US 12,480,721 B2
Cast plate heat exchanger and method of making using directional solidification
Michael A. Disori, Glastonbury, CT (US); Steven J. Bullied, Pomfret Center, CT (US); Ryan C. Breneman, West Hartford, CT (US); John Marcin, Marlborough, CT (US); David J. Hyland, Portland, CT (US); William P. Stillman, Sturbridge, MA (US); and Carl R. Verner, Windsor, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Oct. 31, 2023, as Appl. No. 18/385,635.
Application 18/385,635 is a continuation of application No. 16/271,267, filed on Feb. 8, 2019, granted, now 11,808,529.
Claims priority of provisional application 62/647,066, filed on Mar. 23, 2018.
Prior Publication US 2024/0060728 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F28F 1/26 (2006.01); B22D 27/04 (2006.01)
CPC F28F 1/26 (2013.01) [B22D 27/045 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A cast part comprising:
an outermost wall; and
a first inner wall, a second inner wall, and a third inner wall which define at least four internal passages, wherein any cross-sectional circular area spanning at least a portion of each of said four internal passages includes a ratio of interior empty space to inner wall space that is greater than zero and no greater than 3.6.