Vorwerk has been granted a patent for a food preparation apparatus with an electrical heating device using PTC thermistors connected in parallel to avoid local heating during food preparation. The design includes at least three PTC thermistors arranged in a circular path with electrical bridges connecting them. GlobalData’s report on Vorwerk gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Vorwerk, was a key innovation area identified from patents. Vorwerk's grant share as of May 2024 was 52%. Grant share is based on the ratio of number of grants to total number of patents.
Food preparation apparatus with parallel-connected ptc thermistors
A recently granted patent (Publication Number: US11997765B2) discloses a food preparation apparatus that includes an electrical heating device with at least two electrical PTC thermistors for heating food in a designated space. These thermistors are connected in parallel and arranged in a circular path around a center point, with each thermistor connected to adjacent ones through electrical bridges. The apparatus also features specific configurations for the PTC thermistors, electrical bridges, and electrical conductors to optimize heating efficiency and control temperature.
Furthermore, the patent details various embodiments of the food preparation apparatus, including the use of specific materials for the PTC thermistors, bridges, and electrical conductors, as well as the incorporation of temperature-dependent switches for safety measures. The apparatus can accommodate a significant number of PTC thermistors, with options for internal or external circulation of the electrical conductor. Additionally, the design allows for meandering paths of the PTC thermistors and bridges, forming a serpentine shape for enhanced heating distribution. Overall, the patented food preparation apparatus offers a novel and efficient way to heat food using electrical PTC thermistors, with a focus on optimizing performance and safety through various design features and configurations.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
