Webasto has filed a patent for a see-through assembly for a motor vehicle environment sensor. The assembly includes a cleaning feature with a membrane or shape-changing layer to remove foreign particles. The control feature enables movement for effective cleaning. GlobalData’s report on Webasto 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 Webasto, Hydrogen fuel cells was a key innovation area identified from patents. Webasto's grant share as of January 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.

Self-cleaning see-through assembly for vehicle environment sensor

Source: United States Patent and Trademark Office (USPTO). Credit: Webasto SE

A patent application (Publication Number: US20240019557A1) describes a see-through assembly for an environment sensor in a motor vehicle. The assembly includes a see-through area, a control feature, and a cleaning feature with a membrane spaced apart from the outer surface of the see-through area. The control feature is designed to move the membrane or a shape-changing excitation layer in a predetermined manner to loosen and remove foreign particles on the outer surface, which can include organic/inorganic particles, dirt, insects, water droplets, snow, or ice crystals. The assembly may also include a heating feature, cleaning nozzles, wiper elements, pumps, control valves, compressors, and piezoelectric/magnetic-stroke-based excitation features to facilitate cleaning.

Furthermore, the patent application also covers a roof module for a vehicle roof incorporating the see-through assembly and environment sensors to detect the vehicle environment. The method for cleaning the see-through area involves moving the membrane or excitation layer according to a predetermined profile to remove foreign particles. The excitation layer may comprise a shape memory material. The innovative design aims to ensure clear visibility through the see-through area for accurate sensor readings and enhanced safety while driving. The patent application highlights the importance of efficient cleaning mechanisms in maintaining optimal functionality of environment sensors in motor vehicles.

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