Patents Assigned to Otis Elevator Company
  • Patent number: 12703604
    Abstract: A detection device and a detection method for an elevator display module, an elevator including the detection device, and a computer storage medium. The detection device includes: memory; a processor; an I/O interface, configured to be coupled with one or more electroluminescent devices of the elevator display module; a communication module; and a computer program stored on the memory and running on the processor, the running of the computer program causes: receiving a detection request signal for the elevator display module via the communication module; in response to the detection request signal, applying a detection signal on at least one of the electroluminescent devices via the I/O interface; obtaining an operating level associated with the detected electroluminescent device via the I/O interface; and determining whether the detected electroluminescent device is working normally according to a polarity of the operating level.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: August 11, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Bichun Li, Fu Qi, Shenhong Wang
  • Patent number: 12703609
    Abstract: An automatic conveyor device includes an entrance platform and an exit platform opposite to each other, and a series of steps running in a loop between the entrance platform and the exit platform; a platform footboard at the entrance platform or exit platform; a comb support plate connected to the platform footboard and slidable along guide rails of the platform footboard along a length direction; and one or more comb plates fixedly mounted onto the comb support plate.
    Type: Grant
    Filed: August 13, 2024
    Date of Patent: August 11, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Xiren Hu, De Wu
  • Patent number: 12703606
    Abstract: A safety control device (1) for a people conveyor (101) includes a first safety control channel (2) configured to output a first safety control signal in response to one or more input signals (10, 12, 14). A second safety control channel (4) is configured to output a second safety control signal in response to one or more input signals (10, 12, 14). An override control channel (6) is configured to monitor a health of the first and second safety control channels (2, 4) and determine whether a fault has occurred in either of the first or second safety control channels (2, 4). The override control channel (6) is configured to override the first or second safety control signal in response to a determination that a fault has occurred in the corresponding safety control channel (2, 4). The override prevents activation of one or more safety systems.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: August 11, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Peter Herkel
  • Patent number: 12703605
    Abstract: A self-checking device and method for an elevator braking device and an elevator system. The self-checking device includes an inductance testing module configured to measure an electromagnetic brake coil inductance L of the braking device; and a processing module electrically connected to the inductance testing module, and storing a mathematical model of an air gap a between the movable plate and the static plate with respect to the brake coil inductance L in a brake state; the processing module is configured to execute a checking mode in the brake state of the braking device, and in the checking mode, the processing module receives a current inductance L0 measured by the inductance testing module, calculates a current air gap a0 based on the mathematical model stored, and determines a wear degree of the friction lining based on the current air gap a0 calculated.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: August 11, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Guosong Li
  • Patent number: 12703608
    Abstract: An automatic conveyor device including an entrance platform footboard, an exit platform footboard, and a series of steps running in a loop between the entrance platform footboard and the exit platform footboard; a first comb plate and a second comb plate respectively connected to the entrance platform footboard and the exit platform footboard through a comb support plate; and a first warning device disposed in the vicinity of the entrance platform footboard or the exit platform footboard, where the first warning device includes a projection device that projects a light beam along a width direction in the vicinity of the first comb plate or the second comb plate.
    Type: Grant
    Filed: August 13, 2024
    Date of Patent: August 11, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Wei Wang, Ran Li, Cesar Augusto Belchior de Carvalho, Jun Ma, Baoyu Wang, YiSug Kwon, Zhaoxia Hu, Jing Xia
  • Patent number: 12698185
    Abstract: A method of resetting a safety actuator (52) in an elevator system. An elevator controller receives a signal to reset the safety actuator (52) and moves the elevator car upwards relative to the guide rail (106a) so as to release the safety brake (48). A safety board controller is instructed to operate an electromagnet (62) in the safety actuator (52) to pull a magnetic actuator pad (54?) laterally away from the guide rail (106a) to a reset position while the elevator car is moving upwards during the reset operation.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: August 4, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Jan Ruhnke
  • Patent number: 12692125
    Abstract: A system for detecting a presence of a person in a hoistway, having: one or more controllers configured to authenticate the person in the hoistway; the one or more controllers being operationally connected to an elevator car in the hoistway and configured to determine whether the person is within a predetermined distance of the elevator car from a signal emitter on the person; wherein when the person is within the predetermined distance of the elevator car, the one or more controllers is configured to transmit a feedback request to the person and stop the elevator car unless the one or more controllers receives feedback to the feedback request within a predetermined period of time.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: July 28, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Jayapal Reddy Gireddy, Helge Krambeck, Xinjin Zheng, Yuzhen Xue, Koji Kiyomoto, Arnaud Blanchard, Daigoro Kurokawa, Kazuya Yamamura, Hideki Arai, Terumitsu Saito, Hideaki Sasaki, Takashi Tanaka, Naoto Furuichi
  • Patent number: 12692127
    Abstract: A belt for suspending and/or driving an elevator car includes a plurality of tension elements extending longitudinally along a length of the belt, at least one tension element of the plurality of tension elements having one or more tension element coating layers applied thereto. A plurality of fibers are interlaced with the plurality of tension elements forming a composite belt structure. A belt coating at least partially encapsulates the composite belt structure. A method of forming a belt for suspending and/or driving an elevator car includes forming a plurality of tension elements and applying one or more coating layers to at least one tension element of the plurality of tension elements. A plurality of fibers are interlaced with the plurality of tension elements to form a composite belt structure. A belt coating is applied to the composite belt structure to at least partially encapsulate the composite belt structure.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: July 28, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Scott Alan Eastman, Daniel A. Mosher, Wenping Zhao, John P. Wesson, Brad Guilani
  • Patent number: 12692129
    Abstract: An elevator system is provided which includes a plurality of hoistway doors, a corresponding plurality of sets of non-contact switches, each set arranged to detect when a respective hoistway door is open, and a monitoring device. Each set of non-contact switches comprises a first non-contact switch arranged to open when the respective hoistway door is open and a second non-contact switch arranged to open when the respective hoistway door is open. The first non-contact switches of the plurality of sets are connected in series to form a first electrical path and the second non-contact switches of the plurality of sets are connected in series to form a second electrical path. The monitoring device is arranged to measure an electrical property of the first electrical path and an electrical property of the second electrical path to detect when a hoistway door is open.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: July 28, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Peter Herkel
  • Patent number: 12692124
    Abstract: An elevator car assembly (100). The elevator car assembly (100) includes: an elevator car operating panel (106) including a user interface (124) on a front surface (108) and a first connector portion (112) on a rear surface (110); and an elevator cab (102) including a plurality of elevator cab walls (104) including at least one elevator cab wall (104) for mounting the elevator car operating panel (106) thereon, the at least one elevator cab wall (104) including a second connector portion (114). The first connector portion (112) is configured to form a releasable electrical connection with the second connector portion (114).
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: July 28, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Aurelien Fauconnet, Vincent Lopez, Bi Xiong, Fabrice Boniface, Thibault Anquez
  • Patent number: 12686596
    Abstract: Elevator cars include a front wall panel with a car door in an opening. A storage cavity is defined within a portion of one of the front wall panel and the car door and is located behind a cab facing surface thereof. The storage cavity is defined by the cab facing surface and a side surface that defines a part of the opening when the car door is in an open state. An emergency ladder assembly is configured to be removably installed into the storage cavity. A storage opening is defined on the side surface and the emergency ladder assembly includes a cover plate configured to be removably attached to the side surface and cover the storage opening and an emergency ladder removably stored on the cover plate, with the emergency ladder being housed within the storage cavity in a stowed state.
    Type: Grant
    Filed: October 2, 2024
    Date of Patent: July 21, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Jihwan Choi
  • Patent number: 12686589
    Abstract: A method for providing elevator services includes: generating a dispatch command for stopping an elevator to a departure floor of a target device with self-propelled capability in response to an elevator reservation message from a computer system, wherein the elevator reservation message includes an identification of the target device and an identification of the departure floor; instructing the computer system to send a confirmation message to the target device, the confirmation message includes a password associated with the target device; after the elevator stops at the departure floor of the device and before starting the elevator, determining whether a state of the car satisfies set conditions, wherein the set conditions at least include: an identity authentication of the device in the car based on the password has passed; and if the set conditions are satisfied, the elevator is started; otherwise, the elevator is prohibited from starting.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: July 21, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventor: Xingang Gou
  • Patent number: 12679700
    Abstract: A passenger conveyor system and an anti-collision device for step and comb plate. The passenger conveyor system includes a step chain having a plurality of steps, a comb plate and an anti-collision device, the anti-collision device includes an actuating mechanism connected to the comb plate and configured to, when a moving distance of a step adjacent to comb teeth of the comb plate to be engaged in a vertical upward direction of the passenger conveyor system exceeds a preset value, actuate the comb plate to be lifted up from an initial first position to a second position to avoid collision with the step; and a reset mechanism configured to return the comb plate from the second position to the first position after the step travels through the comb plate.
    Type: Grant
    Filed: August 2, 2024
    Date of Patent: July 14, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Baoyu Wang, Kaisheng Xu, De Wu
  • Patent number: 12679698
    Abstract: A method and device for detecting an elevator safety chain and a computer-readable storage medium for implementing the method. A device for detecting an elevator safety chain, includes: an interface unit coupled with the elevator safety chain and configured to output an operating signal having a first level when the elevator safety chain is in an ON state and an operating signal having a second level when the elevator safety chain is in an OFF state; and a processing unit, including: memory; a microcontroller coupled with the interface unit; and a computer program stored on the memory and running on the microcontroller, the running of the computer program causes: evaluating reliability of the elevator safety chain based on time domain characteristic of the operating signal output by the interface unit.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: July 14, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Fu Qi, Bichun Li, Shenhong Wang
  • Patent number: 12668456
    Abstract: A method for indicating a service status of an elevator, an elevator call-out device, and a computer-readable storage medium. Elevator call-out device includes a call-out button for inputting a request to cause an elevator car to move relative to a landing station where the elevator call-out device is located; a visual sign associated with a direction of movement of the elevator car indicated by the call-out button; a control unit configured to: switch the corresponding visual sign from an off state to a normally lit state upon receiving the request to cause the elevator car to move relative to the landing station where the elevator call-out device is located; switch the visual sign corresponding to the direction of movement of the elevator car after stopping to a flashing state in response to an event that the elevator car stops at the landing station where the elevator call-out device is located.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: June 30, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Zhe Li, Sisi Zheng
  • Patent number: 12668453
    Abstract: An elevator system (201) includes an elevator car (203), a controller (215), a position reference system (234; 213) configured to provide a position of the elevator car (203) and at least one safety device (230) configured to indicate a potential hazard within the elevator system (201). When the actual position of the elevator car (203) cannot be determined using the position reference system (234), the controller (215) is configured to calculate at least one potential position of the elevator car (203) based on an assumed motion profile (237). The controller is configured to allow the elevator car (203) to move whilst no safety device (230), which corresponds to the at least one potential position of elevator car (203) is triggered and to stop movement of the elevator car (203) when a safety device (230) which corresponds to the at least one potential position of the elevator car is triggered.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: June 30, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Jan Ruhnke, Felix Benjamin Donath
  • Patent number: 12662353
    Abstract: An illustrative example embodiment of a device includes an elevator passenger interface configured to allow a passenger to place a call for elevator service by indicating at least one of an intended destination and an intended direction. The elevator passenger interface includes at least one sound detector. A processor is configured to determine a number of passengers intending to travel to the intended destination or in the intended direction based on at least an indication from the sound detector regarding voice detection and to associate the determined number of passengers with the call.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: June 23, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Harrison Daniels, Arthur Hsu, Stephen Richard Nichols
  • Patent number: 12662350
    Abstract: An illustrative example embodiment of an elevator passenger interface configuration device includes a configuration input that allows an authorized individual to input an indication of a desired functionality of at least one selected elevator passenger interface that is configured to receive audible passenger input. A processor determines at least one operation executable by the elevator passenger interface to provide the desired functionality based on the indication of the desired functionality. Memory associated with the processor at least temporarily stores information regarding the operation. A configuration output is configured to communicate information regarding the operation from the memory to the elevator passenger interface.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: June 23, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Harrison Daniels, Stephen Richard Nichols, Marija Trcka
  • Patent number: 12654994
    Abstract: A method includes determining a load value of a system; and determining a current operating mode of a three-phase motor in the following manner: if the load value is below a first threshold, determining a variable frequency mode as the current operating mode, if the load value is between the first threshold and a second threshold, determining a first operating frequency mode as the current operating mode, and if the load value exceeds the second threshold, determining a second operating frequency mode as the current operating mode, the second threshold is greater than the first threshold, the windings of the three-phase motor are wired in a star wiring method and in a triangular wiring method in the first and second operating frequency modes, respectively.
    Type: Grant
    Filed: November 15, 2023
    Date of Patent: June 16, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Wentong Liu, Lifei Cheng, Zhaoxia Hu, Kaisheng Xu
  • Patent number: D1140095
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: August 4, 2026
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Zhe Li, Sisi Zheng