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US 5,332,240 AGranted
Drill chuck key tool
OwnerPaul Bedoianinventor
Life of this patent
Estimating the term…
Abstract
A drill chuck key tool including at one end a gear and pin element for engaging a drill chuck collar and at the opposite end a socket configured for releasable receipt of a ratchet wrench drive lug for application of the mechanical advantages provided by a socket wrench to such tool.
Claims8
A chuck key for tightening the jaws of a drill chuck of the type including a tightening collar and chuck key pin hole and being adapted for use with a socket wrench handle of the type including a drive lug of a predetermined configuration and comprising:
- an elongated shank having a longitudinal central axis formed on one extremity with a chuck-engaging pin and gear teeth arrayed concentrically around said central axis at the periphery of the intermediate portion of said shank for meshing with the gear teeth of a chuck collar;
- a cup formed on the extremity of said shank opposite said one extremity and including a socket arranged centrally on said central axis for releasable telescopical receipt of said lug;
- and
- said socket being formed with a polygonal transverse cross section for non-rotational engagement with said drive lug whereby said socket may be engaged over said drive lug of said socket wrench and said pin and gear portion engaged with said chuck and said socket wrench utilized as a lever to act through said tool to tighten said chuck.
1 more element
Dependencies are inferred from the claim text.