| 摘要 |
<p>A laminated ratchet tool (20) includes a laminated ratchet head (23) defining an internal gear and a pawl mechanism (50) carried by the ratchet head (23) and including two laminated pawls (51 and 51A) arranged for ratcheting engagement with the gear teeth (35). Each of the laminated parts includes a plurality of plates arranged in a congruent stack and fixedly secured together, as by brazing. Each plate is formed by stamping and has plural orienting structures stamped therein, each such structure being a displaced portion which forms a recess (67A-C) at one side of the plate, so that the projections (68A-C) on one plate mate in the recesses (67A-C) of an adjacent plate to facilitate alignment of the plates. The ratchet head (23) includes toothed inner plates (60) which define the internal gear and untoothed outer plates (70) which define bearing surfaces for the pawl mechanism (50).</p> |
