US Patent 7137356 Pet-safe nail and claw clippers

A claw cutter incorporates a sensor device and scan system technology into a hand-held trimming device that locates the location for a proper cut, avoiding cutting the quick and avoiding pain to the animal. The scan system technology may include a light sensor, an infrared sensor, a laser sensor, an ultrasonic sensor, or an intensity transducer. A control circuit determines the position status of the cutting device and via audible and or visual alert advises the clipper operator that the clippers are positioned in either an unsafe zone or a safe zone for cutting the claw.