| 摘要 |
<p>Self-adjusting pliers for grasping a work piece include first and second plier members each including a handle portion, a jaw portion, and an intermediate portion therebetween. The self-adjusting pliers include a first pivot pin about which the first and second plier members pivot permitting the jaw portions to converge on a work piece and grasp the work piece in response to initial movement of the handle portions toward each other. The self-adjusting pliers further include a second pivot pin about which the pliers pivot once pivoting has been terminated about the first pivot pin so as to permit a further grasping force to be applied to the work piece in response to continued movement of the handle portions toward each other. The second pivot pin is closer to the jaw portions than the first pivot pin to allow for a greater mechanical advantage to be obtained. The self-adjusting pliers also include a biasing spring for biasing the handle portions away from each other and the jaw portions away from each other. Self-locking pliers are also provided, either in combination with the self-adjusting pliers or individually, for automatically locking the jaw portions into engagement with a work piece.</p> |
