| 摘要 |
A slip-joint pliers (20) has crossed pivoting levers (30, 50) joined at pivot portions thereof by a flat-sided bolt (75) extending through openings in the levers (30, 50) and engaged with a nut (78), one of the openings (60) being elongated and generally dumbell-shaped to accommodate the slip-joint movement. The pivot portions of the levers (30, 50) have flat facing inner surfaces (34, 54), in each of which is formed a single-level spring recess (35, 55) surrounding the associated opening, each recess (35, 55) having a peripheral side wall and a flat planar bottom wall extending from the side wall to the associated opening. A helical torsion spring (70) is seated in the recesses and encircles the bolt (75) and has tangent ends respectively engageable with straight bearing portions of the recesses (35, 55).
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