Electric hair cutter with continuously variable cutting length adjustment; has electronic measuring arrangement to measure length of hair from hair root area to cutting place

摘要

The electric hair cutter has an electronic measuring arrangement near a cutting element (1). The measuring arrangement continuously measures the hair length from a hair root area until the cutting place. The measuring arrangement consists of two parallel rollers (3), which are rotated to determine the length of the hair, and compares the measured and desired lengths.