# US 10,502,183 B2 · Wind turbine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,183 B2 - Document ID: US10502183B2 - Status: Granted - Kind: B2 - Application number: 15/036,944 - Filed: 2014-11-14 - Published: 2016-10-06 - Granted: 2019-12-10 - Earliest claimed: 2013-11-15 - Applicants: Tommaso Morbiato - Inventors: Tommaso Morbiato - Web page: https://patentgrep.com/patent/US10502183B2 ## CPC - F03D 3/064: {Fixing wind engaging parts to rest of rotor} - F03D 7/06: the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor - F05B 2240/202: with adjustable area of intercepted fluid - F05B 2240/214: of the Musgrove or "H"-type - F05B 2250/41: with one degree of freedom - F05B 2260/502: involving springs - F05B 2260/85: Starting - Y02E 10/74: Wind turbines with rotation axis perpendicular to the wind direction - F03D: WIND MOTORS - F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A wind turbine includes a rotation axis suited to be positioned in space in any way and N blades indirectly constrained to the axis through one or more radial arms that are integral with the axis, wherein the blades can translate in a radial direction with respect to the axis during the rotation of the blades. ## Claims ### Claim 1 A wind turbine (A) comprising: a rotation axis (Z, Y) configured to be positioned in space in any way and a plurality of blades (1) constrained to said axis (Z, Y), wherein each one of said blades (1) is indirectly constrained to said axis (Z, Y) through one or more radial arms (3) that are integral with said axis (Z,Y), wherein said blades (1) are configured to translate in a radial direction with respect to said axis (Z, Y) during rotation of the blades (1), wherein, by varying a distance of each of said blades (1) from said axis (Z, Y), a radius of a rotor varies as does a main inertia of said wind turbine, from a minimum value at startup to higher values, such to limit a decrease and favor an increase in speed of the rotation, respectively in case of a decrease or increase of transitional winds, wherein each one of said blades (1) is constrained to the corresponding arms (3) to counteract said radial translation of the blades (1) at least in the direction away from said axis (Z, Y), said blades being constrained by one or more elastic members or springs (13) coaxially inserted in said arms (3) and being directly or indirectly constrained to said arms (3) with one end (132) and to said blade (1) with an opposite end (131), wherein each one of said blades (1) translates in a radial direction along the respective arms (3) rolling on rails or grooves or slits (2) obtained in the arms (3), and wherein each blade (1) comprises: at least one hole (8) for insertion of the arm (3), into a shape matching a shape of the arm (3) with a play (9) along a circumferential direction; a frame (5) mounted in said hole (8) of said blade (1) and integral with the blade (1); and at least one main wheel (4) configured to rotate in said rails (2) or grooves or slits inside said arm (3) and mounted on said frame (5). ### Claim 2 (depends on 1) The wind turbine (A) according to claim 1, wherein, in said play (9) between the blade (1) and the arm (3), there are one or more smaller wheels (10) or bearings constrained to said frame (5) of the blade (1), with or without play (11, 11*) between their rolling profile and an external wall (33) of the radial arm (3), in order to allow or prevent any change in an inclination between said blade (1) and the respective arms (3). ### Claim 3 (depends on 1) The wind turbine (A) according to claim 1, further comprising, on each one of said arms (3), at least one stop element (CC, CC1) configured to limit an outward translation of said blades (1), wherein, when said blades (1) are at the maximum distance from the axis (Z, Y), said blades (1) rest against said at least one stop element (CC, CC1), forming a resulting aerodynamic profile (P) determined by a combination of a profile of the blade (1) with a profile of the stop element (CC, CC1). ### Claim 4 (depends on 3) The wind turbine (A) according to claim 3, wherein said resulting aerodynamic profile (P) is symmetrical. ### Claim 5 (depends on 3) The wind turbine (A) according to claim 3, wherein there is a stop element (CC) on each one of said arms (3). ### Claim 6 (depends on 3) The wind turbine (A) according to claim 3, wherein the wind turbine comprises a single extended stop element (CC1) mounted between the arms (3) of the same blade (1), said extended stop element (CC1) and said blade (1) having asymmetrical aerodynamic profiles such that at high speeds the resulting aerodynamic profile, with the blade (1) positioned at the maximum distance, substantially produces a higher torque in the wind turbine (A), than the torque of the profile of the blade (1). ### Claim 7 (depends on 6) The wind turbine (A) according to claim 6, wherein said stop element and a tip of said blades (1) each have a straight leading edge (102) and a blunted trailing edge (101) so as to reduce vorticity and consequently energy losses upstream. ### Claim 8 (depends on 1) The wind turbine (A) according to claim 1, wherein said wind turbine (A), with the axis (Y) arranged horizontally, has blades (1) distributed in an asymmetrical way during a start stage, such that one or more of said blades (1) has/have a different distance from the axis (Y) compared to one or more additional blades (1), in order to favor a position of selective stop, and wherein said distance of the blades (1) from said axis (Y) is regulated by stiffness, configuration, mechanical characteristics of said elastic members or springs (13), and/or by application and distribution of one or more weights on one or more of said blades (1) and/or on one or more of said arms (3) such to obtain a desired unbalance.