Aerodynamic noise reduction cage

US10539252B2 · kind B2 · utility

Assignee

• Fisher Controls International LLC · US

Inventors

• Daniel M. Adams · San Fernando, US
• Allen C. Fagerlund · Marshalltown, US
• James L. Gossett · Marshalltown, US
• Patrick L. O'Shea · Marshalltown, US
• Daniel J. Eilers · Marshalltown, US
• William E. Wears · Marshalltown, US

Key dates

• Filing date: Aug 10, 2017
• Grant date: Jan 21, 2020
• Expiry date: Nov 25, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K3/246
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A control valve has a body having an inlet and outlet, a valve seat between the inlet and outlet, a valve plug, and a cage adjacent the valve seat to provide guidance for the valve plug. The valve plug is movable between a closed position, where the valve plug sealingly engages the valve seat, and an open position, where the valve plug is spaced away from the valve seat. The cage has a solid, unitary circumferential wall having inner and outer surfaces and a plurality of passages formed through the wall. Each passage extends between the inner and outer surfaces and follows an arcuate, non-linear path from the inner surface to the outer surface.