An ergonomic hand tool for enhancing the leverage available to a user includes a frame having a distal portion and a proximal portion, and a working element operably coupled to a distal end of the distal portion. The frame further includes a handle that is pivotally coupled to the frame at a portion...http://www.google.es/patents/US7093667?utm_source=gb-gplus-sharePatente US7093667 - Ergonomic hand tool
