US 12,276,291 B2
Valve bore wash filters
Robert DeFelice, South Windsor, CT (US); and Frank N. Perillo, Cromwell, CT (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Nov. 16, 2022, as Appl. No. 17/988,351.
Prior Publication US 2024/0159257 A1, May 16, 2024
Int. Cl. F16K 31/12 (2006.01); F15B 21/041 (2019.01)
CPC F15B 21/041 (2013.01) [F16K 31/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filter comprising:
a first edge structure forming a first ring about an axis;
a second edge structure forming a second ring about the axis, axially spaced apart from the first ring along the axis; and
a filter medium extending from the first edge structure to the second edge structure, wherein the first and second edge structures are configured to engage an internal surface of a main bore of a valve housing, and wherein the filter medium is configured to allow air flow through the filter medium from the main bore radially outward through the filter medium to filter particulate out of an airflow from the main bore passing radially outward through the filter medium;
wherein the first ring, the second ring, and the filter medium are of aluminum, stainless steel, and/or an austenitic nickel-chromium-based superalloy.