Patents by Inventor Markus Heckmann
Markus Heckmann 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: 8167689Abstract: The invention is based on a system with a tool-holding fixture, which fixture has a slaving device (12) by way of which an inserted tool (14) can be connected operatively to a drive shaft (16), and with an inserted tool (14) which can be connected operatively to the slaving device (12) via at least one detent element (20) that is supported movably counter to a spring element (18), which detent element snaps into place in an operating position of the inserted tool (14) and fixes the inserted tool (14) by positive engagement. It is proposed that the tool-holding fixture and the inserted tool (14) have at least two corresponding shaped elements (22, 24), adapted to one another, to facilitate installation of the inserted tool (14).Type: GrantFiled: April 2, 2003Date of Patent: May 1, 2012Assignees: Robert Bosch GmbH, Tyrolit Schleigmitel Swarowski K.G.Inventors: Albrecht Hofmann, Harald Krondorfer, Markus Heckmann, Thomas Schomisch
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Patent number: 8134297Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.Type: GrantFiled: August 30, 2006Date of Patent: March 13, 2012Assignee: Osram AGInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Patent number: 8096857Abstract: A power tool, in particular a right-angle grinder, includes a motor and a gear, the motor and/or the gear embodied as a mountable function module. The gear is embodied as a mountable function module, with a gear input shaft supported in a gearbox, and the gear input shaft is fixed in the gearbox via at least one detent connection.Type: GrantFiled: June 6, 2003Date of Patent: January 17, 2012Assignee: Robert Bosch GmbHInventors: Albrecht Hofmann, Harald Krondorfer, Markus Heckmann, Kersten Heckmann, legal representative, Thomas Schomisch
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Publication number: 20110279941Abstract: A circuit arrangement with two semiconductor switches connected in series between a first potential connection and a second potential connection is provided. The circuit arrangement may include an inductive element connected in series between the two potential connections and by elements of an action chain of such a nature that, under predefined conditions, a voltage drop across the inductive element effects the switching off of at least one of the semiconductor switches.Type: ApplicationFiled: November 5, 2008Publication date: November 17, 2011Applicant: OSRAM Gesellschaft mit beschraenkter HaftungInventor: Markus Heckmann
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Patent number: 7967079Abstract: A portable power tool includes a motor housing (22a, 22b, 22c, 22d, 68) and a housing cover (26a, 26b, 26c, 26d, 72) that is attached to the motor housing (22a, 22b, 22c, 22d, 68). The portable power tool includes insulation (44a, 44b, 44c, 44d, 70a, 70b) adjacent to the motor housing (22a, 22b, 22c, 22d, 68) and the housing cover (26a, 26b, 26c, 26d, 72), which are guided through a guide (50a, 50b, 50c, 50d, 52a, 52b, 52d, 92) in the direction toward the motor housing (22a, 22b, 22c, 22d, 68) and/or the housing cover (26a, 26b, 26c, 26d, 72).Type: GrantFiled: February 13, 2006Date of Patent: June 28, 2011Assignee: Robert Bosch GmbHInventors: Peter Stierle, Albrecht Hofmann, Juergen Wiker, Mario Pauli, Stefan Heess, Thomas Schomisch, Meinhard Eule, Markus Heckmann, Kersten Heckmann, legal representative
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Publication number: 20110097978Abstract: The invention is based on a system with a tool-holding fixture, which fixture has a slaving device (12) by way of which an inserted tool (14) can be connected operatively to a drive shaft (16), and with an inserted tool (14) which can be connected operatively to the slaving device (12) via at least one detent element (20) that is supported movably counter to a spring element (18), which detent element snaps into place in an operating position of the inserted tool (14) and fixes the inserted tool (14) by positive engagement. It is proposed that the tool-holding fixture and the inserted tool (14) have at least two corresponding shaped elements (22, 24), adapted to one another, to facilitate installation of the inserted tool (14).Type: ApplicationFiled: April 2, 2003Publication date: April 28, 2011Inventors: Albrecht Hofmann, Harald Krondorfer, Markus Heckmann
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Patent number: 7828185Abstract: The invention relates to a hand power tool (2), having a housing (6), an electric motor accommodated in the housing (6), and a battery pack (4), releasably locked to the housing (6), for supplying the electric motor with electric current. At least one spring/damping element (38), mounted between the battery pack (4) and the housing (6) of the hand power tool (2), is provided, for damping vibration and -or eliminating a locking-dictated play between the battery pack (4) and the housing (6).Type: GrantFiled: December 11, 2003Date of Patent: November 9, 2010Assignee: Robert Bosch GmbHInventors: Albrecht Hofmann, Harald Krondorfer, Markus Heckmann, Kersten Heckmann, legal representative, Joachim Schadow, Thomas Schomisch
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Patent number: 7786683Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.Type: GrantFiled: June 27, 2006Date of Patent: August 31, 2010Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20100213848Abstract: A detect method is provided for performing step dimming selection in an electronic ballast including an End of Lamp Life detect circuit and a half-bridge inverter, the End of Lamp Life detect circuit being connected to an input terminal of the control circuit, wherein each time when the power switch is turned on, it is judged whether the electronic ballast should enter the dimming mode or not by detecting the voltage at the input terminal of the control circuit before the half-bridge inverter starts operating.Type: ApplicationFiled: June 12, 2008Publication date: August 26, 2010Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNGInventors: Wei Gao, Markus Heckmann, Rene Twardzik, Yanshun Xue
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Publication number: 20100156299Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.Type: ApplicationFiled: August 30, 2006Publication date: June 24, 2010Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Patent number: 7456578Abstract: A circuit arrangement has a drive circuit for a lamp having a first connection for a first filament of the lamp and a second connection for a second filament of the lamp, a protective circuit, coupled on the output side to the drive circuit and on the input side to the first connection for the first filament and the second connection for the second filament such that a first signal correlated with an operational parameter of the first filament, and a second signal, correlated with an operational parameter of the second filament, can be transmitted to the protective circuit. The arrangement also includes a modification apparatus connected between the protective circuit and the first connection and/or the second connection, the apparatus designed to modify the first signal and/or the second signal and to make them available to the protective circuit as a modified first signal and/or a modified second signal.Type: GrantFiled: January 27, 2006Date of Patent: November 25, 2008Assignee: Patent-Treuhand-Gesellschaft fur Ellectrische Gluhlampen mbHInventors: Markus Heckmann, Thomas Siegmund
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Patent number: 7420334Abstract: An electronic ballast for a lamp having a bridge circuit, includes at least one first switch and a second switch coupled between a connection for a supply voltage and a connection for a ground potential, a center point of the bridge circuit between the first switch and second switches; a first and a second connection for a lamp the first connection coupled to the center point; and a signal evaluation unit. The evaluation unit includes a first input coupled to a signal which is at the DC voltage level of the first connection, and second input coupled to a signal which is at the DC voltage level of the second connection, the DC voltage reference potential for the evaluation unit being designed to be variable within a value range which is greater than or equal to the ground potential and is less than or equal to the supply voltage potential.Type: GrantFiled: April 13, 2006Date of Patent: September 2, 2008Assignee: Patent-Treuhand-Gesellschaft für Glühlampen mbHInventor: Markus Heckmann
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Publication number: 20080099224Abstract: The invention relates to a hand power tool (2), having a housing (6), an electric motor accommodated in the housing (6), and a battery pack (4), releasably locked to the housing (6), for supplying the electric motor with electric current. At least one spring/damping element (38), mounted between the battery pack (4) and the housing (6) of the hand power tool (2), is provided, for damping vibration and -or eliminating a locking-dictated play between the battery pack (4) and the housing (6).Type: ApplicationFiled: December 11, 2003Publication date: May 1, 2008Applicant: ROBERT BOSCH GMBHInventors: Albrecht Hofmann, Harald Krondorfer, Markus Heckmann, Kersten Heckmann, Joachim Schadow, Thomas Schomisch
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Patent number: 7352079Abstract: An electronic ballast for a lamp has a DC voltage connection; a switching unit having a supply voltage with the DC voltage connection being coupled thereto, and a first capacitor coupled between the supply voltage connection and a reference potential; an AC voltage connection, at which a voltage can be made available which has at least one AC component. The series circuit includes a first nonreactive resistor and a first diode, as a second nonreactive resistor coupled between the AC voltage connection and the supply voltage connection, a connection point between the first diode and the second nonreactive resistor, and a second capacitor coupled between the connection point and the reference potential. The first capacitor and the second nonreactive resistor are dimensioned such that the average voltage drop across the second nonreactive resistor is greater than or equal to the average voltage drop across the first capacitor.Type: GrantFiled: April 13, 2006Date of Patent: April 1, 2008Assignee: Patent-Treuhand-Gesellscaft für Elektrische Glühlampen mbHInventors: Markus Heckmann, Alfons Lechner, Thomas Siegmund
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Patent number: 7327094Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.Type: GrantFiled: July 6, 2006Date of Patent: February 5, 2008Assignee: Patent-Treuhand-Gesellschaft fur Elektrische Gluhlampen mbHInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Patent number: 7309963Abstract: The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.Type: GrantFiled: June 20, 2006Date of Patent: December 18, 2007Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Patent number: 7279848Abstract: An electronic ballast for a lamp having a bridge circuit, includes at least one first switch and a second switch, a center point of the bridge circuit between the first and second switch, the center point coupled on one side to a reference potential via the series circuit including a first capacitor and a diode and on the other side to a first connection for the lamp via an inductance; a control unit for driving the first and second switches. The control unit has a supply connection coupled to the connection point between the first capacitor and the diode, the voltage across the supply connection being limited in terms of its amplitude, and having a measurement signal input for feeding a measurement signal to the control unit; the measurement signal input being coupled to the connection point between the first capacitor and the diode.Type: GrantFiled: April 13, 2006Date of Patent: October 9, 2007Assignee: Patent-Treuhand-Gesellschaft fūr Elektrische Glühlampen mbHInventors: Markus Heckmann, Thomas Pollischansky
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Publication number: 20070210719Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.Type: ApplicationFiled: June 27, 2006Publication date: September 13, 2007Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20070018592Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.Type: ApplicationFiled: July 6, 2006Publication date: January 25, 2007Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
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Publication number: 20060290299Abstract: A circuit arrangement for operating at least one LED and at least one electric lamp having at least one first filament and one second filament, includes first and second terminals for the corresponding filaments; and a lamp supply unit supplying power to the electric lamp; it also including an LED supply unit coupled to the second terminal for the second filament of the electric lamp and designed to supply power to the at least one LED. Also described is an operating method for the circuit arrangement operating at least one LED and at least one electric lamp as described. The circuit arrangement also includes an LED supply unit, which is coupled to the second terminal for the second filament of the electric lamp and supplies power to the at least one LED.Type: ApplicationFiled: June 27, 2006Publication date: December 28, 2006Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni