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Class Information
Number: 165/71
Name: Heat exchange > With purge, or drainage, cock or plug
Description: Apparatus having a discharge opening additional to the normal flow inlet and outlet of a heat exchanger and closed by a cock or plug, for removing material from a flow path of the heat exchanger.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8616271 Thermal control device on board a spacecraft Dec. 31, 2013
8141620 Method for conditioning a cooling loop of a heat exchange system Mar. 27, 2012
7520318 Heat exchanger for vehicle Apr. 21, 2009
7454956 Heat exchanger leak detection using mass gas flow metering Nov. 25, 2008
7377307 Vertical heat exchanger May. 27, 2008
7350560 Heat exchangers Apr. 1, 2008
7273087 Assembly Sep. 25, 2007
7051797 Heat exchanger May. 30, 2006
6796369 Method and apparatus to prevent metal dusting Sep. 28, 2004
6739352 Self-piercing radiator drain valve May. 25, 2004
6619380 Heat exchanger drain assembly having a frangible wall Sep. 16, 2003
6616411 Fan blade for agricultural combine cooling system Sep. 9, 2003
6167946 Heat exchanger mounted to vehicle Jan. 2, 2001
6076597 Helical coil heat exchanger with removable end plates Jun. 20, 2000
5992507 Geothermal community loop field Nov. 30, 1999
5762130 Down flow, two pass radiator with air venting means Jun. 9, 1998
5613549 Method and apparatus for selectively sealing and securing a sensor of a sealing plug to a part Mar. 25, 1997
5481883 Method and apparatus for reduction of refrigerant gases escaping from refrigeration systems Jan. 9, 1996
5479961 Method of plugging a heat exchanger tube and plug therefor Jan. 2, 1996
5456290 Tube plug having a flange sealing a chamber for plugging a tubular member Oct. 10, 1995
5426941 Vapor condensation and liquid recovery system Jun. 27, 1995
5323846 Fluid circulator and temperature regulator Jun. 28, 1994
5300708 Process for the catalytic hydrogenation of organic compounds in the gas phase Apr. 5, 1994
5267606 Vehicular flushing and draining apparatus and method Dec. 7, 1993
5255717 System for removing a plug from a heat exchanger tube Oct. 26, 1993
5249604 Tube plug for plugging a tube Oct. 5, 1993
5246202 Draincock assembly Sep. 21, 1993
5238054 Steam generator nozzle dam Aug. 24, 1993
5135705 Plug and method for plugging a penetration in a pressure vessel wall Aug. 4, 1992
5097894 Vehicular flushing and draining apparatus and method Mar. 24, 1992
5033511 Device for the pressure-sealed obturation of a portion of a primary duct of a pressurized-water nuclear reactor Jul. 23, 1991
5022437 Hollow plug for blocking a heat exchanger tube Jun. 11, 1991
5016674 Rod plug caps May. 21, 1991
4986313 Sealing plug for a steam-generator tube Jan. 22, 1991
4982764 High confidence tube plug Jan. 8, 1991
4936376 Synthetic gas cooler with thermal protection Jun. 26, 1990
4928754 Heat exchanging apparatus May. 29, 1990
4874033 Rapid warmer for blood and blood products Oct. 17, 1989
4823846 Tube plug tip restrainer apparatus Apr. 25, 1989
4811759 Device for the fluidtight closure of an aperture extending through a wall Mar. 14, 1989
4798242 Heat exchanger for recovering heat from exhaust gases Jan. 17, 1989
4776389 Method and apparatus for evacuating and filling heat pipes and similar closed vessels Oct. 11, 1988
4771810 Multi-seal mechanical tube plug Sep. 20, 1988
4765399 Method and plant for the condensation of excess steam Aug. 23, 1988
4763724 Plastic radiator for transverse-flow cooling systems of internal combustion engines Aug. 16, 1988
4760868 High confidence tube plug Aug. 2, 1988
4751944 Duplex mechanical tube plug Jun. 21, 1988
4745989 Valve for draining automatic transmission fluid and method of using same May. 24, 1988
4738306 Horizontal type radiator for engines Apr. 19, 1988
4734972 Tube plug removal machine Apr. 5, 1988

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