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Class Information
Number: 55/309
Name: Gas separation > With separating media bypass or system gas pressure relief (e.g., rupturable or deformable)
Description: Apparatus provided with means (1) to permit total flow of the system fluid directed through the apparatus to avoid the separating means, or at least one stage of serially arranged separating means, (2) to admit ambient air to the apparatus through other than the normal inflow path of fluid to be separated, or (3) to permit discharge or escape of system fluid to the ambient air through other than the normal gas effluent path.

Sub-classes under this class:

Class Number Class Name Patents
55/310 Pressure relief means to or from atmosphere 73
55/312 Valved bypass means 94
55/309.1 With heating or cooling means 10

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8702828 Flat bag for vacuum cleaners Apr. 22, 2014
8702827 Flat bag for vacuum cleaners Apr. 22, 2014
8679241 Gas pressure monitor for pneumatic surgical machine Mar. 25, 2014
8663370 Breather for crankcase ventilation system Mar. 4, 2014
8585800 Apparatus and method for filtering cooling duct of battery for electric vehicle Nov. 19, 2013
8539755 Exhaust purification device of internal combustion engine Sep. 24, 2013
8535401 Cooling air cleaner of an electronic device Sep. 17, 2013
8486170 Filter apparatus Jul. 16, 2013
8454716 Variable flow particle separating structure Jun. 4, 2013
8425645 Air cleaner for motor vehicles operating in extreme weather conditions Apr. 23, 2013
8308857 Filter cassette for allowing a leak therein to be detected and method thereof Nov. 13, 2012
8302674 Air conditioning system for car Nov. 6, 2012
8292978 Radial air intake device with integrated bypass for an air inlet Oct. 23, 2012
8262759 Filter device, particularly for filtering gaseous fluids Sep. 11, 2012
8252081 Water dissipation device and method Aug. 28, 2012
8241382 Air cleaner for motor vehicles operating in extreme weather conditions Aug. 14, 2012
8236081 Permeable membrane water dissipation device Aug. 7, 2012
8133310 Method and apparatus for in-situ testing of filtration systems Mar. 13, 2012
8066787 Bypass flow filter with improved filter efficiency and exhaust system and vehicle having the filter Nov. 29, 2011
7967882 Low-profile surface mount filter Jun. 28, 2011
7914594 Air filtering device and cleaning system of semiconductor manufacturing apparatus with the same Mar. 29, 2011
7806949 Low-profile surface mount filter Oct. 5, 2010
7789925 Purge exhaust processor Sep. 7, 2010
7708793 Purge exhaust processor May. 4, 2010
7699029 Crankcase ventilation system with pumped scavenged oil Apr. 20, 2010
7670411 Air-cleaner Mar. 2, 2010
7625437 Cartridge for cleaning compressed air in compressed air supply systems of motor vehicles Dec. 1, 2009
7608137 Air cleaner and fuel adsorbent member Oct. 27, 2009
7588610 Dust collector and vacuum cleaner having the same Sep. 15, 2009
7575616 Low-profile surface mount filter Aug. 18, 2009
7569087 Filter element provided with channels of variable dimensions and arrangement Aug. 4, 2009
7517377 Dust collecting unit for use in cleaner Apr. 14, 2009
7501002 Cyclone dust separator and a vacuum cleaner having the same Mar. 10, 2009
7449038 Methods and systems for detecting baghouse filter leaks Nov. 11, 2008
7422612 Oil separator for the separation of oil from the crankcase ventilation gas of an internal combustion engine Sep. 9, 2008
7399419 Modular filtration system Jul. 15, 2008
7326269 NBC filtration unit providing unfiltered and filtered air paths Feb. 5, 2008
7217306 Trap apparatus May. 15, 2007
7156892 Filter protection device for preventing damage to an air filter Jan. 2, 2007
7097682 Ventilation filter medium for container, and container and container cap equipped with ventilation filter medium Aug. 29, 2006
7066987 Separating cyclone and method for separating a mixture Jun. 27, 2006
6932907 Fluid treatment elements Aug. 23, 2005
6913637 Air purifier Jul. 5, 2005
6790248 Exhaust gas purification filter Sep. 14, 2004
6767378 Exhaust gas purifying system for internal combustion engine Jul. 27, 2004
6726456 Foreign matter removing structure in a fluid circuit and a compressor therewith Apr. 27, 2004
6507282 Filter monitoring system using a thermistor Jan. 14, 2003
6494935 Vortex generator Dec. 17, 2002
6368371 Trap device and trap system Apr. 9, 2002
6358291 Trailer air dryer with bypass valving and service indicator Mar. 19, 2002

1 2 3

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