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公开(公告)号：US20250091836A1
公开(公告)日：2025-03-20
申请号：US18468383
申请日：2023-09-15
Applicant: OTIS ELEVATOR COMPANY
Inventor： Yingxin Gao , Paul Stranieri , Dennis Manning , Antonio Martins , James Chmiel , Leslie Watterson
Abstract: An elevator system having a hoistway having a bottom landing with landing doors. An elevator car is in the hoistway, and a safety chain is coupled to the car and is in an open-state to stop the car and otherwise in an intact-state. A first sensor wirelessly transmits a first signal when the car is at the bottom landing, and a second sensor transmits a second signal when the doors are open. The system includes a control circuit including a first control element that receives the first signal indicating the car is at the bottom landing and a second control element that receives the second signal indicating the landing doors are open, and the control circuit changes state upon receipt of the signals, and the safety chain transitions to the open-state from the intact state when the control circuit changes state.
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公开(公告)号：US11858781B2
公开(公告)日：2024-01-02
申请号：US17856463
申请日：2022-07-01
Applicant: Otis Elevator Company
Inventor： Yu Pu , Yingxin Gao , Ruben Marante-Chasco
Abstract: A frictionless electronic safety actuator (100) for use in an elevator system, which includes at least one electromagnet (110), and a magnetic plate (120) attached to a connection arrangement (190). The connection arrangement (190) is configured to connect the magnetic plate (120; 220) to a linkage (80) that is actuatable so as to move a safety brake (24) into frictional engagement with an elevator guide rail (20). The at least one electromagnet (110) is operable to selectively produce a magnetic force which acts upon the magnetic plate (120) to displace the magnetic plate (120) and thereby move the connection arrangement (190) to actuate the linkage (80) without the magnetic plate (120) coming into frictional engagement with the elevator guide rail (20).
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公开(公告)号：US20230139867A1
公开(公告)日：2023-05-04
申请号：US17856463
申请日：2022-07-01
Applicant: Otis Elevator Company
Inventor： Yu Pu , Yingxin Gao , Ruben Marante-Chasco
Abstract: A frictionless electronic safety actuator (100) for use in an elevator system, which includes at least one electromagnet (110), and a magnetic plate (120) attached to a connection arrangement (190). The connection arrangement (190) is configured to connect the magnetic plate (120; 220) to a linkage (80) that is actuatable so as to move a safety brake (24) into frictional engagement with an elevator guide rail (20). The at least one electromagnet (110) is operable to selectively produce a magnetic force which acts upon the magnetic plate (120) to displace the magnetic plate (120) and thereby move the connection arrangement (190) to actuate the linkage (80) without the magnetic plate (120) coming into frictional engagement with the elevator guide rail (20).
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公开(公告)号：US20250115459A1
公开(公告)日：2025-04-10
申请号：US18483306
申请日：2023-10-09
Applicant: Otis Elevator Company
Inventor： Randall Roberts , Johanna Whitwell , James Tilsley Auxier , Yingxin Gao , Kyler Vensel , Kathleen Nicole Moore
IPC: B66B5/00
Abstract: A safety net system is provided for an elevator system including an elevator pit and multiple points of ingress to the elevator pit. The safety net system includes multiple sensors arranged in multiple planes encompassing the multiple points of ingress to perform sensing and to generate data corresponding to sensing results and a processor coupled to the multiple sensors to analyze whether the data indicates a person entering the elevator pit and to take an action based on results of the analysis.
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