# US 11,441,592 B2 · Anti-rotation device for fasteners > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,592 B2 - Document ID: US11441592B2 - Status: Granted - Kind: B2 - Application number: 15/981,590 - Filed: 2018-05-16 - Published: 2019-11-21 - Granted: 2022-09-13 - Earliest claimed: 2018-05-16 - Assignees: Raytheon Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Kevin Kassel; Scot A. Webb - Web page: https://patentgrep.com/patent/US11441592B2 ## CPC - F02C 3/06: the compressor comprising only axial stages (F02C3/10 takes precedence) - F16B 39/10: by a plate, {spring, wire} or ring immovable with regard to the bolt or object {and mainly perpendicular to the axis of the bolt}(F16B39/08 takes precedence) - F01D 17/10: Final actuators (valves in general F16K {; blades with variable camber F01D5/148}) - F01D 17/162: {for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D17/167 takes precedence)} - F05D 2220/323: for aircraft propulsion, e.g. jet engines - F05D 2260/31: Retaining bolts or nuts - F05D 2260/36: by a form fit connection, e.g. by interlocking - F16B 21/183: {internal, i.e. with spreading action} - 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) - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract A locking plate for restricting rotation of a fastener connecting a first component of a gas turbine engine and a second component of a gas turbine engine includes a base having a planar surface receivable in overlapping arrangement with a head of the fastener. A locking portion extends from the base. Engagement between the locking portion and the first component restricts rotation of the locking portion. A key extends from the base and is connectable to the fastener such that the fastener is not rotatable relative to the key when the locking portion has engaged the first component. ## Claims ### Claim 1 An interface comprising: a first component including a bracket having a first hole formed therein; a second component including a link coupled to a spherical bearing, the spherical bearing having a second hole formed therein, the second component being positioned adjacent the first component such that the first hole and the second hole are axially aligned; a fastener positioned within the first hole and the second hole to couple the first component to the second component, the fastener including a head having a wrenching feature formed therein; and a locking plate receivable in overlapping arrangement with the fastener, the locking plate including a first portion connectable to the fastener and a second portion configured to cooperate with the first component to restrict rotation of the locking plate about the longitudinal axis of the fastener, wherein the first portion of the locking plate includes a key, the key being receivable within the wrenching feature to rotatably couple the locking plate to the fastener. ### Claim 2 (depends on 1) The interface of claim 1, wherein the locking plate includes a base receivable in overlapping arrangement with the fastener, and the first portion of the locking plate includes a key and the second portion of the locking plate includes a locking portion. ### Claim 3 (depends on 2) The interface of claim 2, wherein the key is integrally formed with the base. ### Claim 4 (depends on 2) The interface of claim 2, wherein the key is configured to couple to the base. ### Claim 5 (depends on 2) The interface of claim 2, wherein the first component further comprises: a surface; and at least one bracket feature extending from the surface of the first component. ### Claim 6 (depends on 5) The interface of claim 5, wherein the locking portion cooperates with the at least one bracket feature to restrict rotation of the locking plate about the longitudinal axis of the fastener. ### Claim 7 (depends on 5) The interface of claim 5, further comprising a retaining ring positioned to restrict axial movement of the locking plate out of engagement with the fastener. ### Claim 8 (depends on 7) The interface of claim 7, wherein the at least one bracket feature further comprises an inner surface having a groove formed therein, the retaining ring being mounted within the at least one groove. ### Claim 9 (depends on 1) The interface of claim 1, wherein the first component and the second component are part of an actuation system usable in a high pressure compressor of a gas turbine engine.