Nut tightening and loosening device, has spring provided for connecting wrench to bushing and setting wrench in mechanical tension above associated nut in extension state

摘要

The device has a wrench (3) presenting a head (8) in which a nut is arranged, and an elongated body (10) on which an operator acts. The wrench has a protrusion in the rear portion of the body. A bushing (6) is fixed above another nut, and a spring (4) is provided for connecting the wrench to the bushing. The spring sets the wrench in mechanical tension above the associated nut in an extension state.