US Patent 7921566 Hair trimmer

A hair trimmer includes a main body, a cutter block and a comb attachment. The cutter block has a stationary blade and a movable blade, both of which are comb-shaped and are slidably in contact with each other. In addition, the cutter block is protrudingly installed at one end of the main body. The comb attachment has a plurality of comb tooth-shaped sections and covers the cutter block. The comb tooth-shaped sections are provided with cut-off hair deflectors to prevent hairs cut by the cutter block from outwardly scattering away from the comb attachment. Furthermore, cut-off hair deflectors located between two neighboring comb tooth-shaped sections are disposed at relatively inner and outer positions.