Drill tool or the like
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FIG. 1 is a side elevational view of the drill tool or the like illustrating one embodiment of the new design and showing the cutting portion of the tool in phantom;
FIG. 2 is a top end view of the tool of FIG. 1;
FIG. 3 is a sectional view taken along the lines 3--3 of FIG. 1;
FIG. 4 is a partial elevational view of the right side of the tool of FIG. 1;
FIG. 5 is a side elevational view of the tool illustrating a second embodiment of the new design and showing the cutting portion of the tool of the type shown in FIG. 1 partially in phantom;
FIG. 6 is a top end view of the tool of FIG. 5;
FIG. 7 is a sectional view taken along the line 7--7 of FIG. 5; and
FIG. 8 is a partial elevational view of the left side of the tool of FIG. 5.
The phantom representation of the cutting portion of a drill bit is made in the drawings merely for the purpose of illustrating the environment in which this invention is used. The structure shown in broken lines is not part of the design sought to be patented.
2390950 | December 1945 | Lanfranconi |
2570945 | October 1951 | Hawkins |
2740974 | April 1956 | Lewis |
Type: Grant
Filed: Sep 8, 1975
Date of Patent: Nov 11, 1980
Assignee: Olin Corporation (New Haven, CT)
Inventor: Hajo Zahn (Guilford, CT)
Primary Examiner: Alan P. Douglas
Attorney: Donald R. Motsko
Application Number: 5/611,034
International Classification: D0801;