TORQUE INDICATOR RATCHET WRENCH FOR DENTISTRY

摘要

Ratchet wrench and a torque indicator combined concentrically in a single housing. The ratchet wrench is useful for driving a fastener used in dentistry. In operation, the handle of the wrench can be rotated in one direction to impart torque on the fastener. When the handle is rotated in the opposite direction, no torque is applied to the fastener as the handle is returned to a position where it is easy for the clinician to again rotate the handle to apply additional torque to the fastener. To provide an indication of torque, a rotor body is supported coaxially within the driver member. Torque indicator marks on the rotor body and the driver member indicate angular displacement of the driver member around the common axis relative to the rotor body when a tool held in the rotor body is restrained from turning under load.