Patent ID: 7570045

Claim:
An attachment device for fastening an electrical cable monitoring instrument to an electrical cable comprising: a monitoring instrument sensor arranged in a configuration of at least half a toroid like structure having at least one opening for positioning the electrical cable to pass through a sensitive volume at least partially surrounded by said sensor, at least one elongated elastic member securely attached to said cable monitoring instrument arranged that, when elastically deformed to a shape characterized by high mechanical energy, the deformed elastic member allows said electrical cable access to and from the sensitive volume at least partially surrounded by said monitoring instruments sensor, wherein said elongated elastic member, when relaxed to the a shape characterized by lower mechanical energy than said shape characterized by high mechanical energy, with the electrical cable positioned to pass through said sensitive volume, applies an elastic force to said electrical cable to hold the electrical cable passing through the sensitive volume firmly and securely in contact with the cable monitoring instrument with no relative motion.