# US 10,766,739 B2 · Assembly for actuating an elevator car brake > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,739 B2 - Document ID: US10766739B2 - Status: Granted - Kind: B2 - Application number: 15/545,192 - Filed: 2016-01-19 - Published: 2017-12-28 - Granted: 2020-09-08 - Earliest claimed: 2015-01-21 - Assignees: Otis Elevator Company - Applicants: Otis Elevator Company - Inventors: Richard N. Fargo; Xiaodong Luo; Enrico Manes - Web page: https://patentgrep.com/patent/US10766739B2 ## CPC - B66B 1/32: effective on braking devices {, e.g. acting on electrically controlled brakes (brake control H02P, lift brakes per se B66B5/02)} - B66B 5/0068: {by activating the safety brakes when the elevator car exceeds a certain upper or lower position in the elevator shaft} - B66B 5/16: Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well - B66B 9/00: Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) - B66B 9/003: {for lateral transfer of car or frame, e.g. between vertical hoistways or to/from a parking position} - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract An assembly 28 for actuating and controlling braking of a car of an elevator system is provided. The assembly includes at least one braking device 20 mounted on the car, supported between the car and a hoistway for movement with the car within the hoistway, and configured to apply a braking force to the car. The assembly also includes at least one corresponding actuator 34 supported by the hoistway and configured to selectively engage the braking device to prevent movement of the car. ## Claims ### Claim 1 An assembly for actuating and controlling braking of a car of an elevator system, the assembly comprising: at least one braking device mounted on the car, supported between the car and a hoistway for movement with the car within the hoistway, and configured to apply a braking force to the car, the car propelled using a linear motor system; and a series of actuators at spaced locations and supported by the hoistway, each actuator of the series of actuators configured to selectively engage the braking device to prevent movement of the car, each actuator of the series of actuators configured to engage the braking device in response to an overspeed condition of the car. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the braking device is mounted on a frame member of the car. ### Claim 3 (depends on 1) The assembly of claim 1, wherein the actuator is supported by a corresponding guiderail of the hoistway. ### Claim 4 (depends on 1) The assembly of claim 1, wherein each actuator of the series of actuators is configured to be retracted to allow the car to move past a location of the actuator in the hoistway and extended to interfere with the corresponding braking device to stop the car. ### Claim 5 (depends on 4) The assembly of claim 4, wherein each actuator of the series of actuators includes a spring biasing the actuator in the extended position and a coil to move the actuator into the retracted position. ### Claim 6 (depends on 1) The assembly of claim 1, wherein a controller is programmed to activate and control each actuator of the series of actuators to apply the braking force using the braking device. ### Claim 7 (depends on 1) The elevator system of claim 1, wherein a controller is programmed to activate and control each actuator of the series of actuators to apply the braking force using the braking device. ### Claim 8 An elevator system comprising: a hoistway; at least one car supported for vertical movement in a lane of the hoistway; a linear motor system configured to propel the car; and an assembly for actuating and controlling braking of the car, the assembly including: at least one braking device mounted on the car, supported between the car and the hoistway for movement with the car within the hoistway, and configured to apply a braking force to the car; and a series of actuators at spaced locations and supported by the hoistway, each actuator of the series of actuators configured to selectively engage the braking device to prevent movement of the car, each actuator of the series of actuators configured to engage the braking device in response to an overspeed condition of the car. ### Claim 9 (depends on 8) The elevator system of claim 8, wherein the braking device is mounted on a frame member of the car. ### Claim 10 (depends on 8) The elevator system of claim 8, wherein each actuator of the series of actuators is supported by a corresponding guiderail of the hoistway. ### Claim 11 (depends on 8) The elevator system of claim 8, wherein each actuator of the series of actuators is configured to be retracted to allow the car to move past a location of each actuator of the series of actuators in the hoistway and extended to interfere with the corresponding braking device to stop the car. ### Claim 12 (depends on 11) The assembly of claim 11, wherein each actuator of the series of actuators includes a spring biasing the actuator in the extended position and a coil to move the actuator into the retracted position. ### Claim 13 (depends on 8) The elevator system of claim 8, wherein a set of the series of actuators is retracted to create a safe zone of the hoistway through which the car can move.