QUICK CHANGE WOODWORKING SPADE BIT
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United States of America Patent
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app pub date -
Feb 10, 2016
filing date -
Feb 10, 2016
priority date (Note) -
Abandoned
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Abstract
A quick change woodworking spade bit includes a bit having a cutting portion and an insertion portion with a positioning hole. A shank is coupled with a rear end of a connecting seat. The insertion portion of the bit is detachably engaged in an insertion hole in a front end of the connecting seat. First and second recessed portions are defined in a peripheral wall of the connecting seat. The second recessed portion includes first and through-holes intercommunicated with the first recessed portion and the insertion hole, respectively. An actuating rod is mounted in the second recessed portion and includes an engagement column extending through the first through-hole and a positioning column extending through the second through-hole. A button is mounted in the first recessed portion and is operably connected to the engagement column. The positioning column is biased by an elastic element to engage with the positioning hole.
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