Abstract
News editors obtained the following quote from the background information suppli ed by the inventors:“Automatic swimming pool cleaners include components for dr iving the pool cleaners along the floor andsidewalls of a swimming pool, either in a random or deliberate manner. For example, conventional pressureside clean ers and suction cleaners often use hydraulic turbine assemblies as drive systems to drive one ormore wheels. Robotic cleaners often include a motor or other me chanical system powered by an externalpower source to drive one or more wheels.
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