B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/31
B23B 51/00 (2006.01) B23B 51/04 (2006.01)
Patent
CA 1075503
#223 ARBOR FOR ANNULAR HOLE CUTTER Abstract of the Disclosure An arbor for an annular hole cutter which includes a center pilot pin spring biased axially outwardly beyond the leading end of the cutter and which is retained in the cutter frictionally so as to be readily manually removable therefrom after the cutter has initiated a cut in the material in which the hole is being formed.
303285
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