| 摘要 |
<p>A hydraulically driven tool, such as a wrench or a drill, includes a handle having heat resistant properties, a bypass valve, and a spring-biased relief valve. The bypass assembly varies the hydraulic motor revolutions per minute (rpm) of the tool which controls the torque of a driven mechanical mechanism, such as used on an impact wrench. The spring-biased relief valve assembly limits the maximum revolutions per minute of a gear motor of the tool.</p> |
