Tool for use in plugging a cylindrical pipe

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Description

FIG. 1 is a right perspective view of a tool for use in plugging a cylindrical pipe showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a left side view showing the tool in retracted condition thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a rear view thereof.

Referenced Cited
U.S. Patent Documents
D177664 May 1956 Caldwell et al.
D260355 August 25, 1981 Buzzell
D290581 June 30, 1987 Hughes
2570706 October 1951 Peluse
2875658 March 1959 Benjamin
3318176 May 1967 Geier
4376397 March 15, 1983 Newby et al.
Patent History
Patent number: D319759
Type: Grant
Filed: Apr 25, 1988
Date of Patent: Sep 10, 1991
Inventor: Timothy H. Bookout (Chattanooga, TN)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: M. Hannon
Attorney: James B. Middleton
Application Number: 7/185,809
Classifications
Current U.S. Class: D 8/21