# US 9,518,662 B2 · Control valve trim cage having a plurality of anti-cavitation or noise abatement bars > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,662 B2 - Document ID: US9518662B2 - Status: Granted - Kind: B2 - Application number: 13/895,789 - Filed: 2013-05-16 - Published: 2014-11-20 - Granted: 2016-12-13 - Earliest claimed: 2013-05-16 - Assignees: Fisher Controls International LLC - Applicants: Fisher Controls International LLC - Inventors: Aaron C. Doran - Web page: https://patentgrep.com/patent/US9518662B2 ## CPC - F16K 1/32: Details (details of more general applicability F16K25/00 - F16K51/00) - F16K 47/08: for decreasing pressure {or noise level} and having a throttling member separate from the closure member {, e.g. screens, slots, labyrinths} - F16K 47/04: for decreasing pressure {or noise level}, the throttle being incorporated in the closure member - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract A cage for a control valve trim assembly includes a cage wall, a first plate attached to the cage wall, a second plate spaced apart from the cage wall, and a first plurality of rods longitudinally disposed between the first plate and the second plate. Fluid flowing through the cage is characterized by the first plurality of rods. ## Claims ### Claim 1 A control valve comprising: a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway; a valve seat disposed within the fluid passageway; a cage disposed within the fluid passageway, the cage including a cage wall, a first plate connected to the cage wall and a second plate spaced apart from the cage wall, and a first plurality of rods longitudinally disposed between the first plate and the second plate; a flow control member movably disposed within the cage, the flow control member reciprocating within the cage and cooperating with the valve seat to control fluid flow through the fluid passageway; and a third plate disposed between the first plate and the second plate, wherein rods in the first plurality of rods are spaced laterally differently between the second plate and the third plate than between the first plate and the third plate; and wherein each rod in the plurality of rods has a circular cross-section. ### Claim 2 (depends on 1) The valve of claim 1, further comprising a second plurality of rods longitudinally disposed between the first plate and the second plate, each rod in the second plurality of rods having a circular cross-section. ### Claim 3 (depends on 2) The valve of claim 2, wherein the rods in the first plurality of rods are arranged to form a first circle when the cage is viewed in a lateral cross-section, the first circle having a first radius. ### Claim 4 (depends on 3) The control valve of claim 3, wherein the rods in the second plurality of rods are arranged to form a second circle when the cage is viewed in a lateral cross-section, the second circle having a second radius. ### Claim 5 (depends on 4) The control valve of claim 4, wherein the first radius is larger than the second radius. ### Claim 6 (depends on 5) The valve of claim 5, further comprising a third plurality of rods longitudinally disposed between the first plate and the second plate, each rod in the third plurality of rods having a circular cross-section, wherein the rods in the third plurality of rods are arranged to form a third circle when the cage is viewed in a lateral cross-section, the third circle having a third radius, and wherein the first and second radii are larger than the third radius. ### Claim 7 (depends on 4) The valve of claim 4, wherein the rods in the first plurality of rods are separated from one another about a circumference of the first circle by a distance of between 1/32 and 10 times a diameter of an individual rod. ### Claim 8 (depends on 7) The valve of claim 7, wherein the rods in the second plurality of rods are arranged circumferentially around the second circle to be offset from the rods in the first plurality of rods. ### Claim 9 (depends on 1) The valve of claim 1, wherein the third plate is located between 10% and 30% of the distance from the second plate to the first plate. ### Claim 10 (depends on 1) The valve of claim 1, further comprising a fourth plate disposed between the first plate and the second plate. ### Claim 11 A cage for a control valve trim assembly, the cage comprising: a cage wall; a first plate attached to the cage wall; a second plate spaced apart from the cage wall; a third plate disposed between the first plate and the second plate; and a first plurality of rods longitudinally disposed between the first plate and the second plate, wherein rods in the first plurality of rods are spaced laterally differently between the second plate and the third plate than between the first plate and the third plate; and wherein each rod in the first plurality of rods has a circular cross-section. ### Claim 12 (depends on 11) The cage of claim 11, further comprising a second plurality of rods longitudinally disposed between the first plate and the second plate, wherein each rod in the second plurality of rods has a circular cross-section. ### Claim 13 (depends on 12) The cage of claim 12, wherein the first plurality of rods are arranged to form a first circle having a first radius when the cage is viewed in lateral cross-section. ### Claim 14 (depends on 13) The cage of claim 13, wherein the second plurality of rods are arranged to form a second circle having a second radius when the cage is viewed in lateral cross-section. ### Claim 15 (depends on 14) The cage of claim 14, wherein the first radius is larger than the second radius. ### Claim 16 (depends on 15) The cage of claim 15, wherein the rods of the second plurality of rods are circumferentially offset from the rods of the first plurality of rods. ### Claim 17 (depends on 11) The cage of claim 11, wherein the third plate is located between 10% and 30% of the distance between the second plate and the first plate.