Patents by Inventor Norbert Coenen
Norbert Coenen 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: 7843098Abstract: A method for operating an electromotive drive of a textile machine, comprising a contactlessly mounted rotor and catch bearings. The rotor rests on one catch bearing prior to initial operation, and is spaced therefrom by an air gap during stationary operation. A control device allows the rotor to be held in a force-free floating state during stationary operation. The method executes the following steps: (a) inputting an output signal from the control device for maintaining the force-free floating state during operation; (b) calculating the air gap by evaluating the output signal; (c) comparing the calculated value with predetermined limit values; and (d) deactuating the drive when the limit values are passed. The control device comprises a position sensor with at least one sensor coil, at least one actuator coil, a position controller and an integrator, at which the output signal is obtained to determine the air gap.Type: GrantFiled: June 28, 2006Date of Patent: November 30, 2010Assignee: Oerlikon Textile GmbH & Co. KGInventors: Norbert Coenen, Marco Linke
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Publication number: 20090230897Abstract: An electric motor for a textile machine can be operated as a generator if the supply voltage fails. The electric motor comprises a rotor configured as the motor armature and a motor phase control circuit comprising a plurality of semiconductor components wherein the electric motor can be short-circuited if a predeterminable limit value is passed during generator operation. The motor circuit causes the short-circuiting on passing the limit value by activating one or more of the semiconductor components. The multi-phase electric motor is used as the single drive of a rotor of the textile machine. wherein the semiconductor components of the phase control bridge. on passing a predeterminable limit value, contactlessly short-circuit the electric motor to brake the electric motor.Type: ApplicationFiled: May 18, 2006Publication date: September 17, 2009Applicant: Oerlikon Textile GmbH & Co. KGInventor: Norbert Coenen
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Publication number: 20090134727Abstract: A method for operating an electromotive drive of a textile machine, comprising a contactlessly mounted rotor and catch bearings. The rotor rests on one catch bearing prior to initial operation, and is spaced therefrom by an air gap during stationary operation. A control device allows the rotor to be held in a force-free floating state during stationary operation. The method executes the following steps: (a) inputting an output signal from the control device for maintaining the force-free floating state during operation; (b) calculating the air gap by evaluating the output signal; (c) comparing the calculated value with predetermined limit values; and (d) deactuating the drive when the limit values are passed. The control device comprises a position sensor with at least one sensor coil, at least one actuator coil, a position controller and an integrator, at which the output signal is obtained to determine the air gap.Type: ApplicationFiled: June 28, 2006Publication date: May 28, 2009Applicant: Oerlikon Textile GmbH & Co. KGInventors: Norbert Coenen, Marco Linke
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Patent number: 7377095Abstract: The invention relates to an open end spinning device comprising a single-motor driven spinning rotor whose cup is rotationally actuated in the rotor housing which is negatively pressurized and closed by a cover element during a spinning process. According to said invention, the rotor house (2) is embodied in the form of a central element which is fixable to the frame of a textile machine and connects the control (3) of the spinning rotor (21) to the carrier (4) for the cover element (6) provided with a fibre band releasing device (23).Type: GrantFiled: July 6, 2004Date of Patent: May 27, 2008Assignee: Oerlikon Textile GmbH & Co. KGInventors: Heinz-Georg Wassenhoven, Georg Schmidt, Norbert Coenen, Friedhelm Mistler, Stephan Bühren
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Publication number: 20070130908Abstract: The invention relates to an open end spinning device comprising a single-motor driven spinning rotor whose cup is rotationally actuated in the rotor housing which is negatively pressurized and closed by a cover element during a spinning process. According to said invention, the rotor house (2) is embodied in the form of a central element which is fixable to the frame of a textile machine and connects the control (3) of the spinning rotor (21) to the carrier (4) for the cover element (6) provided with a fibre band releasing device (23).Type: ApplicationFiled: July 6, 2004Publication date: June 14, 2007Applicant: Saurer GmbH & Co. KGInventors: Heinz-Georg Wassenhoven, Georg Schmidt, Norbert Coenen, Friedhelm Mistler, Stephan Buhren
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Patent number: 7111446Abstract: An open-end spinning unit, which comprises a spinning rotor 1 that rotates during the spinning operation at a high rotational speed in a closed rotor housing 2. The spinning rotor is rotated by an individual electric motor drive 18 and supported in a smoothly running bearing assembly. When the drive is disconnected and the rotor housing is properly closed by a cover element 8, the spinning rotor is biased and rotated by an airflow resulting from a vacuum prevailing in the rotor housing and the motor drive operates as a generator. At least one of the electric quantities Pv, Gv which develop during the generator operation of the drive 18 is monitored, and upon exceeding a threshold value which can only be attained when the cover element is properly closed, a signal S is generated and processed in a control unit 30 to cause the cover element 8 on the rotor housing 2 to be locked, and thereafter the drive 18 is connected to its electrical supply to rotate the rotor at high speed.Type: GrantFiled: May 19, 2005Date of Patent: September 26, 2006Assignee: Saurer GmbH & Co. KGInventors: Heinz-Georg Wassenhoven, Norbert Coenen
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Publication number: 20050279076Abstract: A method and an apparatus for operating an open-end spinning unit, which comprises a spinning rotor 1 that rotates during the spinning operation at a high rotational speed in a closed rotor housing 2. The spinning rotor is rotated by an individual electric motor drive 18 and supported in a smoothly running bearing assembly. When the drive is disconnected and the rotor housing is properly closed by a cover element 8, the spinning rotor is biased and rotated by an airflow resulting from a vacuum prevailing in the rotor housing and the motor drive operates as a generator. At least one of the electric quantities Pv, Gv which develop during the generator operation of the drive 18 is monitored, and upon exceeding a threshold value which can only be attained when the cover element is properly closed, a signal S is generated and processed in a control unit 30 to cause the cover element 8 on the rotor housing 2 to be locked, and thereafter the drive 18 of the spinning rotor 3 is released for a restart.Type: ApplicationFiled: May 19, 2005Publication date: December 22, 2005Inventors: Heinz-Georg Wassenhoven, Norbert Coenen
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Patent number: 6720695Abstract: A rotor spinning device with a contactless passive radial bearing for the spinning rotor. A damping device exerts magnetic forces on the rotor shaft (9) of the spinning rotor by means of operating elements (11, 12), and in this manner damps radially directed oscillations of the spinning rotor. The stationary operating elements (11, 12), which are embodied as magnetic elements, act directly on a magnetic element (8), which is fixedly connected with the rotor shaft (9), wherein the magnetic element (8) is an operative element of the passive bearing of the spinning rotor. A rapid, effective damping of the oscillations is possible without large expenditures.Type: GrantFiled: July 3, 2001Date of Patent: April 13, 2004Assignee: W. Schlafhorst AG & Co.Inventor: Norbert Coenen
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Patent number: 6590307Abstract: A device for the attitude control of a rapidly rotating rotor, especially a spinning rotor, supported in a contactless manner. The device comprises a sensor device for the continuous generation of rotor attitude signals and a control device (6) that processes the rotor attitude signals and continuously outputs a correcting variable to an actuating device that influences the rotor attitude. The control device (6) is set up in such that the rise of the waveform of a resultant signal from which the correcting variable is derived is limited to a maximum amount and, upon the occurrence of higher oscillation frequencies of the rotor attitude signals, the oscillation amplitudes of the resultant signal for the actuating device can at the same time be reduced with a small phase error. The device makes it possible to achieve low energy consumption, an expanded controllability and greater operational safety in a simple manner.Type: GrantFiled: January 31, 2002Date of Patent: July 8, 2003Assignee: W. Schlafhorst AG & Co.Inventor: Norbert Coenen
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Patent number: 6516601Abstract: A method of operating an open-end spinning device (1) whose spinning rotor (3) is supported with its rotor shaft (4) radially and axially positioned via a magnetic bearing arrangement (5) which comprises two magnetic bearings with spaced permanent magnet pairs (33, 34 and 43, 44), a central position control device (50) with actor coils (32, 42), and a rotor position sensor (51). An output signal (ASLS) of the position sensor (51) is processed in the central position control device (50) such that a coil current (i) initiated by a controller (53) is initially regulated toward zero by negative feedback of an integrator (55).Type: GrantFiled: May 10, 2001Date of Patent: February 11, 2003Assignee: W. Schlafhorst AG & Co.Inventor: Norbert Coenen
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Publication number: 20020103568Abstract: A device for the attitude control of a rapidly rotating rotor, especially a spinning rotor, supported in a contactless manner. The device comprises a sensor device for the continuous generation of rotor attitude signals and a control device (6) that processes the rotor attitude signals and continuously outputs a correcting variable to an actuating device that influences the rotor attitude. The control device (6) is set up in such that the rise of the waveform of a resultant signal from which the correcting variable is derived is limited to a maximum amount and, upon the occurrence of higher oscillation frequencies of the rotor attitude signals, the oscillation amplitudes of the resultant signal for the actuating device can at the same time be reduced with a small phase error. The device makes it possible to achieve low energy consumption, an expanded controllability and greater operational safety in a simple manner.Type: ApplicationFiled: January 31, 2002Publication date: August 1, 2002Inventor: Norbert Coenen
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Publication number: 20020047404Abstract: A rotor spinning device with a contactless passive radial bearing for the spinning rotor. A damping device exerts magnetic forces on the rotor shaft (9) of the spinning rotor by means of operating elements (11, 12), and in this manner damps radially directed oscillations of the spinning rotor. The stationary operating elements (11, 12), which are embodied as magnetic elements, act directly on a magnetic element (8), which is fixedly connected with the rotor shaft (9), wherein the magnetic element (8) is an operative element of the passive bearing of the spinning rotor. A rapid, effective damping of the oscillations is possible without large expenditures.Type: ApplicationFiled: July 3, 2001Publication date: April 25, 2002Inventor: Norbert Coenen
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Publication number: 20020002816Abstract: A method of operating an open-end spinning device (1) whose spinning rotor (3) is supported with its rotor shaft (4) radially and axially positioned via a magnetic bearing arrangement (5) which comprises two magnetic bearings with spaced permanent magnet pairs (33, 34 and 43, 44), a central position control device (50) with actor coils (32, 42), and a rotor position sensor (51). An output signal (ASLS) of the position sensor (51) is processed in the central position control device (50) such that a coil current (i) initiated by a controller (53) is initially regulated toward zero by negative feedback of an integrator (55).Type: ApplicationFiled: May 10, 2001Publication date: January 10, 2002Inventor: Norbert Coenen
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Patent number: 6220009Abstract: A damping device for the spinning rotor (3) of an open-end spinning device (1). The spinning rotor (3) is fixed radially and axially via a magnet support arrangement (43), supported in a galvanically separated manner as regards the housing of the spinning device (1) and rotates with a high rotary frequency. The damping device (42) converts oscillations occurring especially during the acceleration phase and when passing through the natural frequency range directly into friction losses.Type: GrantFiled: April 27, 1999Date of Patent: April 24, 2001Assignee: W. Schlafhorst AG & Co.Inventor: Norbert Coenen
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Patent number: 6124658Abstract: A bearing for the shaft of a spinning rotor of an open-end spinning machine, wherein the shaft is magnetically supported axially and radially without contact by two axially spaced-apart magnet pairs on the shaft and stator housing in dispositions rotationally symmetrical to the axis of the rotor. The magnet pairs have nonidentical magnet poles facing one another and an electromagnetic center position regulator is provided to maintain an axial center position.Type: GrantFiled: June 10, 1999Date of Patent: September 26, 2000Assignee: W. Schlafhorst AG & Co.Inventor: Norbert Coenen
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Patent number: 6006510Abstract: An open-end spinning device 1 with a bearing arrangement for supporting a spinning rotor 3, which is seated so it can rotate at high turning frequency and is electrically insulated in relation to the housing of the spinning device and of the bearing. The static charge being created on the spinning rotor 3 during the spinning process is diverted to a grounded component of the spinning device 1 by means of an electrical conducting mechanism. The electrical conducting mechanism 40 is arranged in the area of the axial bearing 18.Type: GrantFiled: April 27, 1999Date of Patent: December 28, 1999Assignee: W. Schlafhorst AG & Co.Inventor: Norbert Coenen
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Patent number: 5642091Abstract: A method and apparatus for transmitting data within a textile machine of the type having a central main power supply and many identical work or spinning stations is disclosed with the data being for controlling operational at independently operable work stations, particularly in open-end bobbin winding machines. A separate power supply is included for providing a buffer voltage for use at memories within the individual spinning station central units, with the power supply output being DC voltage at a predetermined level. The DC buffer voltage signal is modulated with the data for transmission to the work station, transmitted to the work station and demodulated thereat for use.Type: GrantFiled: July 22, 1996Date of Patent: June 24, 1997Assignee: W. Schlafhorst AG & Co.Inventors: Norbert Coenen, Erwin Peters
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Patent number: 5444633Abstract: An automatic textile machine includes a multiplicity of work stations each having its own work station electronics for controlling progress of work done at the work station. A method for detecting a position of a cop carrier carrying a textile cop in the vicinity of a work station includes evaluating mistuning of an oscillator circuit as information with a secondary coil disposed on the cop carrier; detecting the information transmitted by the cop carrier with a sensor device; carrying the information to the work station electronics; and processing the information with the work station electronics to initiate further operations. An apparatus for detecting the position of a cop carrier carrying a textile cop in the vicinity of one of the work stations includes a secondary coil disposed on the cop carrier, and a sensor disposed in the vicinity the winding station. The sensor is connected to the winding station electronics and detects information transmitted by the cop carrier.Type: GrantFiled: March 2, 1994Date of Patent: August 22, 1995Assignee: W. Schlafhorst AG & Co.Inventors: Norbert Coenen, Ulrich Wirtz, Ferdinand-Josef Hermanns, Jurgen Breuer
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Patent number: 5386684Abstract: A coordinating apparatus for insuring the proper positioning of the traveling service unit with a respective work station of a textile machine so that data such as, for example, information concerning the servicing requirements of the respective work station and operating instructions, can be communicated between the service unit and the work station.Type: GrantFiled: December 1, 1992Date of Patent: February 7, 1995Assignee: W. Schlafhorst & Co.Inventors: Karsten Simon, Norbert Coenen