# US 10,479,155 B2 · Cladding structure and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,155 B2 - Document ID: US10479155B2 - Status: Granted - Kind: B2 - Application number: 15/435,221 - Filed: 2017-02-16 - Published: 2018-08-16 - Granted: 2019-11-19 - Earliest claimed: 2017-02-16 - Assignees: Caterpillar Inc. - Applicants: Caterpillar Inc. - Inventors: John Johnson - Web page: https://patentgrep.com/patent/US10479155B2 ## CPC - B60G 7/001: {Suspension arms, e.g. constructional features (B60G7/006 takes precedence)} - B23K 9/04: Welding for other purposes than joining, e.g. built-up welding - B23K 26/34: Laser welding for purposes other than joining - B33Y 10/00: Processes of additive manufacturing - B33Y 80/00: Products made by additive manufacturing - B23K 2101/006: {Vehicles} - B60G 2206/10: Constructional features of arms - B62D 55/14: Arrangement, location, or adaptation of rollers - B62D 55/20: of articulated type, e.g. chains {(with lubrication means B62D55/092)} - F16C 3/00: Shafts (flexible shafts F16C1/00; marine propeller shafts, paddle wheel shafts B63H23/34); Axles; Cranks; Eccentrics - F16H 55/00: Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms (of screw-and-nut gearing F16H25/00) - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - F16H: GEARING ## Abstract A cladding structure and method for cladding machine components to inhibit crack propagation includes at least one set of primary bands, with each primary band being deposited adjacent to and abutting at least one other primary band, forming at least one inter-pass clad boundary, and at least one set of secondary bands deposited in a spaced configuration and oriented so as to intersect at least one inter-pass clad boundary. ## Claims ### Claim 1 A machine component comprising: a body including a one-piece core formed of a core material and having at least one fatigue sensitive region and at least one fatigue insensitive region, and a cladding formed upon the one-piece core and extending throughout the at least one fatigue sensitive region; the cladding being formed by a set of primary bands of cladding material deposited upon and bonded to the one-piece core in contact with the core material, and a set of secondary bands of cladding material deposited upon and bonded to the one-piece core in contact with the core material; each of the primary bands being adjacent to and abutting at least one other primary band; and each of the secondary bands being oriented transverse to a plurality of the primary bands to inhibit propagation of cracks within an inter-pass clad boundary formed between adjacent ones of the primary bands; and each of the secondary bands being spaced apart from one another and each oriented so as to interrupt at least one of the inter-pass clad boundaries. ### Claim 2 (depends on 1) The machine component of claim 1 wherein the body includes an elongate shaft defining a longitudinal axis extending between a first end of the elongate shaft and a second end of the elongate shaft, and wherein the at least one fatigue sensitive region includes an axial segment of the elongate shaft that extends circumferentially around the longitudinal axis, and at least one of the set of primary bands or the set of secondary bands has an axial extent not less than an axial extent of the at least one fatigue sensitive region. ### Claim 3 (depends on 2) The machine component of claim 2 wherein the one-piece core has a cylindrical section and a conical section, and the fatigue sensitive region is formed at least in part by a transition between the cylindrical section and the conical section. ### Claim 4 (depends on 3) The machine component of claim 3 wherein the secondary bands are parallel to the longitudinal axis within the cylindrical section and spaced circumferentially around the longitudinal axis, and wherein the secondary bands are inclined to the longitudinal axis within the conical section and spaced circumferentially around the longitudinal axis. ### Claim 5 (depends on 2) The machine component of claim 2 wherein the machine component is a strut having an opening formed in the second end of the elongate shaft. ### Claim 6 A machine component comprising: an elongate body defining a longitudinal axis, the elongate body including a core formed of a core material, and a cladding upon the core, the cladding including a set of primary bands and a set of secondary bands, and each of the set of primary bands and the set of secondary bands being in contact with the core material; the primary bands being oriented adjacent to and abutting at least one other primary band, such that an inter-pass clad boundary extends between adjacent ones of the primary bands, the adjacent ones of the primary bands extending at least 360 degrees around the longitudinal axis such that the inter-pass clad boundary forms a continuous boundary around the machine component; the set of secondary bands being spaced apart from one another and each oriented so as to interrupt at least one of the inter-pass clad boundaries; and at least one of the inter-pass clad boundaries being uninterrupted by the set of secondary bands. ### Claim 7 (depends on 6) The machine component of claim 6 wherein an angle between each of the secondary bands and the at least one inter-pass clad boundary is from 45 degrees to 90 degrees. ### Claim 8 (depends on 6) The machine component of claim 6 wherein each of the primary bands wraps at least once around a perimeter of the machine component. ### Claim 9 (depends on 2) The machine component of claim 2 wherein an axial extent of the set of primary bands is greater than an axial extent of the set of secondary bands. ### Claim 10 (depends on 8) The machine component of claim 8 wherein an axial extent of the set of primary bands is not less than an axial extent of the set of secondary bands. ### Claim 11 (depends on 6) The machine component of claim 6 further including a fatigue sensitive region and a fatigue insensitive region, wherein the cladding extends throughout the fatigue sensitive region into the fatigue insensitive region such that at least one of the primary bands is upon the core within the fatigue insensitive region. ### Claim 12 (depends on 11) The machine component of claim 11 wherein the fatigue sensitive region includes a transition from a first type of material to a second type of material. ### Claim 13 (depends on 6) The machine component of claim 6 wherein the set of secondary bands are bonded to the core. ### Claim 14 (depends on 6) The machine component of claim 6 wherein the cladding includes a first type of segment and a second type of segment, the first type of segment having a patterned appearance and including the set of primary bands and the set of secondary bands, and the second type of segment having a substantially smooth appearance substantially free of patterning. ### Claim 15 (depends on 14) The machine component of claim 14 wherein the machine component is a remanufactured machine component having a core removed from service in a machine, the second type of segment of the cladding having the same composition as the core.