US Patent 7581319 Electric trimmer with integrated blade switching means

The invention is an improved electrical hair trimmer having an internal cleaning tray that cleans dirty cutting blades. Located adjacent to the cleaning tray is an internal conveying means that enables a dirty cutting blade to be removed and a cleaned cutting blade to be installed without the use of an external mechanism. The main benefit of this invention is to provide an electrical hair trimming tool that can automatically remove and clean a used and dirty cutting blade.