The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1994
Filed:
Jul. 01, 1993
Michael J Bak, White Lake, MI (US);
Thomas A Culbertson, Orchard Lake, MI (US);
Williams International Corporation, Walled Lake, MI (US);
Abstract
A conical microlith catalyst reaction system for use in automotive catalytic converters or gas turbine catalytic combustors advantageously utilizes a microlith catalyst bed formed from a wire cloth (10) woven into a spiral wound flat helix (or coil). The spiral windings of the wire cloth helix are wound to form a uniform angle less than 90.degree. relative to a ceramic housing formed from an inner ceramic hub (102) and an outer ceramic shroud (104). Warp wires (12) further carry electrical current via bus bars (106, 108) for electrically heating the catalyst bed. Lightoff time for the bed is significantly reduced due to the heating. The angled spiral windings create the conical shape to prevent buckling of the spiral windings due to thermal stress caused by the microlith catalyst bed becoming hot.