Spot weld drill

- Shinano, Inc.
Description

FIG. 1 is a perspective view of the spot weld drill showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The side of the spot weld drill, not shown, is the same as the side shown in FIG. 3.

The broken lines showing the tool bit is for illustrative purposes only and forms no part of the claimed invention.

Referenced Cited
U.S. Patent Documents
2642760 June 1953 Goldberg
3250153 May 1966 Purkey
4418767 December 6, 1983 Vindez
4540319 September 10, 1985 Michiharu
4810137 March 7, 1989 Yang
Foreign Patent Documents
568228 March 1945 GBX
Patent History
Patent number: D344439
Type: Grant
Filed: Feb 10, 1993
Date of Patent: Feb 22, 1994
Assignee: Shinano, Inc.
Inventor: Nobuyuki Izumisawa (Tokyo)
Primary Examiner: Alan P. Douglas
Assistant Examiner: J. H. Musgrove
Law Firm: Welsh & Katz, Ltd.
Application Number: 0/4,664
Classifications
Current U.S. Class: D 8/71; D 8/72