Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier
Reexamination Certificate
2007-01-30
2007-01-30
Caldarola, Glenn (Department: 1764)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Waste gas purifier
C422S180000, C029S890000
Reexamination Certificate
active
10389868
ABSTRACT:
A catalytic converter for an internal combustion engine exhaust system comprises a single-piece, seamless metal housing having tubulated gas inlet and outlet ports and a tubulated intermediate section with a catalytic element therein. The intermediate section is connected to the inlet port by an inlet transition section and to the outlet port by an outlet transition section. The inlet and outlet ports and the inlet and outlet transition sections are formed by swaging the ends of a seamless tube used to form the housing. Exhaust gas produced by operation of the engine passes into the converter and through the catalytic element. Noxious substances in the exhaust, including CO, NOx, and incompletely combusted hydrocarbons are converted to more benign substances through the action of the catalytic element, which is preferably a frangible ceramic honeycomb structure having a plurality of internal passages coated with a catalytically active substance. A swaging process is used to form tubulated ends on the converter. The tabulated ends minimize production of turbulence in the gas flow and allow the converter to be connected to the rest of the exhaust system by clamped, welded, or flanged joints. The one-piece, seamless construction of the converter is economical to produce and eliminates welding of housing components that tend to fail when subjected to corrosive exhaust gasses over a prolonged period of time.
REFERENCES:
patent: 3523590 (1970-08-01), Straw
patent: 3841435 (1974-10-01), Hetherington
patent: 4118199 (1978-10-01), Völker et al.
patent: 4206179 (1980-06-01), Oya et al.
patent: 4207661 (1980-06-01), Mase et al.
patent: 4425304 (1984-01-01), Kawata et al.
patent: 4625511 (1986-12-01), Scheitlin et al.
patent: 4782661 (1988-11-01), Motley et al.
patent: 4865818 (1989-09-01), Merry et al.
patent: 4969264 (1990-11-01), Dryer et al.
patent: 5055274 (1991-10-01), Abbott
patent: 5065576 (1991-11-01), Kanazawa et al.
patent: 5106588 (1992-04-01), Sims et al.
patent: 5118476 (1992-06-01), Dryer et al.
patent: 5119551 (1992-06-01), Abbott
patent: 5216809 (1993-06-01), Abbott et al.
patent: 5329698 (1994-07-01), Abbott
patent: 5403559 (1995-04-01), Swars
patent: 5523059 (1996-06-01), Langer
patent: 5525307 (1996-06-01), Yasaki et al.
patent: 5724735 (1998-03-01), Ickes et al.
patent: 5829132 (1998-11-01), Sickels et al.
patent: 5853675 (1998-12-01), Howorth
patent: 5857329 (1999-01-01), Bigham
patent: 5866079 (1999-02-01), Machida et al.
patent: 5879640 (1999-03-01), Atmur et al.
patent: 5882608 (1999-03-01), Sanocki et al.
patent: 5953817 (1999-09-01), Watanabe et al.
patent: 5958347 (1999-09-01), Roychoudhury et al.
patent: 5980837 (1999-11-01), Umin et al.
patent: 6000131 (1999-12-01), Schmitt
patent: 6051193 (2000-04-01), Langer et al.
patent: 6057263 (2000-05-01), Takahashi et al.
patent: 6086829 (2000-07-01), Shea et al.
patent: 6101714 (2000-08-01), Schmitt
patent: 6185819 (2001-02-01), Bauer et al.
patent: 6224835 (2001-05-01), Langer
patent: 6247552 (2001-06-01), Kovar et al.
patent: 6293010 (2001-09-01), Umin et al.
patent: 6299843 (2001-10-01), Locker et al.
patent: 6324758 (2001-12-01), Huang et al.
patent: 6381843 (2002-05-01), Irie et al.
patent: 6491878 (2002-12-01), Locker et al.
patent: 6497847 (2002-12-01), Foster et al.
patent: 6568078 (2003-05-01), Eisenstock
patent: 6701617 (2004-03-01), Li et al.
patent: 2001/0026780 (2001-10-01), Reuther et al.
patent: 2001/0037573 (2001-11-01), Kuschel et al.
patent: 2001/0043891 (2001-11-01), Adiletta
patent: 2002/0011002 (2002-01-01), Bonny et al.
patent: 2002/0014007 (2002-02-01), Bonny et al.
patent: 2002/0054844 (2002-05-01), Pfeifer et al.
patent: 2002/0068025 (2002-06-01), Foster et al.
patent: 2002/0096225 (2002-07-01), Ishizu et al.
patent: 2002/0106312 (2002-08-01), Harris
patent: 2002/0168304 (2002-11-01), Boehnke et al.
patent: 2003/0003030 (2003-01-01), Knight
patent: 2003/0003031 (2003-01-01), Bruck et al.
patent: 2003/0039596 (2003-02-01), Johnson et al.
patent: 2003/0113241 (2003-06-01), Craig et al.
Lancaster Paul B.
Tursky John M.
Buff Ernest D.
Caldarola Glenn
Duong Tom P.
Ernest D. Buff & Associates LLC
Evolution Industries, Inc.
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