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United States Patent D633,991
Nakagawa March 8, 2011

Gate valve seal

Claims


CLAIM The ornamental design for a gate valve seal, as shown and described.
Inventors: Nakagawa; Ippei (Machida, JP)
Assignee: Nippon Valqua Industries, Ltd. (Tokyo, JP)
Appl. No.: D/337,562
Filed: May 26, 2009

Current U.S. Class: D23/269
Current International Class: 2301
Field of Search: D23/262,269 277/351-359,572,563,504

References Cited

U.S. Patent Documents
3875634 April 1975 Minegishi
4421330 December 1983 Burke
4570944 February 1986 Traub
5979904 November 1999 Balsells
6402944 June 2002 Vaughan
6886833 May 2005 von Engelbrechten et al.
7299941 November 2007 McMahon, III et al.
D556866 December 2007 Darce
D557387 December 2007 Darce
D561877 February 2008 Hopkins et al.
7341257 March 2008 Toth et al.
D605739 December 2009 Henry et al.
D607091 December 2009 Weston
D614272 April 2010 Henry et al.
2002/0140176 October 2002 Tong
2005/0098957 May 2005 Goss et al.
2008/0296846 December 2008 Daggett et al.
Foreign Patent Documents
11020128 Jan., 1999 JP
11201288 Jul., 1999 JP
1272633 Jun., 2006 JP
1361605 May., 2009 JP
1361604 Feb., 2010 JP
319758 Mar., 1993 TW
123319 May., 1996 TW
253730 Dec., 2004 TW
265252 Nov., 2006 TW
Primary Examiner: Nelson; T. Chase
Assistant Examiner: Goodman; Eric L
Attorney, Agent or Firm: The Webb Law Firm

Description



FIG. 1 is a perspective view of a gate valve seal, in accordance with a first embodiment of the present invention;

FIG. 2 is a top plan view of the gate valve seal shown in FIG. 1, wherein the bottom plan view is identical to the top plan view;

FIG. 3 is a front plan view of the gate valve seal shown in FIG. 1, wherein the rear and side plan views are identical to the front plan view;

FIG. 4 is a cross-sectional view of the gate valve seal shown in FIG. 1, taken along the line 4--4 in FIG. 2;

FIG. 5 is a close-up view of detail 5 shown in FIG. 4;

FIG. 6 is a perspective view of a gate valve seal, in accordance with a second embodiment of the present invention;

FIG. 7 is a top plan view of the gate valve seal shown in FIG. 6, wherein the bottom plan view is identical to the top plan view;

FIG. 8 is a front plan view of the gate valve seal shown in FIG. 6, wherein the rear and side plan views are identical to the front plan view;

FIG. 9 is a cross-sectional view of the gate valve seal of FIG. 6, taken along the line 9--9 in FIG. 7; and,

FIG. 10 is a close-up view of detail 10 shown in FIG. 9.

Each embodiment of the present design has a uniform cross-section when taken at any point around the circumference of the seal.

The cross hatching shown in the cross-sectional views is included to designate the material of the seal in accordance with United States patent drawing conventions, and forms no part of the claimed design.

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