Plug for use at an end of a tube

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Description

FIG. 1 is a perspective view of the plug for use at an end of a tube;

FIG. 2 is a front view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is an enlarged cross-sectional view along line 6-6 of FIG. 2;

FIG. 7 is an enlarged cross-sectional view along line 7-7 of FIG. 2;

FIG. 8 is an enlarged cross-sectional view along line 8-8 of FIG. 3;

FIG. 9 is a reference view of the plug for use at an end of a tube together with a heat exchanger pipe for a steam generator; and,

FIG. 10 is a reference view of plugs located in ends of tubes of heat exchanger pipes for a steam generator, a tube support plate, and a tube plate.

The broken lines in the drawings are included to show use and environment and form no part of the claimed design.

Claims

The ornamental design for a plug for use at an end of a tube, as shown and described.

Referenced Cited
U.S. Patent Documents
3356418 December 1967 Healey et al.
4069535 January 24, 1978 Cato
4244073 January 13, 1981 Sagawa
4389461 June 21, 1983 Scott
D360007 July 4, 1995 Farr
5702160 December 30, 1997 Levankovskii et al.
6102486 August 15, 2000 Briese
D432230 October 17, 2000 Utas
D581952 December 2, 2008 Hall et al.
D597637 August 4, 2009 Krohmer et al.
D601592 October 6, 2009 Watson et al.
D604809 November 24, 2009 Mannella
D615182 May 4, 2010 Abe et al.
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20040065484 April 8, 2004 McAlvain
Foreign Patent Documents
D1366591 August 2009 JP
D1379826 February 2010 JP
Patent History
Patent number: D689184
Type: Grant
Filed: Mar 15, 2012
Date of Patent: Sep 3, 2013
Assignee: Nippon Steel & Sumitomo Metal Corporation (Tokyo)
Inventors: Yuji Abe (Osaka), Tomio Yoshino (Osaka)
Primary Examiner: David Muller
Application Number: 29/415,863
Classifications