Wrinkle tube for piping work

- DOOBON FLEXIBLE CO., LTD

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Description

FIG. 1 is a front perspective view of the wrinkle tube for piping work showing new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a cross-sectional view taken along the line 4-4 of FIG. 2;

FIG. 5 is a cross-sectional view thereof shown in a position of use with tightening nut and packing for sealing; and,

FIG. 6 is an enlarged view of the portion within the circle line of FIG. 4.

The broken lines shown in the drawings are for the purpose of illustrating environment only that form no part of the claim. The dot dash broken line indicates cutoff boundaries for enlarged detailed portion views and form no part of the claim.

Claims

The ornamental design for a wrinkle tube for piping work, as shown and described.

Referenced Cited
U.S. Patent Documents
2143960 January 1939 Stalter
2901024 August 1959 Marsden, Jr.
4101150 July 18, 1978 Thawley
4967799 November 6, 1990 Bradshaw
7546852 June 16, 2009 Fails
D767737 September 27, 2016 Kuykendall
20040060609 April 1, 2004 Fatato
20060213567 September 28, 2006 Parpart
20100089480 April 15, 2010 Sahu
20110017304 January 27, 2011 Babl
20120255329 October 11, 2012 Wanweerakul
20140027001 January 30, 2014 Matzen
20160201832 July 14, 2016 Barbely
Other references
  • Wavin Corrugated Pipe, Site Copyright 1999-2018, [Site Visited Aug. 31, 2018] Internet URL>https://inrusstrade.ru/en/categories/wavin/series/123/groups/618.
Patent History
Patent number: D839402
Type: Grant
Filed: Sep 5, 2017
Date of Patent: Jan 29, 2019
Assignee: DOOBON FLEXIBLE CO., LTD (Gimpo-si, Gyeonggi-Do)
Inventor: Hwa-ok Shin (Goyang-si)
Primary Examiner: Eric L Goodman
Assistant Examiner: Amy C Wierenga
Application Number: 29/616,263
Classifications
Current U.S. Class: Pipe, Tubing Or Hose (D23/266)