Combined drill and counterbore bits

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Description

FIG. 1 is a front elevational view of the combined drill and counterbore bits of the present invention;

FIG. 2 is a back elevational view of the combined drill and counterbore bits of FIG. 1;

FIG. 3 is a right side elevational view of the combined drill and counterbore bits of FIG. 1;

FIG. 4 is a left side elevational view of the combined drill and counterbore bits of FIG. 1;

FIG. 5 is a top plan view of the combined drill and counterbore bits of FIG. 1;

FIG. 6 is a bottom plan view of the combined drill and counterbore bits of FIG. 1; and,

FIG. 7 is a cross sectional view along line 7--7 of FIG. 5 of the combined drill and counterbore bits of FIG. 1.

Referenced Cited
U.S. Patent Documents
D408424 April 20, 1999 Schmotzer
808245 December 1905 Lund
5149231 September 22, 1992 Bowling
Patent History
Patent number: D419576
Type: Grant
Filed: Jan 14, 1999
Date of Patent: Jan 25, 2000
Inventors: Lorraine J Burcher (Lutz, FL), Richard P Burcher (Lutz, FL)
Primary Examiner: Antoine Duval Davis
Application Number: 0/99,155
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)
International Classification: 1509;