Importance

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Abstract

A depth adjusting system particularly for power-driven screwdrivers comprising an adjustment collar that is releasably fitted to the housing of the tool and a depth locator which screws onto the collar. The adjustment collar has a forward cylindrical portion and an enlarged rearward cylindrical portion that includes a pair of diametrically opposed, axially extending cantilevered spring fingers for detachably connecting the adjustment collar to a circular opening in the housing. The free ends of the spring fingers are provided with a hook and groove that are adapted to engage and mate with a corresponding circumferential groove and rib in the housing opening, thereby permitting relative rotation of the adjustment collar to the housing which serves to set the relative axial position of the depth locator. The adjustment collar and depth locator subassembly may be removed from the housing without disturbing the depth setting by depressing the spring fingers sufficiently to release the hooks from the groove in the housing. The rearward facing ends of the hooks are preferably provided with chamfered cam surfaces so that the depth adjustment subassembly can be readily reinstalled onto the tool by inserting the rearward end of the adjustment collar into the opening in the tool housing until the hooks on the spring fingers snap into the groove in the housing.

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First Claim