Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Axially fixed to tool
Patent
1995-06-07
1997-02-11
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Axially fixed to tool
81429, 408241S, B25B 2100
Patent
active
056013876
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 for non-rotational axial movement relative to the housing. The adjustment collar has a rearward cylindrical portion that includes an inner circumferential surface having a circumferential groove and a plurality of axially extending recesses. The depth adjusting system further comprises a pair of arcuate spring members attached to the nose portion of the housing and formed to include an arcuate rib portion for engaging the circumferential groove. The arcuate spring members also include a plurality of cantilevered spring fingers for biasing the arcuate rib portions into engagement with the circumferential groove. Further, the arcuate spring members are each formed to include detent projections adapted to engage one of the plurality of axially extending recesses for positively locating the subassembly with respect to the nose portion of the housing. The adjustment collar and depth locator subassembly may be removed from the housing as a unit without disturbing the depth setting through the application of axial force which causes the pair of arcuate spring members to flex inwardly against the bias of their cantilevered spring fingers.
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Sanford Christopher P.
Subramanian Ashok S.
Black & Decker Inc.
Howell Daniel W.
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