Patents by Inventor Ronald Rohner
Ronald Rohner 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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Publication number: 20240014724Abstract: A constant force generator comprises a stator having a longitudinal axis and a permanently magnetic stator region, and an armature arranged to be movable relative to the stator in the direction of the longitudinal axis, the armature having a permanently magnetic armature region. The permanently magnetic stator region and the permanently magnetic armature region are each magnetised in a magnetisation direction perpendicular to the direction of the longitudinal axis. The permanently magnetic armature region has a first sub-region which has a magnetisation having a net magnetisation component in a direction opposite to the magnetisation direction of the permanently magnetic stator region, so that in the case of an only partly overlapping arrangement of the first sub-region and the permanently magnetic stator region, the net force component has a repulsive net force component which repels the armature away from the stator in the direction of the longitudinal axis.Type: ApplicationFiled: July 3, 2023Publication date: January 11, 2024Applicant: NTI AGInventors: Ronald ROHNER, Daniel AUSDERAU
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Patent number: 11381146Abstract: In a drive device having a tubular linear motor with a stator (1), an armature (2) and a bottom flange (30), the stator (1) is arranged on the bottom flange (30) in thermal contact with the bottom flange (30). The stator (1) is fluid-tightly enclosed by stainless steel. The bottom flange (30) consists at least partly of a material having a higher thermal conductivity than stainless steel. The stator (1), together with the bottom flange (30), is enclosed by a casing (40) made of stainless steel which is in thermal contact with the bottom flange (30) and encloses the bottom flange (30) and the stator (1) in common. The stator (1) is a tubular stator (1) having drive coils (12) arranged therein and also having a longitudinal axis and a through-hole (11) which extends through the tubular stator (1) coaxially with the longitudinal axis.Type: GrantFiled: August 31, 2020Date of Patent: July 5, 2022Assignee: NTI AGInventor: Ronald Rohner
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Publication number: 20210066990Abstract: A drive device comprises at least one tubular linear motor (M1; M1?; M2) which has a cylindrical armature (20; 120) and a tubular stator (10) with a cylindrical magnetic yoke (11) and a through-hole (13) coaxial with the magnetic yoke (11). Electric drive coils (12; 112) are arranged in the magnetic yoke (11). The armature (20; 120) has a non-magnetic armature tube (21) in which permanent magnets (23) are arranged. The armature (20; 120) extends coaxially through the through-hole (13) and is mounted so as to be movable in its longitudinal direction relative to the stator (10). The drive device comprises linear ball bearings (15; 115), and the armature (20; 120) of the tubular linear motor (M1; M1?; M2) is mounted in the linear ball bearings (15; 115).Type: ApplicationFiled: August 24, 2020Publication date: March 4, 2021Inventor: Ronald Rohner
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Publication number: 20210067025Abstract: In a drive device having a tubular linear motor with a stator (1), an armature (2) and a bottom flange (30), the stator (1) is arranged on the bottom flange (30) in thermal contact with the bottom flange (30). The stator (1) is fluid-tightly enclosed by stainless steel. The bottom flange (30) consists at least partly of a material having a higher thermal conductivity than stainless steel. The stator (1), together with the bottom flange (30), is enclosed by a casing (40) made of stainless steel which is in thermal contact with the bottom flange (30) and encloses the bottom flange (30) and the stator (1) in common. The stator (1) is a tubular stator (1) having drive coils (12) arranged therein and also having a longitudinal axis and a through-hole (11) which extends through the tubular stator (1) coaxially with the longitudinal axis.Type: ApplicationFiled: August 31, 2020Publication date: March 4, 2021Inventor: Ronald Rohner
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Patent number: 10686353Abstract: A rotary lifting device comprises a rotary lifting shaft having a longitudinal axis, a linear motor for moving the rotary lifting shaft in the direction of its longitudinal axis, and a rotary motor for rotating the rotary lifting shaft about its longitudinal axis. The rotary motor has a stator and a hollow rotor, through which the rotary lifting shaft extends. The hollow rotor is rotationally kinematically coupled to the rotary lifting shaft. The linear motor is arranged stationary relative to the rotary motor and has an armature having a motion axis along which the armature is supported so as to be linearly movable. The armature is kinematically coupled to the rotary lifting shaft with respect to the movement of the rotary lifting shaft in the direction of its longitudinal axis at a first longitudinal end of the rotary lifting shaft.Type: GrantFiled: September 19, 2017Date of Patent: June 16, 2020Assignee: NTI AGInventor: Ronald Rohner
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Publication number: 20180091030Abstract: A rotary lifting device comprises a rotary lifting shaft having a longitudinal axis, a linear motor for moving the rotary lifting shaft in the direction of its longitudinal axis, and a rotary motor for rotating the rotary lifting shaft about its longitudinal axis. The rotary motor has a stator and a hollow rotor, through which the rotary lifting shaft extends. The hollow rotor is rotationally kinematically coupled to the rotary lifting shaft. The linear motor is arranged stationary relative to the rotary motor and has an armature having a motion axis along which the armature is supported so as to be linearly movable. The armature is kinematically coupled to the rotary lifting shaft with respect to the movement of the rotary lifting shaft in the direction of its longitudinal axis at a first longitudinal end of the rotary lifting shaft.Type: ApplicationFiled: September 19, 2017Publication date: March 29, 2018Inventor: Ronald Rohner
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Patent number: 9590471Abstract: A rotary lifting device comprises an actuator shaft, a linear motor and a rotary motor for moving and rotating the actuator shaft about the longitudinal axis thereof. The rotary motor has a hollow rotor, through which the actuator shaft extends and which is kinematically coupled to the actuator shaft in terms of rotation. The linear motor has an armature coaxially arranged with respect to the actuator shaft and kinematically coupled to the actuator shaft at a first longitudinal end thereof. A step-down gear is arranged at a second longitudinal end of the actuator shaft and is capable of being moved in an axial direction relative to the rotary motor. The step-down gear is kinematically coupled to the actuator shaft at the drive side, both with respect to axial movement of the actuator shaft and with respect to rotating movement of the actuator shaft.Type: GrantFiled: November 14, 2013Date of Patent: March 7, 2017Assignee: NTI AGInventors: Ronald Rohner, Ernst Blumer
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Publication number: 20150022030Abstract: A linear motor comprises a stator (1) which has a longitudinal axis (16), and an armature (2) which is movable relative to the stator (1) between two end positions in the direction of the longitudinal axis (16). Either the stator (1) or the armature (2) has energizable electric coils (12) and the armature (2) or the stator (1) is excited by a permanent magnetic field which is periodic in the direction of the longitudinal axis (16). The linear motor further comprises a position detection system (100; 200; 300; 400; 500) for detecting the position of the armature (2) relative to the stator (1). The position detection system (100; 200; 300; 400; 500) is a contactless operating position detection system which is adapted to generate a signal that corresponds to the distance between a reference location (11a; 15a) on the stator (1) and a reference location (24a) on the armature (2).Type: ApplicationFiled: July 15, 2014Publication date: January 22, 2015Inventors: Ronald Rohner, Ernst Blumer, Sandro Ludolini
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Publication number: 20140139050Abstract: A rotary lifting device comprises an actuator shaft, a linear motor and a rotary motor for moving and rotating the actuator shaft about the longitudinal axis thereof. The rotary motor has a hollow rotor, through which the actuator shaft extends and which is kinematically coupled to the actuator shaft in terms of rotation. The linear motor has an armature coaxially arranged with respect to the actuator shaft and kinematically coupled to the actuator shaft at a first longitudinal end thereof. A step-down gear is arranged at a second longitudinal end of the actuator shaft and is capable of being moved in an axial direction relative to the rotary motor. The step-down gear is kinematically coupled to the actuator shaft at the drive side, both with respect to axial movement of the actuator shaft and with respect to rotating movement of the actuator shaft.Type: ApplicationFiled: November 14, 2013Publication date: May 22, 2014Applicant: NTI AGInventors: Ronald Rohner, Ernst Blumer
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Patent number: 7847442Abstract: In a linear motor (1) having a stator (2) and an armature (3), the stator (2) comprises a winding former (21) and a drive winding (22) provided on the winding former (21). Further, means are provided for preventing any contact between the drive winding (22) and the armature (3) in case the armature (3) penetrates through the winding former (21).Type: GrantFiled: April 8, 2009Date of Patent: December 7, 2010Assignee: NTI AGInventors: Ronald Rohner, Marco Hitz, Daniel Ausderau
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Publication number: 20090261664Abstract: In a linear motor (1) having a stator (2) and an armature (3), the stator (2) comprises a winding former (21) and a drive winding (22) provided on the winding former (21). Further, means are provided for preventing any contact between the drive winding (22) and the armature (3) in case the armature (3) penetrates through the winding former (21).Type: ApplicationFiled: April 8, 2009Publication date: October 22, 2009Applicant: NTI AGInventors: Ronald Rohner, Marco Hitz, Daniel Ausderau
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Patent number: 6532791Abstract: The invention relates to a method for increasing the positioning accuracy of an element (13) which is movably arranged relative to a stator (10). At least two sensors (11, 12) are provided in the stator (10), a first sensor (11) and a second sensor (12), which are arranged at a distance (a) from one another in the stator (10), with respect to the movement direction (P) of the movably arranged element (13). The element (13) which is arranged such that it can move relative to the stator (10) is provided with encoders (130) which can move together with the movable element (13) and, when the element (13) carries out a movement relative to the stator (10), firstly produce a sensor signal (S11) in the first sensor (11) and then, as the movement of the element progresses, produce a sensor signal (S12) in the second sensor (12). First of all, in a calibration run, the movable element (13) is moved over the entire possible range of movement.Type: GrantFiled: October 1, 2001Date of Patent: March 18, 2003Assignee: NTI AGInventors: Kuno Schmid, Daniel Ausderau, Marco Hitz, Ronald Rohner
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Publication number: 20020049553Abstract: The invention relates to a method for increasing the positioning accuracy of an element (13) which is movably arranged relative to a stator (10). At least two sensors (11, 12) are provided in the stator (10), a first sensor (11) and a second sensor (12), which are arranged at a distance (a) from one another in the stator (10), with respect to the movement direction (P) of the movably arranged element (13). The element (13) which is arranged such that it can move relative to the stator (10) is provided with encoders (130) which can move together with the movable element (13) and, when the element (13) carries out a movement relative to the stator (10), firstly produce a sensor signal (S11) in the first sensor (11) and then, as the movement of the element progresses, produce a sensor signal (S12) in the second sensor (12). First of all, in a calibration run, the movable element (13) is moved over the entire possible range of movement.Type: ApplicationFiled: October 1, 2001Publication date: April 25, 2002Applicant: NTI AGInventors: Kuno Schmid, Daniel Ausderau, Marco Hitz, Ronald Rohner
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Patent number: 6316848Abstract: A linear motor having a stator and a runner which can be displaced in the direction of the longitudinal axis of the stator comprises at least one memory unit in which characteristic data for the respective linear motor are stored.Type: GrantFiled: December 2, 1999Date of Patent: November 13, 2001Assignee: NTI AGInventors: Ronald Rohner, Marco Hitz, Luca Ritter
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Patent number: 5546298Abstract: Method for the parallel connection of inverters by reference to extreme current values. The method achieves an equalizing regulation of the currents of several parallelly connected inverters each time the inverter with the highest current value is switched and that the instant of switching of all inverters, apart from the one switched first, depends on a comparison of its respective current value with the current value of at least one earlier switched inverter.Type: GrantFiled: December 2, 1993Date of Patent: August 13, 1996Assignee: Inventio AGInventor: Ronald Rohner
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Patent number: 5450309Abstract: An efficient, high-speed switching system for parallel inverters is particularly suited for inverters employing pulse modulation. Inverters with an arbitrary number of outputs are mutually connected, either directly or through impedance coils. The system provides switching, in parallel, of an arbitrary number of the inverters. The system allows for control of current distribution between the inverters.Type: GrantFiled: December 9, 1992Date of Patent: September 12, 1995Assignee: Inventio AGInventor: Ronald Rohner