US 12,215,802 B2
Method of manufacturing a fluid pressure reduction device
Thomas N. Gabriel, Marshalltown, IA (US); and Michael W McCarty, Marshalltown, IA (US)
Assigned to FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US)
Filed by FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US)
Filed on Jul. 10, 2023, as Appl. No. 18/220,164.
Application 18/220,164 is a continuation of application No. 16/927,933, filed on Jul. 13, 2020, granted, now 11,719,362.
Application 16/927,933 is a continuation of application No. 15/887,659, filed on Feb. 2, 2018, granted, now 10,711,937, issued on Jul. 14, 2020.
Claims priority of provisional application 62/511,181, filed on May 25, 2017.
Prior Publication US 2023/0349488 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16K 47/08 (2006.01); F16K 47/12 (2006.01); F16L 55/027 (2006.01); B33Y 80/00 (2015.01)
CPC F16K 47/08 (2013.01) [F16K 47/12 (2013.01); F16L 55/02772 (2013.01); F16L 55/02781 (2013.01); B33Y 80/00 (2014.12)] 19 Claims
OG exemplary drawing
 
1. A fluid pressure reduction device for use in a fluid flow control device, the fluid pressure reduction device comprising:
a unitary body having a top end, a bottom end opposite the top end, an inner wall, and an outer wall spaced radially outward of the inner wall;
a plurality of flow paths formed in the body between the inner wall and the outer wall, each of the flow paths comprising an inlet section formed in the inner wall, an outlet section formed in the outer wall, and a curved intermediate section between the inlet and outlet sections, wherein the inlet section of each of the flow paths is oriented along a respective inlet axis and has an inlet length measured along the respective inlet axis, and
wherein the inlet length of the inlet section of each of the flow paths changes based on an axial location of the respective flow path relative to the bottom end.