[12] Patent
[11] Patent No.:GC0009251  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/140706
Date of the Decision to Grant the Patent:02/Dec/2018

[21] Application No.:GCC/P/2008/12105

[22] Filing Date:5/11/2008

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
7/11/2007
11/936,182

[72] Inventors:1- Kenneth L. Yeazel،2- Gregory L. Puckett،3- Richard L. Goswick

[73] Owner: TDW Delaware, Inc., 1100 Market Street, Suit 780, Wilmington, Delaware 19801, USA

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: F16L55/10 (2006.01)

[56] Cited Documents:

-US 7,270,139 B2 (CALKINS et al.) 18 September 2007
-US 6,062,262 A (TASH) 16 May 2000
-US 5,156,042 A (CARLIN et al.) 20 October 1992
 
Examiner: Eng. Saleh M. AlAqil

[54] DOUBLE BLOCK AND BLEED PLUG
[57] Abstract: A pipe plug comprised of two, pivotally connected plugging heads, each plugging head having a sealing element, which work in combination to double block and bleed a pipe. The first sealing element prevents flow of product in the pipe and the second sealing element captures any leakage past the first sealing element and forces that leakage out through a fitting. A stabilization pad, connected to a flange on a nosepiece of each plugging head, prevents deformation of the sealing elements. A spring-loaded pivot arm connected to the second plugging head allows the yoke that connects the two plugging heads to rotate freely. An outward-facing raised taper projection on the pivot arm, along with a guide wheel connected to the first plugging head, prevent the yokes and plugging heads from becoming entrapped during their installation in or removal from the pipe.
No. of claims: 20     No. of figures: 8


 

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