US Patent 7594574 Thermoplastic belt connector

A thermoplastic toothed belt connector (10, 50) for making an endless belt (12) has two leaves (20, 22, 58, 60), adapted to be hingedly connected to each other by knuckles (28, 30, 60, 62) along one or more teeth (38, 52, 54). Each knuckle (28, 30, 60, 62) has a hole (42, 72) extending through tooth portions (39) so that when the holes (42, 72) are in the registry, a pin (32, 74) can be extended through the holes (42, 72) to form the hinge at the teeth (38, 52, 54). The leaves (20, 22, 58, 60) can be adjoined to the ends of a thermoplastic belt (12) to make the belt endless.