PRECISION TORQUE TOOL

• Main Authors: TIMMONS, Terry, NEITZELL, Roger D, LIMBERG, Kurt
• Format: Patent
• Language: English; French; German
• Published: 09.01.2019
• Subjects: BLASTING; BRAKES; CLUTCHES; COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDEDFOR; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; COUPLINGS FOR TRANSMITTING ROTATION; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOTPARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOTOTHERWISE PROVIDED FOR; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HAND TOOLS; HEATING; LIGHTING; MANIPULATORS; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; THERMAL INSULATION IN GENERAL; TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

A power tool includes a housing (302); a motor (306) supported in the housing (302); a multistage transmission (310) operably coupled to the motor (306) to receive torque from the motor (306); an output shaft (314) rotatable about a central axis (318) and operably coupled to the transmission (310) to receive torque from the transmission (310); a clutch mechanism (514) coupled to the transmission (310) and operable in a first mode, in which torque from the motor (306) is transferred to the output shaft (314) through the transmission (310), and operable in a second mode, in which torque from the motor (306) is diverted from the output shaft (314); a shift mechanism (658) coupled to the transmission (310) and operable to disable at least one stage (338, 342, 346) of the transmission (310); and a mode selector ring (634) coupled to the shift mechanism (658) to actuate the shift mechanism (658) in response to rotation of the mode selector ring (634); wherein the clutch mechanism (514) includes a resilient member (566), and wherein, in response to rotation of the mode selector ring (634), the resilient member (566) is compressible to increase the amount of torque transferred to the output shaft (314) during the first mode of operation of the clutch mechanism (514).