque stainless steel carafe, compensating for the lack of transparency while maintaining the durability and heat retention benefits of metal construction.
3Volume of stationary object
If a wide body shape is used to maximize carafe volume, then capacity is improved, but dispensing convenience deteriorates as the carafe must be nearly inverted
Solution Approach 1:
The patent applies asymmetry by positioning the opening off-center, which allows the carafe to maintain a wide body shape for maximum volume while enabling convenient dispensing without inversion. The asymmetric opening position optimizes the geometry for both capacity and 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 off-centre opening allows for convenient dispensing without inverting the carafe and provides a level indicator, enhancing usability and heat retention while addressing the lack of transparency in metal carafes.
Implementation Method 1
inner and outer cylindrical side walls that define a vacuum chamber
Data Source
AI summary
A vacuum insulated carafe has a stainless steel body, with a stainless steel outer sidewall closed off, in part, by a cap. The cap has an eccentric opening and a reservoir affixed to the rim. The eccentric opening of the cap forms an off centre mouth that leads into the interior of the reservoir.