# US 11,993,952 B1 · Earthquake stabilization device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,993,952 B1 - Document ID: US11993952B1 - Status: Granted - Kind: B1 - Application number: 18/348,979 - Filed: 2023-07-07 - Published: 2024-06-06 - Granted: 2024-05-28 - Earliest claimed: 2020-04-03 - Assignees: Duplicent, LLC - Applicants: Duplicent, LLC - Inventors: Curren Emmett Krasnoff - Web page: https://patentgrep.com/patent/US11993952B1 ## CPC - E04H 9/021: {Bearing, supporting or connecting constructions specially adapted for such buildings} - E04H 9/0215: {involving active or passive dynamic mass damping systems} - E02D 27/34: Foundations for sinking or earthquake territories (building constructions with protection arrangements against earthquakes E04H9/02) - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) - E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)} ## Abstract A stabilization system for a building includes a stabilization assembly configured to couple to a floor structure of a building. The stabilization assembly includes a track defining a track path, a weight slidably coupled to the track, and an actuator configured to move the weight along the track path. ## Claims ### Claim 1 A stabilization system for a building, the stabilization system comprising: a stabilization assembly configured to couple to a floor structure of a building, the stabilization assembly including: a rotatable platform; a track coupled to the rotatable platform, the track defining a track path; a weight slidably coupled to the track; a tensile member engaging a drive wheel coupled to the weight; at least tow actuators configured to rotate the rotatable platform in a first direction and a second direction, and move the weight along the track path in a third direction and a fourth direction; at least one sensor configured to acquire measurement data relating to a seismic event; and a controller configured to: determine a target response of the stabilization assembly that mitigates an effect of the seismic event on the building based on the measurement data, and control the at least two actuators to rotate the rotatable platform in at least one of the first direction or the second direction, and move the weight along the track path in at least one of the third direction or the fourth direction according to the target response. ### Claim 2 (depends on 1) The stabilization system of claim 1, wherein the first direction is clockwise and the second direction is counterclockwise. ### Claim 3 (depends on 2) The stabilization system of claim 2, wherein the third direction is opposite to the fourth direction. ### Claim 4 (depends on 1) The stabilization system of claim 1, wherein the third direction is opposite to the fourth direction. ### Claim 5 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor comprises a plurality of sensors. ### Claim 6 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor comprises a plurality of sensors. ### Claim 7 (depends on 1) The stabilization system of claim 1, wherein the at least two actuators comprise a first actuator configured to rotate the rotatable platform in the first direction and the second direction. ### Claim 8 (depends on 7) The stabilization system of claim 7, wherein the at least two actuators comprise a second actuator configured to move the weight in the third direction and the fourth direction. ### Claim 9 (depends on 1) The stabilization system of claim 1, wherein the at least two actuators comprise at least one motor. ### Claim 10 (depends on 1) The stabilization system of claim 1, wherein the at least two actuators comprise a first plurality of actuators configured to rotate the rotatable platform in the first direction and the second direction. ### Claim 11 (depends on 10) The stabilization system of claim 10, wherein the at least two actuators comprise a second plurality actuators configured to move the weight in the third direction and the fourth direction. ### Claim 12 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor comprises at least one weight sensor. ### Claim 13 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor is configured to acquire measurement data relating to movement of the weight. ### Claim 14 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor comprises at least a first sensor and a second sensor, wherein the first sensor is configured to be positioned at a first angular position relative to the building, and wherein the second sensor is configured to be positioned at a second angular position relative to the building that is different from the first angular position. ### Claim 15 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor is configured to acquire measurement data relating to acceleration. ### Claim 16 (depends on 1) The stabilization system of claim 1, wherein the at least one sensor is configured to acquire measurement data relating to acceleration of the weight. ### Claim 17 A building, comprising: a floor structure; and a stabilization assembly configured coupled to the floor structure, the stabilization assembly including: a rotatable platform; a track coupled to the rotatable platform, the track defining a track path; a weight slidably coupled to the track; a tensile member engaging a drive wheel coupled to the weight; at least two actuators configured to rotate the rotatable platform in a first direction and a second direction, and move the weight along the track path in a third direction and a fourth direction; at least one sensor configured to acquire measurement data relating to a seismic event; and a controller configured to: determine a target response of the stabilization assembly that mitigates an effect of the seismic event on the building based on the measurement data, and control the at least two actuators to rotate the rotatable platform in at least one of the first direction or the second direction, and move the weight along the track path in at least one of the third direction or the fourth direction according to the target response. ### Claim 18 (depends on 17) The building of claim 17, wherein the first direction is clockwise and the second direction is counterclockwise, and wherein the third direction is opposite to the fourth direction. ### Claim 19 (depends on 17) The building of claim 17, wherein the at least two actuators comprise at least a first actuator configured to rotate the rotatable platform in the first direction and the second direction. ### Claim 20 (depends on 19) The building of claim 19, wherein the at least two actuators comprise at least a second actuator configured to move the weight in the third direction and the fourth direction.