Patent ID: 7708314

Claim:
Emergency cutting device ( 1 ) for vehicle safety belts, wherein it comprises locking means ( 6 , 7 ), acting on a safety belt ( 3 ) so as to put the same under tension; means ( 8 ) for cutting said safety belt ( 3 ); and operation means ( 12 , 13 ), operatively connected with said locking means ( 6 , 7 ) and with said cutting means ( 8 ); said operation means ( 12 , 13 ) activating in succession said locking means ( 6 , 7 ) and said cutting means ( 8 ), so as to cut said safety belt ( 3 ), and then deactivating said locking means ( 6 , 7 ) and free said safety belt ( 3 ) and a user of the safety belt said locking means comprising a first and a second clamp ( 6 , 7 ), closable to lock said safety belt ( 3 ), and a first and a second piston ( 9 , 10 ), parallel to each other that said first and said second pistons ( 9 , 10 ), are coupled, respectively, to said first and said second clamp ( 6 , 7 ), to close and open said first and said second clamp ( 6 , 7 ).