The invention relates to a device for controlling and monitoring a conveyor belt which is made of rubber or a rubber-like plastic material and preferably provided with embedded reinforcements. By overlapping of the longitudinal edges of the conveyor belt the belt can be closed such that it forms a tubular...http://www.google.com/patents/US6712199?utm_source=gb-gplus-sharePatent US6712199 - Device for controlling and monitoring a conveyor belt, notably a tubular conveyor belt
