Plural-jawed chuck for twist drill

B - Operations – Transporting – 23 – B

Patent

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29/25

B23B 31/12 (2006.01)

Patent

CA 1078157

ABSTRACT OF THE DISCLOSURE The specification describes a plural-jawed chuck comprising an outer tubular body having a first cylindrical rearward end and a second cylindrical forward end; the diameter of the first cylindrical end being greater than the diameter of the second cylindrical end and a sloping wall section between the first and second cylindrical ends; a plurality of jaw members received in the tubular body, each jaw member including a forward arcuate portion corresponding to the forward cylindrical end of the tubular body, a rearward arcuate portion, and an arcuate sloping portion corresponding to the cylindrical sloping portion of the tubular body.

304119

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