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Class Information
Number: 138/89
Name: Pipes and tubular conduits > With closures and plugs
Description: Subject matter relating to pipes or pipe fittings having closures or plugs, or closures and plugs limited by structure to use with pipes.










Sub-classes under this class:

Class Number Class Name Patents
138/91 Double end 35
138/93 Inflatable 271
138/ Inflation stem type 0
138/92 Lateral opening 139
138/94 Laterally insertable 206
138/95 Return bend type 6
138/90 Test plugs 290


Patents under this class:

Patent Number Title Of Patent Date Issued
8683831 Locking cover plate arrangement Apr. 1, 2014
RE44796 Bladder system for reinforcing a portion of a longitudinal structure Mar. 11, 2014
8666017 Apparatus for repairing riser pipe elbow weld in boiling water nuclear reactor Mar. 4, 2014
8662100 Tube clamping and closing device Mar. 4, 2014
8651144 Two-section valve cap Feb. 18, 2014
8651143 Device for shutting a jettisoning circuit of an aircraft Feb. 18, 2014
8647731 Purge dam for retaining purge gas around a weld zone Feb. 11, 2014
8646488 Protective cap for pipe and tube ends Feb. 11, 2014
8636035 Dual inflatable plug assembly Jan. 28, 2014
8622091 Protector for tubular threaded joint Jan. 7, 2014
8617482 Maintaining sterile conditions in a fluid transportation system Dec. 31, 2013
8617465 Dialysis connector and cap compatible with gas sterilization Dec. 31, 2013
8616432 Welding purge dam for high air flow environment Dec. 31, 2013
8616210 Ports cap for mask assembly Dec. 31, 2013
8602064 Fluid passage closure system in compressor Dec. 10, 2013
8573655 Pipe sealing tool with external clamp Nov. 5, 2013
8567449 Systems and methods for locating and restoring service lines in pipeline rehabilitation Oct. 29, 2013
8561646 System and methods for multiple service line plug deployment Oct. 22, 2013
8551338 Wafer-shaped hollow fiber module for in-line use in a piping system Oct. 8, 2013
8528777 Tube for DNA reactions Sep. 10, 2013
8522826 Isolation device for oil circuit Sep. 3, 2013
8517146 Hose cap coupler and clip Aug. 27, 2013
8511249 Pointer arrangement for marking tubes in a shell and tube heat exchanger Aug. 20, 2013
8505585 Rupture sealing device Aug. 13, 2013
8468877 End cap for a hydraulic fitting Jun. 25, 2013
8453666 Seal for pressure testing a plumbing installation and method of use thereof Jun. 4, 2013
8443843 Air-oil separator May. 21, 2013
8439082 Retention mechanism for subterranean seals experiencing differential pressure May. 14, 2013
8425147 Drainage system having an end cap for diverting fluid Apr. 23, 2013
8424570 Pipe thread protector Apr. 23, 2013
8413689 Storm drainage conduit plug with a sealing band Apr. 9, 2013
8413687 Insulated sewer vent cover Apr. 9, 2013
8397764 Safety cap for couplings and fittings Mar. 19, 2013
8381934 Sealing plug for blind installation Feb. 26, 2013
8376208 Purge plug for welding applications Feb. 19, 2013
8371337 Quick release tire stem cap Feb. 12, 2013
8353395 Helical auger plug systems Jan. 15, 2013
8353315 End cap Jan. 15, 2013
8342210 Security cap with latch Jan. 1, 2013
8342209 Plug for fluid-transfer coupling device Jan. 1, 2013
8336416 Ball screw device having cooling structure Dec. 25, 2012
8333219 Plug for setting in a pipe Dec. 18, 2012
8318022 Wafer-shaped hollow fiber module for in-line use in a piping system Nov. 27, 2012
8317763 Safety cap for an ostomy bag Nov. 27, 2012
8313123 Device for capping and sealing refrigeration service valve fittings of quick disconnect type Nov. 20, 2012
8312898 Plug with engagement members Nov. 20, 2012
8312621 Stabilizer device for through-hole electrical jacks Nov. 20, 2012
8292034 Air-oil separator Oct. 23, 2012
8281818 Systems and methods for gauging and controlling fluids and gases from pipes and orifices Oct. 9, 2012
8272405 Fitting to plug an exposed deep sea pipe Sep. 25, 2012











 
 
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