The torque imposed on premium thread connections between tubular goods is monitored and plotted as a function of time rather than the number of turns. In this manner, the torque at which "shoulder", either by metal-to-metal sealing contact or otherwise, is achieved during make-up of the premium connection...http://www.google.com/patents/USRE34063?utm_source=gb-gplus-sharePatent USRE34063 - Monitoring torque in tubular goods
