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By providing visual feedback, Eco prevents over-filling the kettle and consequently decreases the chance of over-boiling water. Initially, when the kettle is cold, the spout is facing the handle (Inspired by the coffeepot for masochists) which means it is impossible to pour water out of it but the lid can be opened and the kettle can be filled. By putting it on the stove, the shape memory spring, located at the center of the main body, reacts to the heat and gradually rotates the lid toward the natural form (spout and handle at the opposite sides), enabling the user to pour hot water out of it and securely locking the lid for safety reasons.
Arizona State University
Tempe, AZ, United States