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Class Information
Number: 138/90
Name: Pipes and tubular conduits > With closures and plugs > Test plugs
Description: Plugs for pipes having provisions whereby a fluid may be introduced into the pipe through the plug or for the attachment of a gauge for the purpose of testing the pipe for leaks.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7389798 |
Plug for a port |
Jun. 24, 2008 |
| 7347218 |
Roof cap removal tool |
Mar. 25, 2008 |
| 7343936 |
Water pipe coupling with off-centered piercing assembly for tear out disk and method of removing disk |
Mar. 18, 2008 |
| 7334608 |
Removable sanitary sewer friction-fit plug for unwanted fluid exclusion |
Feb. 26, 2008 |
| 7334607 |
Protective cap for a sealing stopper in a collecting vessel of a condenser |
Feb. 26, 2008 |
| 7325573 |
Plumbing line test plug and method of use of the same |
Feb. 5, 2008 |
| 7325442 |
Leak testing device with a permanent coupling |
Feb. 5, 2008 |
| 7314065 |
Irreversible plug assembly |
Jan. 1, 2008 |
| 7311120 |
Expandable pipe stopper |
Dec. 25, 2007 |
| 7264020 |
Accessible test fitting for a plumbing system |
Sep. 4, 2007 |
| 7240697 |
Apparatus and method for isolating and testing a segment of pipelines |
Jul. 10, 2007 |
| 7225836 |
Pipe plug |
Jun. 5, 2007 |
| 7210503 |
Method and device for increasing safety during pipelaying |
May. 1, 2007 |
| 7171987 |
Pipe fitting plug |
Feb. 6, 2007 |
| 7163028 |
Multipurpose plumbing tool |
Jan. 16, 2007 |
| 7124779 |
Device for fastening a manoeuvrable plug for plugging of pipes |
Oct. 24, 2006 |
| 7111645 |
Method and apparatus for sealing high pressure tubes |
Sep. 26, 2006 |
| 7089964 |
Water pipe coupling with off-centered piercing assembly for tear out disk and method of removing disk |
Aug. 15, 2006 |
| 7021337 |
Plumbing test plug and method |
Apr. 4, 2006 |
| 7013926 |
Plumbing leak testing apparatus |
Mar. 21, 2006 |
| 6997041 |
Dual slide gate valve and method for using same |
Feb. 14, 2006 |
| 6976499 |
Tear-out coupling with cantilevered pull tab |
Dec. 20, 2005 |
| 6976509 |
Method and apparatus for pressurizing plastic pipe |
Dec. 20, 2005 |
| 6966342 |
Closed end sealing plug |
Nov. 22, 2005 |
| 6966343 |
Pipe plug |
Nov. 22, 2005 |
| 6915819 |
Tear out coupling |
Jul. 12, 2005 |
| 6901966 |
Seal device for tubular member |
Jun. 7, 2005 |
| 6901611 |
Bathtub wastewater head fitting |
Jun. 7, 2005 |
| 6886388 |
Contiguous double containment underground storage tank fueling system and methods for detecting leaks therein |
May. 3, 2005 |
| 6883546 |
Lockable compression plug assembly for hermetically sealing an opening in a part, such as the end of a tubular member |
Apr. 26, 2005 |
| 6877529 |
Sealing cap in particular for a collector tube in an air-conditioning unit for vehicles |
Apr. 12, 2005 |
| 6851452 |
Guide plate |
Feb. 8, 2005 |
| 6843108 |
Hydrostatic test plug for water service line |
Jan. 18, 2005 |
| 6840090 |
Plumbing testing devices |
Jan. 11, 2005 |
| 6820636 |
Plumbing tool |
Nov. 23, 2004 |
| 6769291 |
Knock-out pressure test cap with breakaway nipple plug |
Aug. 3, 2004 |
| 6755215 |
Tear-out coupling with puncture means |
Jun. 29, 2004 |
| 6752174 |
Safety plug |
Jun. 22, 2004 |
| 6752175 |
Auxiliary device for repairing a pipeline |
Jun. 22, 2004 |
| 6732762 |
Pressure-containing plug for a tubular passageway |
May. 11, 2004 |
| 6705349 |
Weep plug |
Mar. 16, 2004 |
| 6702299 |
Closure structure with a plug |
Mar. 9, 2004 |
| 6688336 |
Sealing terminal for tubular duct |
Feb. 10, 2004 |
| 6684908 |
Self-locking, high pressure service stopper |
Feb. 3, 2004 |
| 6675634 |
Branch pipe/tank nozzle test plug and method of use |
Jan. 13, 2004 |
| 6672139 |
Leak testing device and a coupling therefor |
Jan. 6, 2004 |
| 6637464 |
Hydrostatic test cap |
Oct. 28, 2003 |
| 6622317 |
Plumbing fitting cover cap retention system |
Sep. 23, 2003 |
| 6622748 |
Tear-out coupling with cantilevered pull tab |
Sep. 23, 2003 |
| 6607087 |
Stopper for forming a gas-tight seal for a variety of bottles |
Aug. 19, 2003 |
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