The system for suspending a valve exerciser from a support comprises a base element for mounting on the support, a first support element pivotally mounted on the base element, a second support element pivotally mounted on the first support element, a linking element pivotally mounted on the first support...http://www.google.ca/patents/US7703473?utm_source=gb-gplus-sharePatent US7703473 - Valve tester suspension assembly
