Patents by Inventor Marvin Dehmlow
Marvin Dehmlow 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).
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Patent number: 11014786Abstract: The subject-matter disclosed relates to a power control system (10) for a battery driven elevator; the power control system (10) comprising a DC battery (16) for providing electrical power to an electric motor (24) of the elevator system; and a power controller (22) including a power converter (26), an power inverter (28), and a DC intermediate circuit (30) connected in between the power converter (26) and the power inverter (28); wherein an output of the DC battery (16) is connected to the DC intermediate circuit (30).Type: GrantFiled: February 21, 2018Date of Patent: May 25, 2021Assignee: OTIS ELEVATOR COMPANYInventors: Ismail Agirman, Marvin Dehmlow, Bernd Fischer, Carlo Mezzadri
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Patent number: 10071880Abstract: A drive unit for an elevator system, the drive unit including a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link.Type: GrantFiled: February 21, 2013Date of Patent: September 11, 2018Assignee: OTIS ELEVATOR COMPANYInventors: Andreas Tutat, Ibrahim Ia Atalmis, Herbert Horbrügger, Marvin Dehmlow
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Publication number: 20180237268Abstract: The subject-matter disclosed relates to a power control system (10) for a battery driven elevator; the power control system (10) comprising a DC battery (16) for providing electrical power to an electric motor (24) of the elevator system; and a power controller (22) including a power converter (26), an power inverter (28), and a DC intermediate circuit (30) connected in between the power converter (26) and the power inverter (28); wherein an output of the DC battery (16) is connected to the DC intermediate circuit (30).Type: ApplicationFiled: February 21, 2018Publication date: August 23, 2018Inventors: Ismail Agirman, Marvin Dehmlow, Bernd Fischer, Carlo Mezzadri
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Patent number: 10035680Abstract: An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the output signal; wherein at least one of the relays is a forced guided relay and at least one of the relays is other than a forced guided relay.Type: GrantFiled: February 14, 2013Date of Patent: July 31, 2018Assignee: OTIS ELEVATOR COMPANYInventors: Jochen Thomas Richter, Hebert Horbrügger, Richard F. Magda, Marvin Dehmlow
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Publication number: 20160039633Abstract: A drive unit for an elevator system, the drive unit including a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link.Type: ApplicationFiled: February 21, 2013Publication date: February 11, 2016Inventors: Andreas Tutat, Ibrahim IA Atalmis, Herbert Horbrügger, Marvin Dehmlow
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Publication number: 20160002005Abstract: An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the output signal; wherein at least one of the relays is a forced guided relay and at least one of the relays is other than a forced guided relay.Type: ApplicationFiled: February 14, 2013Publication date: January 7, 2016Inventors: Jochen Thomas Richter, Hebert Horbrügger, Richard F. Magda, Marvin Dehmlow
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Patent number: 8827042Abstract: An exemplary elevator machine includes a motor that operates in a first mode to move an elevator car and in a second mode to generate power. A line reactor is associated with the motor for delivering power generated by the motor operating in the second mode. The line reactor includes an air core inductor.Type: GrantFiled: March 31, 2009Date of Patent: September 9, 2014Assignee: Otis Elevator CompanyInventors: Wolfgang Lutz Zemke, Marvin Dehmlow, Michael Mann
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Patent number: 8631908Abstract: An elevator system and associated method includes power control for operating an elevator (2) in an emergency mode wherein the elevator (2) includes a car (4), a drive motor (10), a motor drive unit (26) which supplies power to the drive motor (10) and controls the same and an emergency power supply (42). The motor drive unit (10) has a predetermined normal operation switching frequency. In an emergency mode, power is supplied to the motor from the emergency power supply (42) while the motor drive unit is in an emergency mode. An actual emergency operation condition characteristic is determined for setting the switching frequency of the motor drive unit (46) dependent on the actual emergency operation condition characteristic.Type: GrantFiled: July 25, 2008Date of Patent: January 21, 2014Assignee: Otis Elevator CompanyInventors: Helmut Schroeder-Brumloop, Marvin Dehmlow, Ingo Engelhard, Andreas Tutat
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Patent number: 8585158Abstract: A control circuit selectively energizes a load, such as an elevator or escalator brake (12). The circuit includes a transformer (28) with a primary-winding connected to a series with a semiconductor switch (40) that is driven by a pulse width modulation (PWM) controller. Power to the PWM controller is supplied through safety relay contacts (52A, 52B). When the load is to be energized, the safety relay contacts are closed and the PWM controller drives the semiconductor switch to supply energy through the transformer to the secondary circuit. A command signal to secondary circuitry (64) causes power in the secondary to be applied to the load (12). If the safety relay contacts open, the PWM controller turns off and power is no longer delivered to the secondary circuit and the load.Type: GrantFiled: June 17, 2008Date of Patent: November 19, 2013Assignee: Otis Elevator CompanyInventors: Juergen Gewinner, Marvin Dehmlow
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Publication number: 20120000730Abstract: An exemplary elevator machine includes a motor that operates in a first mode to move an elevator car and in a second mode to generate power. A line reactor is associated with the motor for delivering power generated by the motor operating in the second mode. The line reactor comprises an air core inductor.Type: ApplicationFiled: March 31, 2009Publication date: January 5, 2012Inventors: Wolfgang Lutz Zemke, Marvin Dehmlow, Michael Mann
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Publication number: 20110120810Abstract: Method for operating an elevator (2) in an emergency mode wherein the elevator (2) comprises a car (4), a drive motor (10), a motor drive unit (26) which supplies power to the drive motor (10) and controls the same and an emergency power supply (42), wherein the motor drive unit (10) has a predetermined normal operation switching frequency, comprising the following steps (a) supplying power from the emergency power supply (42); (b) bringing the motor drive unit ( ) in an emergency mode; (c) determining an actual emergency operation condition characteristic; and (d) setting the switching frequency of the motor drive unit (46) dependent on the actual emergency operation condition characteristic.Type: ApplicationFiled: July 25, 2008Publication date: May 26, 2011Inventors: Helmut Schroeder-Brumloop, Marvin Dehmlow, Ingo Engelhard, Andreas Tutat
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Publication number: 20110094837Abstract: A control circuit selectively energizes a load, such as an elevator or escalator brake (28). The circuit includes a transformer (12) with a primary-winding connected to a series with a semiconductor switch (40) that is driven by a pulse width modulation (PWM) controller. Power to the PWM controller is supplied through safety relay contacts (52A, 52B). When the load is to be energized, the safety relay contacts are closed and the PWM controller drives the semiconductor switch to supply energy through the transformer to the secondary circuit. A command signal to secondary circuitry (64) causes power in the secondary to be applied to the load (12). If the safety relay contacts open, the PWM controller turns off and power is no longer delivered to the secondary circuit and the load.Type: ApplicationFiled: June 17, 2008Publication date: April 28, 2011Applicant: OTIS ELEVATOR COMPANYInventors: Juergen Gewinner, Marvin Dehmlow
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Patent number: 7650968Abstract: A power supply for an elevator drive includes a voltage input, a comparator for comparing the input voltage with a predetermined threshold, a transformer having a primary winding and a secondary winding connected to the elevator drive. The transformer has a single tapped primary winding. When the input voltage exceeds the predetermined threshold input, the comparator output causes power to be supplied to the primary winding via one of an end of the winding or the tapping of the winding, and when the input voltage is below the predetermined threshold, input power is supplied to the primary winding via the other of the end of the primary winding and the tapping of the winding.Type: GrantFiled: December 31, 2004Date of Patent: January 26, 2010Assignee: Otis Elevator CompanyInventors: Robert Oesterle, Marvin Dehmlow, Axel Friedrich
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Publication number: 20090127029Abstract: A power supply for an elevator drive, comprising a voltage input, a comparator for comparing the input voltage with a predetermined threshold, a transformer having a primary winding and a secondary winding connected to the elevator drive; where the transformer has a single tapped primary winding and wherein, when the input voltage exceeds the predetermined threshold input, the comparator output causes power to be supplied to the primary winding via one of an end of the winding or the tapping of the winding, and when the input voltage is below the predetermined threshold, input power is supplied to the primary winding via the other of the end of the primary winding and the tapping of the winding.Type: ApplicationFiled: December 31, 2004Publication date: May 21, 2009Inventors: Robert Oesterle, Marvin Dehmlow, Axel Friedrich
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Patent number: 6563707Abstract: A chassis (11) for mounting component units (17, 19) of an electric switch cabinet for elevators and escalators, comprising at least one shaped part (15) serving as main supporting member, said shaped part being composed with a plastics material of lasting resetting force with respect to compression and being provided with at least one receiving recess (29, 31) for receiving a component unit (17) of a first type in substantially form-locking manner, and comprising at least one mounting rail (21) serving as auxiliary supporting member and anchored in the shaped part (15), said mounting rail (21), at least over a predetermined partial length thereof, being accessible in a free space (42) of the shaped part (15) for mounting at least one component unit (19) of a second type to said mounting rail (21), with said free space (42) being designed to selectively receive component units of the second type in different numbers, shapes and sizes.Type: GrantFiled: February 14, 2002Date of Patent: May 13, 2003Assignee: Otis Elevator CompanyInventors: Hartmut Engler, Marvin Dehmlow, Andreas O. Belkner, Vera Else Marta Steifa, Wolfgang Schoppa
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Patent number: 5777280Abstract: A load compensation calibration method for an elevator controller includes the steps of moving an elevator car in a first direction, the first direction a first creep speed region; determining the time to travel a given distance; during the first run; determining a first actual creep speed of the first creep speed region; determining a difference between a dictated creep speed and the first actual creep speed; determining a first compensation frequency for minimizing the difference between the dictated creep speed and the first actual creep second; moving the elevator car in a second direction, the speed direction including a second creep speed region; determining the time to travel a given distance during the second run; determining a second actual creep speed of the second creep speed region; determining a difference between a dictated creep speed and the second actual creep speed; determining a second compensation frequency for minimizing the difference between the dictated creep speed and the second actuaType: GrantFiled: August 27, 1996Date of Patent: July 7, 1998Assignee: Otis Elevator CompanyInventors: Burkhard Braasch, Marvin Dehmlow, Jurgen Dieluweit, Christoph M. Ernecke, Thomas Gietzold, Alberto Vecchiotti