Metal working – Method of mechanical manufacture – Catalytic device making
Reexamination Certificate
2005-08-02
2005-08-02
Jimenez, Marc (Department: 3726)
Metal working
Method of mechanical manufacture
Catalytic device making
C029S458000, C029S527200, C029S455100, C422S179000, C422S180000, C422S221000, C422S222000, C060S299000
Reexamination Certificate
active
06922891
ABSTRACT:
A manufacturing process for producing a particulate reactor substrate according to the invention includes the steps of first roll-stamping small, raised dimples into the fabric substrate to control its coiled density. The dimpled fabric then undergoes high temperature firing for hardening and degreasing, and then water quenching to harden the metal which improves heat tolerance. The treated metal weave is then aluminum oxide shot-blasted to etch the fabric surface for improved ceramic coating adhesion and to increase surface area. Next, the fabric is coated with a wet slurry of an undercoating (“wash coat”) prior to spooling and pressing the fabric into individualized cartridges that are held tightly wound by an encircling sleeve. Next, the sleeved spools are oven-fired and then the fired spools are impregnated with the catalytic precious metal. The impregnated sheathed spools are finally oven-fired again and “canned” into an outer enclosure.
REFERENCES:
patent: 4098722 (1978-07-01), Cairns et al.
patent: 4205420 (1980-06-01), Bothwell
patent: 4711009 (1987-12-01), Cornelison et al.
patent: 4935392 (1990-06-01), Kainer et al.
patent: 5018272 (1991-05-01), Seeger et al.
patent: 5265419 (1993-11-01), Bergmann et al.
patent: 5406704 (1995-04-01), Retallick
patent: 5608968 (1997-03-01), Maus et al.
patent: 5656245 (1997-08-01), Fujisawa et al.
patent: 5776419 (1998-07-01), Ihara et al.
patent: 6245302 (2001-06-01), Fujitsubo
patent: 6284201 (2001-09-01), Buck
patent: 6436873 (2002-08-01), Brocker et al.
patent: 2004/0043899 (2004-03-01), Mangold et al.
Gore Gregory J.
Jimenez Marc
LandOfFree
Method of manufacturing a catalytic converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing a catalytic converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a catalytic converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3498771