Spade bit having reamer feature
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 8, 2017
Issued Date -
N/A
app pub date -
Feb 3, 2013
filing date -
Oct 10, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spade bit includes a shaft defining an axis about which the spade bit is configured to be rotated. The space bit also includes a blade attached to the shaft and having a first paddle portion and a second paddle portion. In addition, the spade bit includes a tip portion attached to the blade and aligned with the axis. The first paddle portion includes (i) a first leading end portion positioned on a first side of the axis and configured to define a first cutting edge portion, and (ii) a first lateral extension portion configured to define a first sloping surface. The first paddle portion defines a first relief space positioned adjacent to both the first sloping portion and the first leading end portion. The second paddle portion includes (i) a second leading end portion positioned on an opposite second side of the axis and configured to define a second cutting edge portion, and (ii) a second lateral extension portion configured to define a second sloping surface. The second paddle portion defines a second relief space positioned adjacent to both the second sloping portion and the second leading end portion.
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