Patents by Inventor Jan Ruhnke

Jan Ruhnke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240158202
    Abstract: An elevator system with an elevator car includes a controller for the elevator car, at least one processor, and a wireless network access point. According to a method of controlling the elevator car, a portable device transmits a probe request, the portable device is carried by a passenger of the elevator system. The probe request contains at least a first probe request data set, the first probe request data set is of a first type. The wireless network access point detects the probe request. The at least one processor accesses data storage. In the data storage there is stored a plurality of passenger profiles. Each passenger profile of the plurality of passenger profiles contains a first profile data set of the first type and a second profile data set representing at least one destination floor.
    Type: Application
    Filed: August 11, 2023
    Publication date: May 16, 2024
    Inventors: Jan Ruhnke, Felix Donath
  • Publication number: 20240140759
    Abstract: Disclosed is an elevator system, including a hoistway; an elevator car in the hoistway; sensors in the hoistway operationally coupled to the elevator car and configured to capture sensor data indicative of a person being in the hoistway, and a processor configured to determine from the sensor data that the person is in the hoistway; and wherein the elevator car is configured to reduce speed or stop when the processor determines the person is in the hoistway.
    Type: Application
    Filed: November 21, 2022
    Publication date: May 2, 2024
    Inventors: Appalaraju Marpu, Malleswara Reddy Gutti, Stefan Ey, Javier Muñoz Sotoca, Luis Mena, Peter Herkel, Jan Ruhnke, Felix Donath, Colette Ruden, Randy Roberts, Craig Drew Bogli, Johanna Whitwell, Mustapha Toutaoui, Sylvain Kabre
  • Publication number: 20240076163
    Abstract: A method of learning a rescue time period by an elevator system (101). The elevator system (101) includes an elevator car (103) moved by a machine (111) and a machine brake (120), arranged such that braking of the machine (111) by the machine brake (120) brakes motion of the elevator car (103). The method includes releasing the machine brake (120) for at least one test time period, at the end of which the machine brake (120) is engaged, detecting a corresponding at least one maximum travel speed of the elevator car (103) reached as a result of releasing the machine brake (120) for each at least one test time period, checking whether each at least one maximum travel speed is an acceptable speed, and setting the rescue time period based upon said checking.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 7, 2024
    Inventors: Matthias Hoinkis, Sebastian Gehrke, Jan Ruhnke, Peter Herkel
  • Publication number: 20240051791
    Abstract: An elevator safety device 16 for monitoring a landing door 10 of an elevator system 2. The elevator system 2 includes a landing door sensor 14 arranged to detect a state of the landing door 10. The elevator safety device 16 includes a power source 20 arranged to power the landing door sensor 14 independently of a power supply 19 of the elevator system 2 and a memory 22 arranged to record a state of the landing door 10 detected by the landing door sensor 14 when the landing door sensor 14 is powered by the power source 20.
    Type: Application
    Filed: November 10, 2022
    Publication date: February 15, 2024
    Inventor: Jan Ruhnke
  • Publication number: 20230399199
    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: Application
    Filed: October 14, 2022
    Publication date: December 14, 2023
    Inventor: Jan Ruhnke
  • Publication number: 20220106153
    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: Application
    Filed: August 18, 2021
    Publication date: April 7, 2022
    Inventors: Jan Ruhnke, Felix Benjamin Donath
  • Patent number: 11267677
    Abstract: Elevator systems and methods are provided. The systems include a traveling component movable along a guide rail within an elevator shaft, an elevator machine operably connected to the traveling component and including a machine brake, and an overspeed safety system. The overspeed safety system includes a safety brake and an electromechanical actuator, the brake engageable with the guide rail. A safety system controller operably connects to the electromechanical actuator and triggers the electromechanical actuator due to at least a detected triggering event. A temporary power supply is operably connected to the overspeed safety system to provide power in the event of a power failure.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 8, 2022
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Jan Ruhnke, Helge Krambeck
  • Publication number: 20220063955
    Abstract: An elevator system includes an elevator car moveable between a plurality of landings and a brake configured to stop the elevator car from moving within the elevator shaft. The system includes a safety controller and at least one safety device. The safety controller monitors for a change in status of the at least one safety device. Upon detection of a change to a new status, the safety controller evaluates whether the new status is a first status corresponding to an emergency situation or a second status corresponding to a non-critical change. The safety controller is further configured to apply the brake immediately to stop the elevator car when the new status is a first status or allow the elevator car to move to a landing when the new status is a second status.
    Type: Application
    Filed: August 12, 2021
    Publication date: March 3, 2022
    Inventors: Jan Ruhnke, Felix Benjamin Donath
  • Publication number: 20220017330
    Abstract: An elevator safety circuit for an elevator system in which an output is arranged to selectively provide an electrical current from an input to an electromagnetic brake coil via a current flow path. An actuator transistor is arranged in series along the current flow path between the input and the output, the actuator transistor being arranged to selectively allow passage of the electrical current. A controller is arranged to carry out a test operation when the braking element is in the open position. The test operation comprises operating the actuator transistor in its disabled mode for a time period, monitoring the electrical current through the brake coil, and determining whether the magnitude of the electrical current reduces during said time period, the time period being selected such that the magnitude of the electrical current remains sufficient for keeping the braking element in the open position during the test.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 20, 2022
    Inventors: Peter Herkel, Jan Ruhnke
  • Publication number: 20210371240
    Abstract: An emergency terminal stopping system for an elevator system, the emergency terminal stopping system including: a sensor configured to determine data related to the motion of an elevator car moving within an elevator hoistway; at least one elevator brake configured to halt the motion of the elevator car; at least one elevator safety gear device provided on the elevator car; and at least one buffer provided at a lower portion of the hoistway.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 2, 2021
    Inventors: Peter Herkel, Jan Ruhnke
  • Publication number: 20210309488
    Abstract: An elevator safety system for an elevator system including: a position reference system configured for determining a current position of an elevator car within the elevator system; at least one brake configured to bring the elevator car to a safe stop; a controller configured to activate the at least one brake; the controller configured to: receive data from the position reference system; calculate a current acceleration from the current position of the elevator car; compare the current acceleration to a predetermined acceleration threshold; and activate the at least one brake when the current acceleration exceeds the predetermined acceleration threshold.
    Type: Application
    Filed: November 20, 2020
    Publication date: October 7, 2021
    Inventor: Jan Ruhnke
  • Publication number: 20200354189
    Abstract: An elevator car 104 is provided which comprises an elevator control device 106 arranged to accept an elevator control command from a passenger in the elevator car 104. The elevator car is arranged to receive a query from a support provider 116; communicate said query to the passenger; and send a response to the support provider 116 based on passenger input provided via the elevator control device 106.
    Type: Application
    Filed: May 6, 2019
    Publication date: November 12, 2020
    Inventors: Jan Ruhnke, John F. Kleine, JR., Gloria Victoria Mariscal, Hiromitsu Miyajima, Atsushi Yamada, Keiji Hashimoto, Hisanori Seki
  • Publication number: 20200130985
    Abstract: A method of detecting whether an elevator safety device (20) of an elevator system (2) mounted to a moving object (6, 21), such as an elevator car (6) or a counterweight (21), has entered a fully activated state in which at least one engagement member (26a, 26b) of the elevator safety device (20) engages with a guide member (14).
    Type: Application
    Filed: October 25, 2019
    Publication date: April 30, 2020
    Inventor: Jan Ruhnke
  • Publication number: 20200071129
    Abstract: Elevator systems and methods are provided. The systems include a traveling component movable along a guide rail within an elevator shaft, an elevator machine operably connected to the traveling component and including a machine brake, and an overspeed safety system. The overspeed safety system includes a safety brake and an electromechanical actuator, the brake engageable with the guide rail. A safety system controller operably connects to the electromechanical actuator and triggers the electromechanical actuator due to at least a detected triggering event. A temporary power supply is operably connected to the overspeed safety system to provide power in the event of a power failure.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 5, 2020
    Inventors: Jan Ruhnke, Helge Krambeck
  • Publication number: 20190389694
    Abstract: An elevator system (2) comprises a hoistway (4) extending between a plurality of landings (8a, 8b, 8c); an elevator car (60) configured for moving in two opposite directions along the hoistway (4); and an elevator safety system (1). The elevator safety system (1) comprises at least one safety gear (20) configured for moving along the hoistway (4) and, upon activation, braking movement the elevator car (60); at least one mobile safety node (43, 45) configured for moving along the hoistway (4) with the at least one safety gear (20) and for controlling the at least one safety gear (20); and at least one stationary safety node (42, 44). The elevator safety system (1) further comprises a communication bus (17) connecting the safety nodes (42-45) with each other and allowing the safety nodes (42-45) to communicate with each other.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 26, 2019
    Inventors: Peter Herkel, Jan Ruhnke, Dirk H. Tegtmeier, Bernd Fischer