| 摘要 |
A torque tool having a spring bar and plunger normally positioned in axial alignment with a cylindrical roller seated therebetween in opposing channels formed in the ends of the spring bar and plunger whereupon a predetermined torque being applied on said spring bar the roller is caused to roll up diagonally opposite vertical walls of the mating channels. This movement allows the bar limited relative movement with respect to the plunger, the bar colliding with the inner wall of the tubular housing surrounding the spring bar and plunger to produce an audible warning sound.
|
