Square drill bit
Description
FIG. 1 is a perspective view of a square drill bit according to the present invention;
FIG. 2 is a top plan view of the square drill bit of FIG. 1;
FIG. 3 is a front view of the square drill bit of FIG. 1;
FIG. 4 is a back view of the square drill bit of FIG. 1;
FIG. 5 is a left side view of the square drill bit of FIG. 1;
FIG. 6 is a right side view of the square drill bit of FIG. 1; and,
FIG. 7 is a perspective view of the driver drill bit of FIG. 1 in co-operation with a crown bit, wherein the broken lines illustrate components that form no part of the design.
The broken lines in the figures are for illustrative purposes only and form no part of the claimed design.
Claims
The ornamental design for a square drill bit, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
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- Concentrix Overburden Drilling System.
- Outils de forage Sandvik Coromant TUBEX.
- Centrex.
- Stratex Drill Systems.
- Symmetrix For drilling of tube umbrella.
Patent History
Patent number: D496948
Type: Grant
Filed: Jun 12, 2003
Date of Patent: Oct 5, 2004
Inventors: Luc Charland (Sherbrooke, Quebec), Roger Charland (Sherbrooke, Quebec)
Primary Examiner: Antoine D. Davis
Application Number: 29/183,431
Type: Grant
Filed: Jun 12, 2003
Date of Patent: Oct 5, 2004
Inventors: Luc Charland (Sherbrooke, Quebec), Roger Charland (Sherbrooke, Quebec)
Primary Examiner: Antoine D. Davis
Application Number: 29/183,431
Classifications
Current U.S. Class:
Cutting Tool, E.g., Drill Bit, Etc. (D15/139)
International Classification: 1509;
International Classification: 1509;