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Exhaust filter for internal combustion engines

  • US 3,224,171 A
  • Filed: 08/16/1963
  • Issued: 12/21/1965
  • Est. Priority Date: 08/16/1963
  • Status: Expired due to Term
First Claim
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1. A FILTER DEVICE FOR REMOVING UNDERSIRABLE FUMES AND PARTICLES FROM THE EXHAUST AND OTHER GASES FROM AN INTERNAL COMBUSTION ENGINE COMPRISING A GENERALLY CYLINDRICAL HOUSING HAVING FRON AND REAR END WALL PORTIONS WITH OPENINGS IN THE FRON WALL PORTION FOR THE ADMISSION OF GASES FROM THE EXHAUST AND CRANK CASE OF AN INTERNAL COMBUSTION ENGINE, A SERIES OF BAFFLES MOUNTED IN SPACED RELATION TRANSVERSELY OF SAID GENERALLY CYLINDRICAL HOUSING AND HAVING OPENINGS OFFSET FOR INDIRECT FLOW OF GASES THERETHROUGH, AN ADDITIONAL BAFFLE MOUNTED TRANSVERSELY OF SAID GENERALLY CYLINDRICAL HOUSING AND HAVING CIRCUMFERENTIALLY SPACED OPENIGS NEAR ITS OUTER EDGE THROUGH WHICH GASES CAN PASS INTO THE AREA ADJACENT THE GENERALLY CYLINDRICAL WALL OF SAID HOUSING, A HOLLOW GENERALLY CYLINDRICAL FILTER MEDIA REMOVABLY MOUNTED CONCENTRICALLY IN SAID GENERALLY CYLINDRICAL HOUSING IN A MANNER TO PROVIDE A CHAMBER WITHIN SAID HOUSING AROUNG THE EXTERIOR OF SAID FILTER MEDIA, WHEREBY GASES CAN FLOW FROM THE CHAMBER AROUND THE FILTER MEDIA TO THE INTERIOR AND THROUGH THE REAR THEREOF, A MEMBER CLOSING THE SPACE AROUND THE EXTEROR OF THE REAR END OF SAID FILTER MEDIA AND INCLUDING PRESSURE SEATED VALVES WHICH CAN OPEN WHEN SUBJECTED TO PRESSUE IN SAID CHAMBER IN EXCESS OF A PREDETERMINED VALUE, AND MEANS FOR INDICATING WHEN SAID VALVES ARE IN OPEN POSITION.

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