Pipe bore refinishing tool

Description

FIG. 1 is a reduced top, front and right-side perspective view of a pipe bore refinishing tool showing my new design;

FIG. 2 is a front plan view of the tool;

FIG. 3 is a rear plan view of the tool;

FIG. 4 is a top elevational view of the tool; and,

FIG. 5 is a bottom elevational view of the inventive tool.

Referenced Cited
U.S. Patent Documents
D323100 January 14, 1992 Pastore
D329006 September 1, 1992 Standridge
3597887 August 1971 Winthrop
4715150 December 29, 1987 Takeuchi et al.
Patent History
Patent number: D334877
Type: Grant
Filed: Feb 21, 1991
Date of Patent: Apr 20, 1993
Inventor: Nils Nygards (Minneapolis, MN)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Jeff Musgrove
Application Number: 7/659,184
Classifications
Current U.S. Class: D 8/70