Back drilling threaded bit

- Ingersoll-Rand Company
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view showing the design from the bottom, front and one side;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a back view thereof; and,

FIG. 6 is a left side view thereof, the right side being a mirror image of the left side.

Referenced Cited
U.S. Patent Documents
D359968 July 4, 1995 Ekblad et al.
4730682 March 15, 1988 Ditzig
5025875 June 25, 1991 Witt
5145017 September 8, 1992 Holster et al.
5366032 November 22, 1994 Kay
Patent History
Patent number: D382887
Type: Grant
Filed: May 31, 1996
Date of Patent: Aug 26, 1997
Assignee: Ingersoll-Rand Company (Woodcliff Lake, NJ)
Inventors: Charles D. Hollar (Roanoke, VA), Stuart A. Connell (Buchanan, VA)
Primary Examiner: Antoine Duval Davis
Attorney: John J. Selko
Application Number: 0/55,215
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)
International Classification: 1509;