Evan N Dozier

US Patent:

20230013204, Jan 19, 2023

Filed:

Jul 15, 2021

Appl. No.:

17/376291

Inventors:

- Schenectady NY, US
Evan John Dozier - Greenville SC, US

International Classification:

B22F 12/30
B33Y 30/00

Abstract:

An additive manufacturing (AM) system includes a build chamber, a base adjustably coupled to the build chamber, and a build material applicator for depositing a build material above a build platform for creating the object. The build platform includes a fixed region fixedly and rigidly coupled to the base and a flex region configured to flex relative to the base in response to a force applied to the build platform by an object. The partial flexibility allows deformation caused by thermal distortion of the build platform during use to reduce final object stress. The AM system can produce larger additively manufactured objects out of crack-prone material. In addition, the partial flexibility may prevent damage to the build platform and/or base without an overly complicated arrangement.

US Patent:

20210156276, May 27, 2021

Filed:

Nov 25, 2019

Appl. No.:

16/693856

Inventors:

- Schenectady NY, US
Evan John Dozier - Greenville SC, US
Claire Fridtjof Lang - Greenville SC, US

International Classification:

F01D 25/12
F01D 11/08

Abstract:

Turbine shrouds including shot peen screens integrally formed therein. The shroud may include a unitary body having a support portion coupled directly to a turbine casing of the turbine system, an intermediate portion integral with and extending away from the support portion, and a seal portion integral with the intermediate portion, opposite the support portion. The unitary body may also include an inlet opening(s) formed in the support portion, a plenum(s) in fluid communication with the inlet opening(s), and a cooling passage extending through the seal portion and in fluid communication with the plenum(s). Additionally, the unitary body may include a shot peen screen(s) positioned within the plenum(s) and extending within the intermediate portion. The shot peen screen(s) may include a plurality of voids formed therethrough and may prevents shot from passing through the shot peen screen(s) when performing a shot peening process on the unitary body.