Pipe extension

- Rockler Companies, Inc.
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Description

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side elevational view of the present invention, as taken from the left side in FIG. 1;

FIG. 3 is a side elevational view, as taken from the unseen side in FIG. 1;

FIG. 4 is an end elevational view, as taken from the right in FIG. 1;

FIG. 5 is an end elevational view, as taken from the unseen end in FIG. 1;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view.

Claims

The ornamental design for a pipe extension, as shown and described.

Referenced Cited
U.S. Patent Documents
109695 November 1870 Westinghouse, Jr.
1180758 April 1916 Brekke et al.
D49474 August 1916 Fargo
D57343 March 1921 Humphrey
2497633 February 1950 Shapiro et al.
3181396 May 1965 Nance
D254863 April 29, 1980 Hayes
D282962 March 11, 1986 Gerber
4611485 September 16, 1986 Leslie
4724608 February 16, 1988 Parrott
D318102 July 9, 1991 Papai
5316041 May 31, 1994 Ramacier et al.
5669404 September 23, 1997 Guillermo
5702215 December 30, 1997 Li
6003557 December 21, 1999 Brelig et al.
6282999 September 4, 2001 Hite et al.
6904835 June 14, 2005 Dugan et al.
Other references
  • Pasco Tools & Electrical, p. C-3 (“The Drain Key”); 1 page (publically available at least prior to Oct. 8, 2007).
  • Pasco Tools & Electrical, p. C-33(“Internal Nipple Wrench”); 1 page (publically available at least prior to Oct. 8, 2007).
Patent History
Patent number: D597637
Type: Grant
Filed: Nov 25, 2008
Date of Patent: Aug 4, 2009
Assignee: Rockler Companies, Inc. (Medina, MN)
Inventors: Steven Krohmer (Coon Rapids, MN), Daniel P. Banasik (Eagan, MN)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Eric L Goodman
Attorney: Westman, Champlin & Kelly, P.A.
Application Number: 29/328,469
Classifications
Current U.S. Class: Pipe, Tubing Or Hose (D23/266)