Patents by Inventor Wolfgang Krauth
Wolfgang Krauth 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: 20170155289Abstract: The invention relates to a stator element (100) for an electric motor comprising: a defined number of claw poles (10, 20, 30, 40), said stator element (100) being heat treated during production, in the region of the Curie temperature of the stator element (100); said stator element (100) being cooled after the heat treatment.Type: ApplicationFiled: February 3, 2015Publication date: June 1, 2017Inventors: Wolfgang Krauth, Tilo Koenig
-
Patent number: 9238563Abstract: Some aspects relate to an apparatus for detecting an edge of a material web. In some examples, the apparatus comprises an ultrasound sensor which comprises two or more separately readable ultrasound receiver elements and an ultrasound transmitter element, wherein the ultrasound transmitter element is designed and arranged such that it applies an ultrasound measurement signal to two or more of the ultrasound receiver elements.Type: GrantFiled: April 26, 2013Date of Patent: January 19, 2016Assignee: TEXMAG GMBH VERTRIEBSGESELLSCHAFTInventors: Lars Zwerger, Wolfgang Krauth, Günter Franz
-
Patent number: 9236783Abstract: The invention relates to an electric machine, comprising a rotor (8; 50; 76) and a stator (9; 29; 77), wherein the rotor (8; 50; 76) and/or the stator (9; 29; 77) comprise at least one laminated core (2; 11; 32; 72) having a substantially rectangular cross-section, wherein the laminated core (2; 11; 32; 72) comprises a sheet metal strip (1), wherein the sheet metal strip (1) is wound in a coil shape.Type: GrantFiled: January 21, 2010Date of Patent: January 12, 2016Assignee: Robert Bosch GmbHInventors: Wolfgang Krauth, Tilo Koenig
-
Patent number: 8884484Abstract: The invention relates to a DC motor 1 comprising a cylindrical coil carrier 7; 17 comprising wire guide element 9; 10, 12 for guiding a first winding wire 80; 180 and a second winding wire 81; 181 of an air-gap winding on both side end sections, wherein the first winding wire 80; 180 and the second winding wire 81; 181 each comprise rectangular winding segments 20; 120, wherein the rectangular winding segments 20; 120 of the second winding wire 81; 181 are disposed overlapping on the cylindrical coil carrier 7; 17 and the wire guide elements 9; 10, 12 are designed for guiding the first winding wire 80; 180 and the second winding wire 81; 181 past each other.Type: GrantFiled: December 14, 2009Date of Patent: November 11, 2014Assignee: Robert Bosch GmbHInventors: Wolfgang Krauth, Tilo Koenig
-
Patent number: 8789421Abstract: A device for detecting a selvage of a material web or the selvage position in one measuring direction. The device comprises at least one ultrasonic sensor, with the ultrasonic sensor comprising a transmitter element and a receiver element. The external contour of at least one of the transmitter elements and/or of the receiver elements comprises at least one arc segment side and at least one flattened side.Type: GrantFiled: March 23, 2011Date of Patent: July 29, 2014Assignee: TexMag GmbH VertriebsgesellschaftInventors: Wolfgang Krauth, Lars Zwerger
-
Publication number: 20130308427Abstract: Some aspects relate to an apparatus for detecting an edge of a material web. In some examples, the apparatus comprises an ultrasound sensor which comprises two or more separately readable ultrasound receiver elements and an ultrasound transmitter element, wherein the ultrasound transmitter element is designed and arranged such that it applies an ultrasound measurement signal to two or more of the ultrasound receiver elements.Type: ApplicationFiled: April 26, 2013Publication date: November 21, 2013Inventors: LARS ZWERGER, WOLFGANG KRAUTH, GÜNTER FRANZ
-
Publication number: 20120208445Abstract: The invention relates to a fan motor in a ventilator for an interior ventilation system of a motor vehicle, comprising a first part having a plurality of radially aligned coils and a second part rotatably supported relative to the first part and having a plurality of radially aligned permanent magnets, wherein a concentric ring gap is formed between coils of the first part and permanent magnets of the second part, and the coils are air-core coils.Type: ApplicationFiled: June 4, 2010Publication date: August 16, 2012Applicant: ROBERT BOSCH GMBHInventors: Andreas Schiel, Wolfgang Krauth, Matthias Ludwig
-
Publication number: 20120192652Abstract: A device for detecting a selvage of a material web or the selvage position in one measuring direction. The device comprises at least one ultrasonic sensor, with the ultrasonic sensor comprising a transmitter element and a receiver element. The external contour of at least one of the transmitter elements and/or of the receiver elements comprises at least one arc segment side and at least one flattened side.Type: ApplicationFiled: March 23, 2011Publication date: August 2, 2012Applicant: TEXMAG GMBH VERTRIEBSGESELLSCHAFTInventors: Wolfgang Krauth, Lars Zwerger
-
Patent number: 8212509Abstract: The invention relates to a method for positional recognition of a rotor of an electronically commutated electric machine, in particular an electric motor, in which a zero crossover of a voltage induced in a coil section of the rotor or stator is used for positional recognition. According to the invention, to determine the zero crossover the coil section is briefly powered down. A rotor/stator is used, comprising at least two coil sections, one of which has a lower inductance relative to the other one, and preferably only the coil section with the lower inductance is used for the positional recognition.Type: GrantFiled: August 3, 2009Date of Patent: July 3, 2012Assignee: Robert Bosch GmbHInventors: Wolfgang Krauth, Johannes Rehagen, Eike Hermann Timm
-
Publication number: 20120091852Abstract: The invention relates to an electric machine, comprising a rotor (8; 50; 76) and a stator (9; 29; 77), wherein the rotor (8; 50; 76) and/or the stator (9; 29; 77) comprise at least one laminated core (2; 11; 32; 72) having a substantially rectangular cross-section, wherein the laminated core (2; 11; 32; 72) comprises a sheet metal strip (1), wherein the sheet metal strip (1) is wound in a coil shape.Type: ApplicationFiled: January 21, 2010Publication date: April 19, 2012Applicant: ROBERT BOSCH GMBHInventors: Wolfgang Krauth, Tilo Koenig
-
Publication number: 20120043834Abstract: The invention relates to a DC motor 1 comprising a cylindrical coil carrier 7; 17 comprising wire guide element 9; 10, 12 for guiding a first winding wire 80; 180 and a second winding wire 81; 181 of an air-gap winding on both side end sections, wherein the first winding wire 80; 180 and the second winding wire 81; 181 each comprise rectangular winding segments 20; 120, wherein the rectangular winding segments 20; 120 of the second winding wire 81; 181 are disposed overlapping on the cylindrical coil carrier 7; 17 and the wire guide elements 9; 10, 12 are designed for guiding the first winding wire 80; 180 and the second winding wire 81; 181 past each other.Type: ApplicationFiled: December 14, 2009Publication date: February 23, 2012Applicant: ROBERT BOSCH GMBHInventors: Wolfgang Krauth, Tilo Koenig
-
Publication number: 20110260665Abstract: The invention relates to a method for positional recognition of a rotor of an electronically commutated electric machine, in particular an electric motor, in which a zero crossover of a voltage induced in a coil section of the rotor or stator is used for positional recognition. According to the invention, to determine the zero crossover the coil section is briefly powered down. A rotor/stator is used, comprising at least two coil sections, one of which has a lower inductance relative to the other one, and preferably only the coil section with the lower inductance is used for the positional recognition.Type: ApplicationFiled: August 3, 2009Publication date: October 27, 2011Inventors: Wolfgang Krauth, Johannes Rehagen, Eike Hermann Timm
-
Patent number: 8013491Abstract: The invention relates to a stator (1) for an electric drive motor having a number of stator teeth separated by grooves, wherein the stator teeth are wound by a multi-strand winding, and wherein one strand comprises several coils (5, 6), and wherein individual coils (5) each comprise multiple stator teeth, and preferably multiple stator teeth are combined at the height of their tooth necks into a collective stator tooth (4) having a tooth base (3) and multiple tooth heads (2), characterized in that two stator teeth each are combined into a collective stator tooth (4).Type: GrantFiled: August 2, 2007Date of Patent: September 6, 2011Assignee: Robert Bosch GmbHInventors: Wolfgang Krauth, Eike Hermann Timm
-
Publication number: 20100181862Abstract: The invention relates to a stator (1) for an electric drive motor having a number of stator teeth separated by grooves, wherein the stator teeth are wound by a multi-strand winding, and wherein one strand comprises several coils (5, 6), and wherein individual coils (5) each comprise multiple stator teeth, and preferably multiple stator teeth are combined at the height of their tooth necks into a collective stator tooth (4) having a tooth base (3) and multiple tooth heads (2), characterized in that two stator teeth each are combined into a collective stator tooth (4).Type: ApplicationFiled: August 2, 2007Publication date: July 22, 2010Applicant: ROBERT BOSCH GMBHInventors: Wolfgang Krauth, Eike Hermann Timm
-
Publication number: 20100052586Abstract: The invention relates to a detector circuit for detecting a change in voltage at a terminal or node with respect to a reference potential. The detector circuit comprises an electronic switch with a control terminal, which has a predetermined switching potential at which the switch operates, and with a detection signal output for outputting a detection signal, and a voltage matching circuit, which provides a control potential at the control terminal of the switch which corresponds to a potential of the terminal which has changed by a predetermined, fixed potential absolute value. The predetermined fixed potential absolute value is selected in such a way that the control potential corresponds to the switching potential or approximately to the switching potential when the reference voltage is applied to the terminal in such a way that the change in voltage to be detected causes the switching potential of the electronic switch to be exceeded or undershot.Type: ApplicationFiled: October 16, 2007Publication date: March 4, 2010Inventors: Wolfgang Krauth, Gerhard Knecht
-
Patent number: 7151715Abstract: A method and an apparatus (1) are used to detect the position of the edge (2) of a moving product web (3). The apparatus (1) has piezoelectric elements (5), which firstly output ultrasonic pulses (10) and secondly pick them up and convert them into an electrical signal. The product web (3) is arranged between the piezoelectric elements (5) and a reflector (11) for this purpose. If the product web (3) is located in the measurement range of the piezoelectric element (5), it attenuates the ultrasonic pulses as a result of reflection or absorption during the double passage of the latter. The position of the product web edge (2) is calculated from this attenuation.Type: GrantFiled: August 13, 2004Date of Patent: December 19, 2006Assignee: Erhardt & Leimer GmbHInventors: Juergen Eisen, Wolfgang Krauth, Hang Seibold
-
Publication number: 20050034520Abstract: A method and an apparatus (1) are used to detect the position of the edge (2) of a moving product web (3). The apparatus (1) has piezoelectric elements (5), which firstly output ultrasonic pulses (10) and secondly pick them up and convert them into an electrical signal. The product web (3) is arranged between the piezoelectric elements (5) and a reflector (11) for this purpose. If the product web (3) is located in the measurement range of the piezoelectric element (5), it attenuates the ultrasonic pulses as a result of reflection or absorption during the double passage of the latter. The position of the product web edge (2) is calculated from this attenuation.Type: ApplicationFiled: August 13, 2004Publication date: February 17, 2005Inventors: Juergen Eisen, Wolfgang Krauth, Hang Seibdld
-
Patent number: 6775469Abstract: An electronically commutatable motor having field windings activatable in sequence with a commutation frequency via semiconductor output stages using control signals connectable and disconnectable from a direct voltage supply, the control signals being clocked using pulse width modulation. Noise generation from connection and disconnection of the current applied to field windings is minimized by flattening of the rising and/or falling edges of the current in the field windings. The pulse width ratio increases in the rising edges of the control signals from a low initial value to an operating value assigned to the setpoint as a function of a selected setpoint for the motor speed or output, and, in the falling edges of the control signals, the pulse width ratio starts from the existing operating value and is reduced to a lower final turn-off value as a function of the existing actual value of the speed or the output of the motor.Type: GrantFiled: August 27, 2002Date of Patent: August 10, 2004Assignee: Robert Bosch GmbHInventors: Volker Lurk, Joerg Sutter, Wolfgang Krauth, Wolfgang Schwenk, Claude Berling
-
Patent number: 6741046Abstract: A method is for starting a sensorless and brushless direct current motor, the stator windings of which are supplied with power from a multiphase converter circuit. For starting the motor, it is first rotated into a defined starting position in an alignment operation through simultaneous energization of at least two phases. Then in a second phase, an energization state of the stator windings which is in the desired direction of rotation and provides sufficient torque is initiated, whereupon then the additional energization states of the corresponding phases follow cyclically, and the rotor is rotated in synchronization with the applied stator rotational field. The motor may be used in a motor vehicle and supplied with the battery voltage at the input terminals. In an example embodiment, the current supplied in the alignment is adjusted according to the battery voltage, and in addition, it is increased according to a specified waveform.Type: GrantFiled: September 19, 2002Date of Patent: May 25, 2004Assignee: Robert Bosch GmbHInventors: Wolfgang Krauth, Wolfgang Schwenk
-
Patent number: 6506034Abstract: A fluid pump, in particular for the coolant and heating system of a motor vehicle, has a stator (21) of claw pole construction and a rotor (6), separated from the stator (21) by a pipe (11), which is immersed in the coolant and forms a vane wheel. The rotor (6) is disposed radially inside the stator (21).Type: GrantFiled: March 19, 2001Date of Patent: January 14, 2003Assignee: Robert Bosch GmbHInventors: Gerd Lentz, Christoph Heier, Matthias Henschel, Wolfgang Krauth