US 12,479,775 B2
Chemical vapor infiltration tooling for optimizing infiltration in ceramic matrix composites
Daniel P. Preuss, Glastonbury, CT (US); Andrew Joseph Lazur, La Jolla, CA (US); Brendan Lenz, Wethersfield, CT (US); Lane M. Thornton, Tolland, CT (US); and Mary Colby, West Hartford, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Mar. 7, 2023, as Appl. No. 18/118,460.
Prior Publication US 2024/0300863 A1, Sep. 12, 2024
Int. Cl. C04B 41/45 (2006.01)
CPC C04B 41/4529 (2013.01) [C04B 41/457 (2013.01); C04B 41/4584 (2013.01); C04B 2235/614 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tooling fixture suitable for use in infiltrating a fibrous preform with a flow of reactant gas, the tooling fixture comprising:
a plurality of walls arranged to define an enclosure for a fibrous preform, each of the plurality of walls comprising:
an outer surface and opposing inner surface defining a thickness therebetween, the inner surface disposed to face the fibrous preform; and
a plurality of holes extending through the thickness of at least a first wall of the plurality of walls, each hole of the plurality of holes comprising:
an inlet at the outer surface;
an outlet at the inner surface; and
a transition point between the inlet and the outlet;
wherein the outer surface transitions into the inlet via a first corner;
wherein an angle of the first corner is greater than 90 degrees;
wherein each hole of the plurality of holes has a first diameter at the inlet and a second diameter at the outlet; and
wherein the second diameter is less than the first diameter.