AB Electrolux has been granted a patent for a laundry washing machine with an innovative additive loading and supply system. The system includes a dispenser tray for cleaning products and a unique tub supply pipe design for efficient use of unit dose packages. GlobalData’s report on AB Electrolux 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 AB Electrolux, Cleaning robots was a key innovation area identified from patents. AB Electrolux's grant share as of January 2024 was 65%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for laundry washing machine with unit dose package

Source: United States Patent and Trademark Office (USPTO). Credit: AB Electrolux

A laundry washing machine patent (Publication Number: US11879202B2) has been granted, detailing a unique design for an additive loading and supply system. The system includes a dispenser tray with receptacles for cleaning products, valves for water supply, and a tub supply pipe connecting the system to the washing tub. A key feature is a retainer in the tub supply pipe that holds unbroken unit dose packages vertically, allowing water to pass through only when the package is broken. Various embodiments of the retainer include perforated plates, wire mesh, rods, or ribs, with additional features like nozzles to direct water onto the package and knives or pins to break it. The retainer can be retractable and located in an openable compartment for ease of use.

Furthermore, the patent describes variations in the retainer design, such as the use of knives or spikes to break the package, and the inclusion of one or more nozzles in the first portion of the tub supply pipe to direct water onto the package as it moves. The retainer is positioned strategically in the flow path between the additive loading system and the washing tub, ensuring efficient delivery of cleaning products. The system's design allows for the selective flushing of unbroken unit dose packages into the retainer, enhancing the overall functionality of the laundry washing machine. These innovative features aim to improve the user experience and the effectiveness of the cleaning process in a laundry setting.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.