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Class Information
Number: 55/417
Name: Gas separation > With separated gas outflow control (e.g., apertured conduit) > Valve
Description: Apparatus having a valve to vary gas flow to control the quantity of separated gas flowing through or out of the apparatus.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
4236901 Air cleaner with secondary air filter element Dec. 2, 1980
4213770 Engine emission pollutant separator Jul. 22, 1980
4205970 Central gas supply system and filter adapter therefor Jun. 3, 1980
4205972 Gas valve with integral drip leg and filter Jun. 3, 1980
4202676 Safety enclosure May. 13, 1980
4192751 Bi-directional filter drier Mar. 11, 1980
4179769 Vacuum cleaner attachment for vacuuming liquids Dec. 25, 1979
4175934 Clear air device Nov. 27, 1979
4171208 Vacuum cleaner including diverter valve Oct. 16, 1979
4108238 Energy saving device for habitable building enclosures having a heat changing system Aug. 22, 1978
4102656 Odor conditioner Jul. 25, 1978
4087263 Separator system for steam supplied apparatus May. 2, 1978
4086394 Combination of a battery and vent structure Apr. 25, 1978
4083184 System to supply air into the exhaust conduit of an internal combustion engine Apr. 11, 1978
4077784 Electric filter Mar. 7, 1978
4063326 Vacuum cleaner suction control Dec. 20, 1977
4052178 Compressed air filter assembly Oct. 4, 1977
4042357 Air filter unit for sliding sash windows Aug. 16, 1977
4029487 Apparatus for protecting vacuum sources including valve which alternately communicates with vacuum and atmosphere Jun. 14, 1977
3998614 Internal combustion engine air induction assembly Dec. 21, 1976
3986850 Flow control apparatus and air filters Oct. 19, 1976
3976453 Liquid vortex vacuum pump Aug. 24, 1976
3966439 Fluid sampling device Jun. 29, 1976

1 2 3 4

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