Appeal 2007-4013
Application 09/768,512
Claim 1 illustrates Appellants’ invention of a metallic carrier for a
catalytic converter, and is representative of the claims on appeal:
1. A metallic carrier for a catalytic converter comprising:
a corrugated sheet made of metal;
a flat sheet made of metal;
a core formed by superposing the corrugated sheet and flat sheet one
on another and by rolling the corrugated sheet and the flat sheet in multiple
times;
an unmelted brazing foil material disposed around an outer periphery
of an exhaust gas outlet side of the core; and
a metallic outer cylinder into which an assembly including the core
and the unmelted brazing foil material is press-fitted, the metallic outer
cylinder subjected to heat treatment to diffusionally join the corrugated sheet
and flat sheet, and join an inner periphery of the metallic outer cylinder and
an outer periphery of the core by the unmelted brazing foil material,
wherein a solder-rising preventing groove is defined over an entire
circumference of the inner periphery of the outer cylinder at a position
located on an exhaust gas inlet side of an area for joining the core,
wherein the unmelted brazing foil material is not disposed in the
solder-rising preventing groove, and
wherein the solder-rising preventing groove prevents melted brazing
foil material, melted by the heat treatment, from flowing toward the exhaust
gas inlet side of the core.
The Examiner relies on the evidence in these references:
Nonnenmann US 4,282,186 Aug. 4, 1981
Usui (Usui ‘774) US 4,948,774 Aug. 14, 1990
Usui (Usui ‘611) US 5,026,611 Jun. 25, 1991
Shimada1 JP 8-141413 A Jun. 4, 1996
1 We consider the English translation of Shimada prepared for the USPTO
by the McElroy Translation Company (PTO 07-4724 June 2007).
2
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