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US 5,203,654 AGranted
Replaceable tang and tool combination
OwnerJerry N. Hendersoninventor
Life of this patent
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Abstract
A tool including a tapered shank for installation in the chuck of a machine tool. The tapered shank includes a threaded bore in which is received a detachable tang. The tang includes a threaded segment as well as an exposed segment with flats thereon. A shoulder on the tang abuts the end of the tapered shank. A relieved segment in one version of the tang is of lesser cross sectional area than the threaded segment and constitutes a zone where fracture can occur if excessive torque is applied.
Claims2
A tang for a machine powered tool having a tapered shank defining an internally threaded bore, said tang comprising,
- a threaded segment for installation in said bore,
- an end segment having a distal end, a pair of torque receiving flats on said end segments terminating at the distal end of the end segment, a shoulder for abutment with said shank, and,
- an additional segment intermediate said shoulder and aid threaded segment and having a cross sectional area less than the cross sectional area of said threaded segment to provide a fracture zone susceptible to fracture prior to fracture of the tool during tool use.
Dependencies are inferred from the claim text.