By Means Responsive To An Unsafe Operating Characteristic Of The System Patents (Class 198/323)
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Patent number: 11661317Abstract: A side monitoring device for a passenger transport system is described. The device monitors a force application upon a base plate of the passenger transport system along a gap formed between a transport band of the passenger transport system and the base plate. The device includes a mounting structure, at least one elongate belt, and a force sensor. The mounting structure is configured for the installation of the device in a base plate region of the passenger transport system adjacent to a transport region. A belt is functionally connected to the mounting structure and extends parallel to at least a portion of the traveling path. The force sensor is functionally connected to the belt and configured for detecting a force exerted upon the mounting structure by the belt in a direction of displacement extending parallel to the traveling path.Type: GrantFiled: April 2, 2020Date of Patent: May 30, 2023Assignee: INVENTIO AGInventor: Csaba Boros
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Patent number: 11390488Abstract: A passenger conveyor diagnostic system includes a processor that stores at least one visual inspection diagnostic, and a passenger conveyor system including at least one sensor configured to capture one or both of an image and a sound. The processor applies the at least one visual inspection diagnostic to one or both of the image and the sound to generate a diagnosed status of the passenger conveyor system, and overlays the diagnosed status of the passenger conveyor system on the image.Type: GrantFiled: November 19, 2020Date of Patent: July 19, 2022Assignee: OTIS ELEVATOR COMPANYInventors: Pradeep Miriyala, Raushan Kumar, Rachit Sahgal
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Patent number: 11292669Abstract: When a conveyance abnormality occurs in a driving conveyor, runaway of a conveying member that supports a conveyance object is stopped. An endless conveyor is provided with a plurality of the conveying members spaced apart from each other, and an endless element is provided with a plurality of engaging members spaced apart from each other and engaged with the conveying members from the conveyance direction, in which the endless element receives a driving force with the engaging member from the conveyor via the conveying member to thereby travel. When the conveyance abnormality in which the conveying member travels autonomously is detected, the endless element is stopped by giving of a braking force, and the runaway of the conveying member is stopped by the engaging member.Type: GrantFiled: January 28, 2021Date of Patent: April 5, 2022Assignee: MAZDA MOTOR CORPORATIONInventor: Manabu Tashiro
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Patent number: 11214466Abstract: A monitoring system for a passenger conveyor including: at least one acceleration sensor provided on a movable component of the passenger conveyor, wherein the moveable component moves in a closed loop path (P) when the passenger conveyor is in use; a fault detection sensor associated with the or each acceleration sensor and configured to provide data indicative of a fault in the moveable component. The monitoring system includes a controller configured to: receive data from the or each acceleration sensor; monitor a gravity vector (V) of the or each acceleration sensor; determine a direction of travel of the or each acceleration sensor; determine a current location of the or each acceleration sensor based on the monitored gravity vector (V) and the determined direction of travel; detect a fault from the data received from the or each fault detection sensor; identify a location of the detected fault.Type: GrantFiled: November 19, 2020Date of Patent: January 4, 2022Assignee: OTIS ELEVATOR COMPANYInventors: Craig Drew Bogli, Tadeusz Pawel Witczak, Nikola Trcka, Philipp Schedl, Robert Takacs
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Patent number: 11192756Abstract: A handrail safety control device, a transportation system and a handrail safety control method. The handrail safety control device is provided for a transportation system having a handrail, the handrail including a body and a handrail belt, the handrail belt being driven under power to move relative to the body and forming an engaged state or a disengaged state with the body. The handrail safety control device includes: a contact portion disposed in a preset section of the handrail, the contact portion being in a first state or a second state respectively when the handrail belt in the preset section is in the engaged state or the disengaged state, wherein in the first state, the contact portion is in contact with the handrail belt, and in the second state, the contact portion is at least partially out of contact with the handrail belt; and a signal generation portion.Type: GrantFiled: November 13, 2020Date of Patent: December 7, 2021Assignee: OTIS ELEVATOR COMPANYInventors: Hai Cui, Qing Cheng, Yi Fang, Xingsong Xu, Xinxiang Jiang, JiaYing Chen, ShengJun Qian, HuaLiang Xu, ShaoDong Huang
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Patent number: 11169170Abstract: The present invention provides a speed detection device and a speed detection method for a handrail of a passenger conveyor, and belongs to the technical field of passenger conveyors. A distance from the speed detection device provided by the present invention to a surface of a detected handrail is centimeter-scale or below centimeter-scale, wherein the speed detection device comprises a light source part, an imaging sensor and an image processing part. The speed detection device and the speed detection method provided by the present invention can accurately detect to obtain speed information of the running handrail, and the speed detection device is easy to install and maintain.Type: GrantFiled: April 19, 2018Date of Patent: November 9, 2021Assignee: OTIS ELEVATOR COMPANYInventor: Honglin Liu
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Patent number: 11167953Abstract: A power supply circuit of a passenger conveyor converts includes an electrolytic capacitor and a control power supply device configured to supply an electric power to a charging circuit configured to charge the electrolytic capacitor. A storage battery is disposed between a converter and an inverter in parallel with the electrolytic capacitor. When an operation of the passenger conveyor is stopped in response to a key operation, the power supply to the control power supply device is shut off. When the operation of the passenger conveyor is resumed in response to a key operation, a DC electric power charged in the storage battery is supplied to the inverter, to thereby allow the passenger conveyor to resume the operation.Type: GrantFiled: June 9, 2017Date of Patent: November 9, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Atsushi Morigami
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Patent number: 11148909Abstract: Provided is a passenger-conveyor step-chain monitoring system capable of monitoring elongation of a step chain without adding a special device. The passenger-conveyor step-chain monitoring system includes a monitoring unit configured to monitor elongation of a step chain attached to a step of a passenger conveyor based on a result of detecting the step by a sensor provided to detect an absence of the step. With this configuration, it is possible to monitor elongation of the step chain without adding a special device.Type: GrantFiled: June 14, 2017Date of Patent: October 19, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Shingo Doi
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Patent number: 10988348Abstract: Disclosed is an escalator system that has: an escalator step; and load sensors secured to the escalator step, wherein the load sensors are configured to: sense an escalator loading; and transfer, to an escalator controller, sensor data indicative of the escalator loading.Type: GrantFiled: May 26, 2020Date of Patent: April 27, 2021Assignee: OTIS ELEVATOR COMPANYInventors: Walter Thomas Schmidt, Charles C. Coffin, Shihemn Chen, Enrico Manes, Paul R. Braunwart, Anais Espinal, Kishore K. Reddy, Soumalya Sarkar
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Patent number: 10954104Abstract: A people conveyor (1) comprises a band (12) of conveyance elements (13) connected to and driven by at least one drive chain (15, 27) comprising a plurality of chain links (34, 36). The people conveyor (1) further comprises at least one inductive sensor (40, 41) arranged laterally next to the at least one drive chain (15, 27) and configured for monitoring the chain links (34, 36) passing by the at least one inductive sensor (40, 41).Type: GrantFiled: May 14, 2019Date of Patent: March 23, 2021Assignee: OTIS ELEVATOR COMPANYInventor: Chan-Jong Park
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Patent number: 10954103Abstract: A people conveyor (2), which is configured for conveying passengers by at least one conveyance band (8) travelling along a closed loop, comprises at least one handrail element (6) which is configured for moving parallel to the at least one conveyance band (8) along a travel path forming a closed loop; and at least one force sensor (18a, 18b), which is configured for detecting a force (FS1, FS2) exerted by the at least one handrail element (6) in a direction transverse to the direction of movement of the at least one handrail element (6) and for providing a corresponding force signal.Type: GrantFiled: October 17, 2018Date of Patent: March 23, 2021Assignee: OTIS ELEVATOR COMPANYInventor: Chan-Jong Park
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Patent number: 10926978Abstract: Provided is a man conveyor apparatus (1), including: steps (17) connected in an endless manner; two or more drive motors (4a and 4b), each being configured to circulate the steps (17); a load detection device (10) configured to detect a load of the drive motors (4a and 4b); and a controller (11) configured to control an operation and stop of each of the drive motors (4a and 4b), wherein the controller (11) increases or decreases the number of the drive motors to be driven in accordance with a value of the load detected by the load detection device (10) and changes a drive motor to be driven as a main motor each time the number of drive motors to be driven is decreased.Type: GrantFiled: June 8, 2017Date of Patent: February 23, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Ippei Kimura
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Patent number: 10850948Abstract: An escalator system wherein when a handrail belt is moving from rotation of a plurality of elevator sheaves: a controller receives data from a plurality of sensors, identifies from the data a first sheave of the plurality of sheaves as comprising reference alignment value for the system, determines for the plurality of sheaves a respective plurality of alignment values, compares the plurality of alignment values with the reference alignment value, and provides a predetermined response when any of the plurality of alignment values diverges from the reference alignment value by more than a predetermined amount.Type: GrantFiled: August 29, 2019Date of Patent: December 1, 2020Assignee: OTIS ELEVATOR COMPANYInventors: Srinivasa Rao Ladi, Serralathan Sr
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Patent number: 10807809Abstract: An end plate for a conveyor system is described. In one embodiment, a conveyor system includes an endless conveyor belt turned about rollers between an entrance end and an exit end, and an end plate disposed at one end of the belt facing towards a direction of motion of the belt. The end plate includes a plate body including a plurality of projecting members extending from one end of the plate body. The end plate also includes a plurality of finger elements disposed over the plurality of projecting members. Each finger element of the plurality of finger elements includes a slot on a back side of the finger element that is configured to receive a projecting member of the plurality of projecting members. The plurality of projecting members and the plurality of finger elements are configured to face towards the belt.Type: GrantFiled: January 7, 2020Date of Patent: October 20, 2020Assignee: Honda Motor Co., Ltd.Inventors: Benjamin Douglas Deboer, Dwayne Switzer, Benjamin MacArthur
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Patent number: 10781079Abstract: The present invention relates to a safety device for an escalator, which can safely move a person or cart on a moving step of the escalator or a moving walkway toward a platform, the safety device comprising: a tilting member comprising a free end portion extended from a front end portion of a platform member, which covers an upper surface of a moving step getting thereunder in an end region of the escalator, toward an upper surface of an entering moving step, and a rotary end portion rotatably installed under the platform member; a contact roller installed in a region of the free end portion and rotatable being in contact with the moving step; and at least one guide roller rotatable being in contact with the contact roller and partially exposed through the upper surface.Type: GrantFiled: November 12, 2019Date of Patent: September 22, 2020Assignee: REPUBLIC OF KOREA (NATIONAL DISASTER MANAGEMENT RESEARCH INSTITUTE)Inventors: Dugkeun Park, Sujung Im
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Patent number: 10766747Abstract: Provided is an abnormality detection apparatus for a passenger conveyor, including: a first sensor arranged at an upper horizontal portion; a second sensor arranged at a lower horizontal portion; and a control device configured to receive respective outputs of the first sensor and the second sensor, wherein the first sensor and the second sensor are each configured to measure a distance to a side surface of each of steps along a traveling direction of each of steps, and wherein the control device is configured to detect abnormality of the passenger conveyor based on a change amount of each of measurement values given by the first sensor and the second sensor.Type: GrantFiled: July 19, 2017Date of Patent: September 8, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Kenji Ogura
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Patent number: 10689231Abstract: A belt safety device (2) for monitoring a drive belt (15), in particular a drive belt (15) of a people conveyor (1), comprises a sensor wheel (34) configured to be driven by the monitored drive belt (15); a sensor surface (42); an indicator element (40) extending eccentrically from the sensor wheel (34) and moving along the sensor surface (42) when the sensor wheel (34) rotates; and an evaluation unit (44), which is configured for determining the path (P) of the indicator element (40) moving along the sensor surface (42).Type: GrantFiled: May 15, 2019Date of Patent: June 23, 2020Assignee: OTIS ELEVATOR COMPANYInventor: Philipp Schedl
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Patent number: 10654656Abstract: A measuring device serves for acquiring measurement values for measuring a tension in a conveying system. The measuring device is designed to guide a conveying member from a first section of the measuring device to a second section of the measuring device, to effect a deflection of the conveying member with regard to a straight-lined connection between the first and the second section and to detect measurement values corresponding to a reaction force according to this deflection. The measuring device includes surfaces for guiding rollers of the conveying member. One of these surfaces is a deflecting surface for deflecting the conveying member. The deflecting surface is formed on a deflecting element of a measuring element, and the reaction force is a force which acts upon the measuring element.Type: GrantFiled: January 23, 2019Date of Patent: May 19, 2020Assignee: FERAG AGInventor: Carl Conrad Mäder
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Patent number: 10476169Abstract: Wireless communication is facilitated via communication assembly apparatuses. A system includes: a wireless gateway device located within a housing and having electrical connection elements for power and network connectivity; and an antenna coupled to the housing and electrically coupled to the wireless gateway device. The housing is adapted to be masked on a surface of a support structure exposed to a defined environment, and is configured to serve a first function and the support structure is configured to serve a second function. The first function is distinct from the second function. In various embodiments, the antenna can be a resonant slot antenna, a horn antenna, a dipole antenna, a patch antenna or a custom antenna element. The wireless gateway device can include circuitry that facilitates multiple-input and multiple-output communication of the antenna, and is configured to be powered via power over Ethernet in some embodiments.Type: GrantFiled: April 18, 2019Date of Patent: November 12, 2019Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Thomas Schleef, Craig Lee
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Patent number: 10427891Abstract: In one aspect, a transfer guard system is provided for transferring objects across a gap between conveying surfaces of a conveyor. The transfer guard system includes an elongate mounting member and at least one transfer guard member connected to the mounting member. The transfer guard system includes at least one mount having a receiver that receives the mounting member. The at least one mount includes a plurality of link members and at least one pivot connection between the link members. The at least one pivot connection permits the mounting member receiver to be pivoted along an arcuate path within the gap to position the receiver at a predetermined position in the gap. The at least one mount further includes at least one locking member operable to fix the link members relative to one another and secure the mounting member receiver at the predetermined position in the gap.Type: GrantFiled: June 27, 2018Date of Patent: October 1, 2019Assignee: Flexible Steel Lacing CompanyInventor: James P. McKee
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Patent number: 10399824Abstract: A passenger transportation system and a startup and shutdown control method thereof, wherein the passenger transportation system comprises: a plurality of series-connected passenger transportation devices; an electrical control system comprising a plurality of startup and shutdown circuits which are respectively used for controlling startup and shutdown of each of the passenger transportation devices; and an electrical interlocking assembly coupled between each of the startup and shutdown circuits, wherein the electrical interlocking assembly controls a startup and shutdown sequence of a low-position passenger transportation device and a high-position passenger transportation device by controlling closing and opening of each of the startup and shutdown circuits.Type: GrantFiled: January 10, 2018Date of Patent: September 3, 2019Assignee: OTIS ELEVATOR COMPANYInventors: JiYao Le, LongWen Wang
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Patent number: 10399823Abstract: A conveyor drive unit (1a; 1b), which is configured for driving a conveyor, comprises: a motor (14); an adaptive power supply unit (20), which is configured for supplying electrical energy to the motor (14); a safety chain/circuit (30), comprising at least one safety device (32, 34, 36) and being configured for ensuring a safe operation of the conveyor. The conveyor drive unit (1a; 1b) further comprises an initialization switch (28a; 28b), which is configured for selectively connecting the adaptive power supply unit (20) electrically with the motor (14) for initialization of the adaptive power supply unit (20) without bypassing or deactivating the safety chain/circuit (30).Type: GrantFiled: August 31, 2015Date of Patent: September 3, 2019Assignee: OTIS ELEVATOR COMPANYInventor: Reinhard Henkel
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Patent number: 10351392Abstract: Disclosed is a system including a conveyer, a sensor operationally directed to engage the conveyer, a controller for controlling the conveyer and the sensor, the controller renders a plurality of determinations including: a first determination that the conveyer is in an operational state, a second determination that first sensed data dynamically obtained from the sensor is indicative of a first passenger on the conveyer, a third determination to model shape of the first passenger, while the first passenger is on the conveyer, with a first nodal model, a fourth determination to track displacement differentials for the first nodal model, a fifth determination to identify from the differentials an occurrence of an alert condition with the first passenger, at an occurrence of an alert condition, a sixth determination to stop the conveyer, and the controller transmits first instructions to the conveyer to effect the sixth determination.Type: GrantFiled: October 23, 2018Date of Patent: July 16, 2019Assignee: OTIS ELEVATOR COMPANYInventor: Mark R. Gurvich
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Patent number: 10336582Abstract: The application relates to passenger transport systems and related methods. The passenger transport system has multiple step units, a comb plate, a monitoring device, and a marking device. The step units are to be moved one behind the other continuously along a predefined movement path during normal operation. The comb plate is arranged at a fixed position relative to the predefined movement path. The monitoring device is configured to monitor an actual position of a currently monitored step unit relative to the predefined movement path and to detect a deviation of the actual position from the predefined movement path by more than an allowable tolerance value and activate the marking device in response thereto. Upon being activated, the marking device is configured to mark the currently monitored step unit and/or a step unit spatially correlating to the currently monitored step unit.Type: GrantFiled: June 21, 2017Date of Patent: July 2, 2019Assignee: Inventio AGInventors: Manfred Gartner, Thomas Novacek
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Patent number: 10280045Abstract: A human transport device such as an escalator or a moving walkway may include tread elements connected into an endless transport belt, a drive unit for driving the transport belt, and a monitoring apparatus for detecting a faulty arrangement of at least one of the tread elements in the transport belt. The tread elements of the driven transport belt may pass through a transport region and a return region between a first return station and a second return station. The monitoring apparatus may have a detection means and a triggering unit. The detection means may be arranged in a direction of a longitudinal extension of the human transport device below the tread elements of the transport region between the first and second return stations. The detection means may be connected to the triggering unit, and the triggering unit may actuate upon mechanical influence on the detection means.Type: GrantFiled: August 2, 2016Date of Patent: May 7, 2019Assignees: THYSSENKRUPP ELEVATOR AG, THYSSENKRUPP AGInventors: Irfan Akyurt, Christopher Busemann, Aurelio Castaño Lantero
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Patent number: 10239732Abstract: A conveyor device includes a truss; a conveyance element, which is movable with respect to the truss in a longitudinal direction and which includes at least one groove extending along said longitudinal direction. The conveyor device further includes a comb plate having at least one tooth extending into the at least one groove. For minimizing the effects resulting from a comb crash, the conveyor device further includes at least one compensation device fixing the comb plate in the longitudinal direction during normal operation, but allowing the comb plate to move in the longitudinal direction in case of a comb crash.Type: GrantFiled: August 26, 2015Date of Patent: March 26, 2019Assignee: OTIS ELEVATOR COMPANYInventor: Chan-Jong Park
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Patent number: 10221046Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.Type: GrantFiled: May 10, 2018Date of Patent: March 5, 2019Assignee: OTIS ELEVATOR COMPANYInventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
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Patent number: 10214391Abstract: The present invention provides a handrail entry monitoring system of a passenger conveyor and a monitoring method thereof, and belongs to the field of passenger conveyor technologies. In the handrail entry monitoring system and the monitoring method of the present invention, at least part of a handrail entry region of the passenger conveyor is sensed by using an imaging sensor and/or a depth sensing sensor, to acquire a data frame, and the data frame is analyzed to monitor whether a handrail entry of the operating passenger conveyor is in a normal state or an abnormal state. The monitoring system of the present invention and the monitoring method thereof can timely and effectively detect a danger that a foreign matter is about to be entrapped into the handrail entry, helping prevent foreign matters from being entrapped into the handrail entry, thereby improving safety of the passenger conveyor.Type: GrantFiled: July 28, 2017Date of Patent: February 26, 2019Assignee: OTIS ELEVATOR COMPANYInventors: LongWen Wang, ZhaoXia Hu, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn, Gero Gschwendtner
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Patent number: 10207901Abstract: The invention relates to a handrail system of a people mover, the handrail system comprising a circulating handrail and a safety system of a handrail inlet in a handrail housing. The safety system comprises a hatch provided around the handrail inlet in the handrail housing; and trigger means operationally connected between the hatch and the handrail housing to launch the hatch from a first position inwards into the handrail housing to a second position in response to a detection of an object touching the hatch or arriving to a safety area in front of the hatch. The handrail system further comprises a coupling for operatively connecting the circulating handrail and the safety system, the coupling being arranged to stop the handrail in response to the launch of the hatch inwards into the handrail housing or in response to a detection of an object by a sensor which the object is arriving to the safety area in front of the hatch.Type: GrantFiled: August 31, 2017Date of Patent: February 19, 2019Assignee: Kone CorporationInventors: Jouni Salojarvi, Visa Rauta
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Patent number: 10173864Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.Type: GrantFiled: July 28, 2017Date of Patent: January 8, 2019Assignee: OTIS ELEVATOR COMPANYInventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
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Patent number: 10053337Abstract: A people conveyor comprises two landing areas located at two opposing ends of the people conveyor; a movable conveying element extending between the two landing areas and configured for conveying passengers between the two landing areas; a handrail extending parallel to the conveying element between the two landing areas and configured for moving with the conveying element; a handrail exit/entry portion located at one of the landing areas and configured for receiving a return portion of the handrail; and a safety switch assembly provided at the handrail exit/entry portion and configured for stopping the handrail when activated. The safety switch assembly comprises at least one sensor surface providing a touch sensor for detecting any part of a human body, in particular a finger, approaching and/or touching at least one of the at least one sensor surfaces.Type: GrantFiled: October 12, 2017Date of Patent: August 21, 2018Assignee: OTIS ELEVATOR COMPANYInventors: Alexander Turek, Alois Senger
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Patent number: 10046952Abstract: A moving handrail monitoring system includes a sensor configured to sense at least part of a moving handrail of the passenger conveying device to acquire a data frame; a processing device configured to analyze and process the data frame to monitor whether a tension degree of the moving handrail is in a normal state, wherein the processing device is configured to include: a target object recognition module configured to recognize, based on a sensed movement and/or position and/or color and/or shape, a moving handrail portion that serves as a target object from the data frame; an object feature extraction module configured to extract a tension degree feature of the moving handrail portion; and a judgment module configured to compare the extracted tension degree feature with a system preset interval, and judge whether a current tension degree of the moving handrail is normal.Type: GrantFiled: July 28, 2017Date of Patent: August 14, 2018Assignee: OTIS ELEVATOR COMPANYInventors: ZhaoXia Hu, Wilfrid Fuchs, Alois Senger, Hui Fang, Zhen Jia, Jianwei Zhao, Qiang Li, Anna Su, Alan Matthew Finn
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Patent number: 9884749Abstract: A sensor assembly for a passenger conveying device, a safety system and the passenger conveying device, wherein the sensor assembly comprises an optical fiber disposed along a length of a skirt board of the passenger conveying device; a light source disposed at a first end of the optical fiber, light being incident into the optical fiber; and an optical receiver disposed at the first end of the optical fiber, the optical receiver receiving backwards scattered light from the optical fiber and being capable of sensing a signal indication of the backwards scattered light, wherein the optical fiber is associated with a sensing element such that the sensing element causes deformation of the optical fiber when the sensing element is subjected to pressure, and the optical receiver is capable of sensing a change in the signal indication of the backward scattered light caused by the deformation of the optical fiber.Type: GrantFiled: July 26, 2017Date of Patent: February 6, 2018Assignee: OTIS ELEVATOR COMPANYInventors: LingHao Tian, Qiang Li, XuLei Guo, Jianwei Zhao, ZhaoXia Hu, Alan Matthew Finn
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Patent number: 9850101Abstract: The present invention relates to a safe operation-stop method for an escalator for safely operating and stopping an escalator that senses an abnormal speed of the escalator so as to prevent passengers from falling. A safe operation-stop method for an escalator is provided, the method including sensing an abnormal speed of the escalator and stopping the escalator before it is reversely rotated, and being capable of reliable braking when an abnormal speed of the escalator occurs, thereby preventing passengers from falling by adjusting the inertial stopping distance when braking.Type: GrantFiled: June 5, 2015Date of Patent: December 26, 2017Assignee: MIJUHITEC CO., LTDInventor: Ho Yeon Lee
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Patent number: 9809426Abstract: The present invention relates to a low-speed brake apparatus for an escalator, comprising: a brake sprocket mounted on a drive shaft for a step; a driven sprocket connected to the brake sprocket through a brake chain to operate in conjunction with the brake sprocket; an electronic clutch that controls a connection between the driven sprocket and a transmission gear; a brake motor of which the central shaft is rotated by the transmission gear; a plurality of switching means connected to a plurality of winding wires that are stators of the brake motor; and a controller for supplying an operating pulse to a selected switching means. Therefore, when there is an abnormality in an escalator, it is possible to stop a step at a low speed according to an operating pulse supplied by the controller, thereby stably stopping riders standing on the step and thus protecting the riders.Type: GrantFiled: June 5, 2015Date of Patent: November 7, 2017Assignee: Mijuhitec Co., LTD.Inventor: Ho Yeon Lee
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Patent number: 9789355Abstract: A portable escalator includes a frame, a stair caterpillar, a driving device and a braking device. The driving device includes a motor, a chain-sprocket unit and a belt-pulley unit. The motor includes a mandrel and is connected to the frame. The chain-sprocket unit is connected to the stair caterpillar. The belt-pulley unit includes two pulleys and a belt. The first pulley is connected to the mandrel. The second pulley is connected to the chain-sprocket unit. The belt is provided on the first and second pulleys so that the motor is operable to drive the stair caterpillar through the belt-pulley unit and the chain-sprocket unit. The braking device is connected to the mandrel so that the braking device is operable to stop the mandrel.Type: GrantFiled: August 26, 2016Date of Patent: October 17, 2017Assignee: DK CITY CORPORATIONInventor: Chiu Hsiang Lo
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Patent number: 9792796Abstract: Where a safety requirement mandates contact with a grippable structural element such as a handle, a handrail, a handlebar or a steering wheel, compliance with the requirement may be determined using one or more manually activated RFID tags provided in designated locations on the grippable structural element. A level of compliance with the requirement during a given activity may be determined based at least in part on the number of RFID signals received from the manually activated RFID tags, which may be compared to a number of workers engaged in the given activity. Based on the level of compliance, relevant feedback in the form of electronic messages, signals or sounds may be identified and provided to one or more of the workers.Type: GrantFiled: June 25, 2014Date of Patent: October 17, 2017Assignee: Amazon Technologies, Inc.Inventors: Wesley Scott Lauka, Fransisca Vina Zerlina, Jamie Maria Holland
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Patent number: 9731904Abstract: The invention relates to an electronic safety device and a conveyor system comprising the same. The electronic safety device has a safety input for receiving a safety signal, the electronic safety device being configured to terminate its operation responsive to absence of the safety signal in the safety input. The electronic safety device comprises an operation-preventing circuit configured to detect an operational anomaly in the safety input, the operation-preventing circuit comprising a switch adapted to short the safety input when the operational anomaly is present in the safety input.Type: GrantFiled: December 7, 2015Date of Patent: August 15, 2017Assignee: Kone CorporationInventor: Pasi Raassina
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Patent number: 9695016Abstract: A method of checking the functional capability of at least one safety element of a safety circuit of an elevator installation utilizes a first processing unit and a second processing unit for the at least one safety element. The at least one safety element is connected with a control unit by a communications network. At least one signal is provided by the first processing unit on the basis of at least one communication from the control unit. The at least one provided signal is detected by the second processing unit connected with the first processing unit and is communicated to the control unit by way of the communications network. The at least one communicated signal is checked for the validity thereof by the control unit.Type: GrantFiled: August 8, 2012Date of Patent: July 4, 2017Assignee: Inventio AGInventors: Astrid Sonnenmoser, Martin Hess, David Michel
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Patent number: 9630808Abstract: A missing footstep detection device for a passenger conveyor is installed in a passenger conveyor including a rail formed so as to have a linear portion and a curved portion, installed in a building, footsteps endlessly coupled at a regular interval, guided by the rail, and a roller mounted to each of the footsteps to roll in contact with the rail.Type: GrantFiled: January 6, 2014Date of Patent: April 25, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Toshiyuki Fukutani
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Patent number: 9624041Abstract: A conveying device with a revolvingly led, extensively extended conveying element, which forms a conveying section with a conveying surface, and a return section, which is arranged below the conveying section. The conveying element is deflected in each case in two head-end regions, which are spaced from one another along the conveying direction. A wiper device for wiping foreign objects led along on the conveying surface of the conveying element is arranged in the front head-end region, in which the conveying element is deflected from the conveying section into the return section. The wiper device includes a wiper unit with a receiving blade, which runs transversely to the conveying direction, as well as a wiper blade, which is mounted on the wiper unit and forms a flexible wiper lip projecting toward the conveying element beyond the receiving blade.Type: GrantFiled: September 24, 2015Date of Patent: April 18, 2017Assignee: WRH WALTER REIST HOLDING AGInventors: René Moor, Michael Fischer
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Patent number: 9475676Abstract: In an escalator or moving walkway one comb plate, which mounts comb segments on which teeth which mesh with grooves in escalator steps or moving walkway panels are configured, is in each case provided at the entry and exit. On the comb segments, a safety installation having a predetermined size extends transversely to the running direction of the escalator or the moving walkway. The safety installation is mounted at the transition between the comb plate and the comb segments, and movements of the comb plate and/or of the comb segments are detectable via the safety installation.Type: GrantFiled: July 24, 2013Date of Patent: October 25, 2016Assignee: THYSSENKRUPP FAHRTREPPEN GMBHInventors: Ronny Ischganeit, Christopher Busemann, Thaddäus Wozniak
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Patent number: 9302887Abstract: A method and an apparatus for monitoring a passenger transport installation, in fact the entraining elements which establish a connection of a plate link chain to a step or pallet of the passenger transport installation. There is provided on the entraining element side a triggering element which, when a specifiable movement of the entraining element is detected or when at least one safety element is missing, triggers an alarm state and optionally halts the drive of the passenger transport installation.Type: GrantFiled: December 23, 2014Date of Patent: April 5, 2016Assignee: KONE CORPORATIONInventors: Heinrich Zeiger, Winfried Lanzki
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Patent number: 9126810Abstract: Passenger conveyors with auxiliary brake systems are disclosed. The passenger conveyors include a truss that rotatably supports a loop sprocket at one end and a turnaround at an opposite end with an endless loop extending around the loop sprocket and the turnaround. The loop includes a plurality of rollers linked together. The truss is also coupled to a brake bar that has a braking surface, a downstream end and an upstream end. The brake bar is suspended above and biased towards the loop sprocket with the downstream end of the brake bar disposed a greater distance from the loop than the upstream end of the brake bar. A friction bar, which includes a first side that mateably engages the loop when placed onto the loop, is also provided that includes a top. The friction bar is suspended above the loop by an actuator, which is linked to a controller.Type: GrantFiled: January 30, 2012Date of Patent: September 8, 2015Assignee: Otis Elevator CompanyInventor: Gero Gschwendtner
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Publication number: 20150107958Abstract: A method and an apparatus for monitoring a passenger transport installation, in fact the entraining elements which establish a connection of a plate link chain to a step or pallet of the passenger transport installation. There is provided on the entraining element side a triggering element which, when a specifiable movement of the entraining element is detected or when at least one safety element is missing, triggers an alarm state and optionally halts the drive of the passenger transport installation.Type: ApplicationFiled: December 23, 2014Publication date: April 23, 2015Applicant: KONE CORPORATIONInventors: Heinrich ZEIGER, Winfried LANZKI
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Patent number: 8997968Abstract: A device and method for automatically adjusting safety control parameters of a conveyor are disclosed. The safety device may include various sensors and a safety control module. The safety control module may be preprogrammed with a learn-run method configured to learn operational and mechanical characteristics of a conveyor, validate the operational characteristics of the conveyor based on predefined nominal specifications, and determine a safety function with calibrated safety control parameters by which to monitor conveyor operation.Type: GrantFiled: April 20, 2009Date of Patent: April 7, 2015Assignee: Otis Elevator CompanyInventors: Burkhard Braasch, Peter Herkel, Ruediger Loeb, Ingo Engelhard, Michael Wilke
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Patent number: 8973731Abstract: An exemplary device for controlling power associated with a passenger conveyor motor includes a regenerative drive that is configured to facilitate providing electricity generated by the motor to a power source when the passenger conveyor is moving. The controller determines when an operating condition of the regenerative drive is outside of a desired range and responsively prevents the regenerative drive from facilitating providing the electricity to the power source.Type: GrantFiled: December 17, 2010Date of Patent: March 10, 2015Assignee: Otis Elevator CompanyInventor: GuangHua Ma
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Patent number: 8960407Abstract: A device and method for detecting a misaligned or missing step of a conveyor are disclosed. The missing step detector includes various sensors for detecting the drive speed of the conveyor and for detecting the presence of pallets or steps. The sensor output signals are correlated to determine fixed values characteristic of the specific conveyor in question. Using the fixed values as reference, the missing step detector is able to effectively monitor the conveyor for misaligned or missing steps independent of conveyor speed and time.Type: GrantFiled: April 20, 2009Date of Patent: February 24, 2015Assignee: Otis Elevator CompanyInventors: Burkhard Braasch, Ingo Engelhard, Dirk H. Tegtmeier, Peter Herkel, Ralph S. Stripling, Frank Kirchhoff
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Patent number: 8839942Abstract: A method and device for monitoring the functioning of a drive element provided between a drive motor and a pulling member for pallets or steps of a passenger transport installation is provided. The condition of the steps or pallets of the step or pallet belt may be monitored. The drive element may be monitored. The step or pallet belt may be stopped in the event of a malfunction of the drive element.Type: GrantFiled: February 15, 2013Date of Patent: September 23, 2014Assignee: Kone CorporationInventors: Andreas Tautz, Rolf Carsten, Christian Maletzki
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Patent number: 8770374Abstract: A braking system for escalators and moving walkways, includes a braking device (3) with a main brake (30) of the type which is released when there is no voltage in its electric activator, and an auxiliary brake (31) of the type which is closed when there is no voltage in its electric activator. A controller (1) controls the braking device (3), prepared for obtaining the load of the escalator or moving walkway, and calculates the braking torque required for each braking device (3) depending on the load and activating the braking device (3) for obtaining the corresponding torque while braking when a braking command is received. The auxiliary brake is activated (32) for taking the escalators or moving walkway to a safe position when there is a system failure.Type: GrantFiled: December 12, 2012Date of Patent: July 8, 2014Assignee: Thyssenkrupp Elevator Innovation Center, S.A.Inventors: Miguel Angel Gonzalez Alemany, Alberto Florez Castro, Jose Ojeda Arenas, Eva Rodriguez Rodriguez, Eduardo Moran Garcia, Jose Mendiolagoitia Juliana