# US 10,119,478 B2 · High reliability high flow redundant trip block > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,478 B2 - Document ID: US10119478B2 - Status: Granted - Kind: B2 - Application number: 14/750,750 - Filed: 2015-06-25 - Published: 2016-12-29 - Granted: 2018-11-06 - Earliest claimed: 2015-06-25 - Assignees: Woodward, Inc. - Applicants: John J. Been; Michael S. Zrubek; Jonathan P. Workman - Inventors: John J. Been; Michael S. Zrubek; Jonathan P. Workman - Web page: https://patentgrep.com/patent/US10119478B2 ## CPC - F02C 9/26: Control of fuel supply (F02C9/48 takes precedence; fuel valves F02C7/232) - F01D 21/18: involving hydraulic means - F02C 7/232: Fuel valves {(control of fuel supply by means of fuel metering valves F02C9/263)}; Draining valves or systems (valves in general F16K) - F15B 13/0406: {for rotary valves} - F15B 13/0842: {Monoblock type valves, e.g. with multiple valve spools in a common housing} - F15B 20/008: {Valve failure} - F16K 11/06: comprising only sliding valves {, i.e. sliding closure elements} - F16K 27/04: of sliding valves - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR - 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 trip block is provided. The trip block includes a single housing which commonly houses multiple valve assemblies. Each valve assembly includes a rotary valve member arrangement. The rotary valve member arrangement includes a spool and a sleeve with a predefined radial clearance between the spool and sleeve. ## Claims ### Claim 1 A trip block, comprising: a housing having an inlet, an outlet, and a plurality of interconnected passageways; a plurality of valve assemblies, wherein a portion of each valve assembly is housed within the housing, wherein each valve assembly of the plurality of valve assemblies includes a rotary valve member arrangement and an actuator for actuating the rotary valve member arrangement; wherein each one of the plurality of valve assemblies is arranged within the housing to govern a flow of fluid between the inlet and the outlet; wherein the rotary valve member arrangement of each one of the plurality of valve assemblies includes a spool rotatably disposed within a sleeve; wherein the spool includes a shaft and at least one valve member mounted to the shaft wherein the at least one valve member is cup-shaped and includes a plurality of ports extending through a sidewall of the at least one valve member; wherein an interior surface of the sidewall of the at least one valve member includes a continuous groove which extends across each one of the plurality of ports such that the side wall has a reduced cross sectional thickness in an area of each port. ### Claim 2 A trip block, comprising: a housing having an inlet and an outlet; a first valve assembly partially disposed within a first cavity of the housing, the first cavity extending normal to a direction of flow between the inlet and outlet; a second valve assembly partially disposed within a second cavity of the housing, the second cavity normal to the direction of flow between the inlet and the outlet; a third valve assembly partially disposed within a third cavity of the housing, the third cavity normal to the direction of flow between the inlet and the outlet; a first flow passage extending only between the first cavity and the second cavity; a second flow passage extending only between the first cavity and the second cavity; a third flow passage extending only between the second cavity and the third cavity; and a fourth flow passage extending between the first cavity, the second cavity, and the third cavity. ### Claim 3 (depends on 2) The trip valve of claim 2, wherein each of the first, second, and third flow passages includes an enlarged portion at endpoints of the respective first, second, and third flow passage. ### Claim 4 (depends on 3) The trip valve of claim 3, wherein the enlarged portion has a cross sectional area normal to a direction of flow between the inlet and the outlet which is larger than a cross sectional area normal to the direction of flow of each respective flow passage adjacent the enlarged portion thereof. ### Claim 5 (depends on 3) The trip valve of claim 3, wherein the first, second, and third valve assemblies each includes a rotary valve member arrangement, an actuator for actuating the rotary valve member arrangement, and a return device coupled to the valve member arrangement. ### Claim 6 (depends on 5) The trip valve of claim 5, wherein the rotary valve member arrangement includes a spool rotatably mounted within a sleeve of the rotary valve member arrangement. ### Claim 7 (depends on 6) The trip valve of claim 6, wherein the sleeve includes a plurality of seals along an outer periphery thereof for sealingly engaging an interior surface of the housing. ### Claim 8 (depends on 6) The trip block of claim 6, wherein a radial gap is formed between an outer periphery of at least one valve member of the spool and an inner periphery of the sleeve. ### Claim 9 (depends on 8) The trip block of claim 8, wherein the radial gap is 0.0005 inches to 0.005 inches. ### Claim 10 (depends on 6) The trip block of claim 6, wherein the spool is rotatably supported by a bearing adjacent each end of the spool, wherein the bearings are axially outside of a plurality of seals of the valve assembly such that the bearings are not exposed to a fluid flowing through the housing. ### Claim 11 A method for making a trip block, the method comprising the steps of: providing a housing; situating a portion of each of a plurality of valve assemblies within said housing, wherein each valve assembly includes a rotary valve member arrangement; wherein the step of providing the housing includes providing the housing with a first, a second, and a third cavity extending parallel to one another, and providing the housing with a first flow passage extending only between the first cavity and the second cavity, a second flow passage extending only between the first cavity and the second cavity, a third flow passage extending only between the second cavity and the third cavity, and a fourth flow passage extending between the first cavity, the second cavity, and the third cavity.