| 摘要 |
This torque wrench comprises a tool holder and a handle articulated to one another and connected by a hydraulic coupling, which comprises a piston 10 actuated by the tool holder 1 and delivers a hydraulic fluid against the action of a valve 30, 34 calibrated as a function of the maximum torque to be exerted on the wrench, and a flexible reservoir 46 equipped at its end close to the valve 30, 34 with at least one orifice 50 for the passage of the fluid delivered by the piston 1, and a collar 48 for sealed contact with the internal wall of the handle 3. An orifice 52 passing through the wall of the handle 3 puts the space between the flexible reservoir 46 and this wall in communication with the atmosphere. <IMAGE>
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