Patents by Inventor Peter Broghammer
Peter Broghammer 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: 7411144Abstract: An electric tool is provided, including an electric tool housing, an electric motor located in the electric tool housing, and an energy store, particularly a battery, for supplying the electric motor with energy. An actuating member for actuating a switching means for supplying the electric motor with energy is arranged in and/or on the electric tool housing. The energy store has an energy store housing, which can be fastened in and/or to the electric tool housing. The switching means is located in the energy store housing, and a transmission means which interacts with both the actuating member and the switching means, is arranged in the electric tool housing such that the movement of the actuating member is transmitted to the switching means.Type: GrantFiled: January 10, 2007Date of Patent: August 12, 2008Assignee: Marquardt GmbHInventor: Peter Broghammer
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Patent number: 7359628Abstract: The invention relates to a drive device for an electric motor, in particular for a brushless DC motor in an electrical tool, which is powered by a rechargeable battery. The drive device has at least one power semiconductor, in particular for controllable application of an electrical voltage to the electric motor, a control circuit for controlling the power semiconductor, and a mounting plate which, for example, is in the form of a printed circuit board. At least one portion of the control circuit, in particular electrical and/or electronic components as well as the conductor tracks (which connect the electrical and/or electronic components) of the control circuit, is arranged on the mounting plate. The power semiconductor is arranged on the mounting plate and/or on a mount element, which is mounted on the mounting plate.Type: GrantFiled: March 22, 2002Date of Patent: April 15, 2008Assignee: Marquardt GmbHInventors: Peter Broghammer, Daniel Hafen
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Patent number: 7313001Abstract: The invention relates to an electrical circuit arrangement (3) having electrical and/or electronic components (4). The components (4) are arranged on a mount substrate (5). The conductor tracks (6) for electrical connection of the components (4) are also located on the mount substrate (5). The mount substrate (5) comprises a metal part (7). An electrically insulating coating (9) is applied to one surface (8) of the metal part (7), to be precise in particular to that surface (8) which faces the components (4) and the conductor tracks (6). At least one component (4) and/or at least one conductor track (6) are/is located on the coating (9).Type: GrantFiled: March 22, 2002Date of Patent: December 25, 2007Assignee: Marquardt GmbHInventors: Peter Broghammer, Peter Wahl
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Publication number: 20070108035Abstract: An electric tool is provided, including an electric tool housing, an electric motor located in the electric tool housing, and an energy store, particularly a battery, for supplying the electric motor with energy. An actuating member for actuating a switching means for supplying the electric motor with energy is arranged in and/or on the electric tool housing. The energy store has an energy store housing, which can be fastened in and/or to the electric tool housing. The switching means is located in the energy store housing, and a transmission means which interacts with both the actuating member and the switching means, is arranged in the electric tool housing such that the movement of the actuating member is transmitted to the switching means.Type: ApplicationFiled: January 10, 2007Publication date: May 17, 2007Applicant: Marquardt GmbHInventor: Peter BROGHAMMER
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Publication number: 20060290306Abstract: A circuit arrangement is provided, including at least one heat-generating power component and means for monitoring the temperature of the circuit arrangement. When a preset limiting temperature is reached, the means for monitoring the temperature reduces the power of the load using the power component by reducing the load current flowing through the power component. An electric switch including such a circuit arrangement is also provided.Type: ApplicationFiled: August 29, 2006Publication date: December 28, 2006Applicant: Marquardt GmbHInventor: Peter Broghammer
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Patent number: 7140819Abstract: An adjustment device for adjusting the position of at least one cutter of a fine machining tool, particularly a reamer, with respect to a cutter support (ST) is described. To allow the cutter to be adjusted as precisely as possible, the cutter support (ST) borders at least one pressure chamber (DK) which is arranged in the adjustment direction of the cutter (S) with a displacement with respect to it and which is filled with a pressure medium which can be placed under pressure using a pressure generation device. Between the cutter (S) and the pressure chamber (DK), a cutter support wall (W) remains which is elastically deformable upon application of pressure by the pressure transfer means to adjust the cutter position.Type: GrantFiled: October 29, 2003Date of Patent: November 28, 2006Inventors: Hans-Peter Broghammer, Rolf Ehrler
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Patent number: 7121893Abstract: An electrical switch for an electric device is provided, including a contact system including at least one electrical power supply line, an electronic control circuit and an electrical connection element arranged between at least one contact face of the control circuit and the power supply line. The electrical connection element has at least one metal pin that is fixed in an electrically non-conductive fixing element such that the pin is aligned with respect to the contact face and the power supply line, and such that the pin protrudes from the fixing element on both sides thereof to contact the contact face and the power supply line.Type: GrantFiled: July 21, 2005Date of Patent: October 17, 2006Assignee: Marquardt GmbHInventors: Peter Broghammer, Peter Wahl
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Publication number: 20060009053Abstract: An electrical switch for an electric device is provided, including a contact system including at least one electrical power supply line, an electronic control circuit and an electrical connection element arranged between at least one contact face of the control circuit and the power supply line. The electrical connection element has at least one metal pin that is fixed in an electrically non-conductive fixing element such that the pin is aligned with respect to the contact face and the power supply line, and such that the pin protrudes from the fixing element on both sides thereof to contact the contact face and the power supply line.Type: ApplicationFiled: July 21, 2005Publication date: January 12, 2006Applicant: Marquardt GmbHInventors: Peter Broghammer, Peter Wahl
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Publication number: 20040191022Abstract: An adjustment device for adjusting the position of at least one cutter of a fine machining tool, particularly a reamer, with respect to a cutter support (ST) is described. To allow the cutter to be adjusted as precisely as possible, the cutter support (ST) borders at least one pressure chamber (DK) which is arranged in the adjustment direction of the cutter (S) with a displacement with respect to it and which is filled with a pressure means which can be placed under pressure using a pressure generation device. Between the cutter (S) and the pressure chamber (DK), a cutter support wall (W) remains which is elastically deformable upon application of pressure by the pressure transfer means to adjust the cutter position.Type: ApplicationFiled: October 29, 2003Publication date: September 30, 2004Applicant: DR. JORG GUHRINGInventors: Hans-Peter Broghammer, Rolf Ehrler
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Publication number: 20040112616Abstract: The invention relates to a drive device (1) for an electric motor, in particular for a brushless DC motor in an electrical tool which is powered by a rechargeable battery. The drive device (1) has at least one power semiconductor (3), in particular for controllable application of an electrical voltage to the electric motor, a control circuit (4) for controlling the power semiconductor (3), and a mounting plate (2) which, for example, is in the form of a printed circuit board. At least one portion of the control circuit (4), in particular electrical and/or electronic components (5) as well as the conductor tracks (6) (which connect the electrical and/or electronic components (5)) of the control circuit (4), is arranged on the mounting plate (2). The power semiconductor (3) is arranged on the mounting plate (2) and/or on a mount element (7) which is mounted on the mounting plate (2).Type: ApplicationFiled: September 24, 2003Publication date: June 17, 2004Inventors: Peter Broghammer, Daniel Hafen
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Publication number: 20040085740Abstract: The invention relates to an electrical circuit arrangement (3) having electrical and/or electronic components (4). The components (4) are arranged on a mount substrate (5). The conductor tracks (6) for electrical connection of the components (4) are also located on the mount substrate (5). The mount substrate (5) comprises a metal part (7). An electrically insulating coating (9) is applied to one surface (8) of the metal part (7), to be precise in particular to that surface (8) which faces the components (4) and the conductor tracks (6). At least one component (4) and/or at least one conductor track (6) are/is located on the coating (9).Type: ApplicationFiled: September 11, 2003Publication date: May 6, 2004Inventors: Peter Broghammer, Peter Wahl
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Patent number: 6555773Abstract: An electrical switch for the speed setting of an electric motor in an electrical appliance includes a movable actuator member and a blocking structure. The actuator member is movable from an initial position into a plurality of actuating positions. The blocking means can be switched over between a blocking state for blocking the movement of the actuating member and a release state for releasing the movement of the actuating member. A first blocking means acts on the actuating member in the initial position. A second blocking means acts on the actuating member in the first actuating position. An actuating element has three switching positions for switching over the two blocking means. The first blocking means is in the blocking state in the first switching position. The first blocking means is in the release state and the second blocking means is in the blocking state in the second switching position. Both blocking means are in the release state in the third switching position.Type: GrantFiled: October 4, 2000Date of Patent: April 29, 2003Assignee: Marquardt GmbHInventors: Peter Broghammer, Uwe Stratmann
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Patent number: 6551123Abstract: An electric appliance unit includes an appliance and a plug-in battery pack. The appliance has an appliance housing carrying an electric switch accommodated in a switch housing and including first electric contacts. The battery pack includes second electric contacts for engaging the first electric contacts. A first guiding arrangement guides and preliminarily centers the battery pack relative to the switch housing along a first insertion path extending to a first position to effect a coarse alignment of the first and second electric contacts upon reaching the first position. The first guiding arrangement includes a first guide component carried by the battery pack and cooperating, along the first insertion path, with a second guide component in the appliance housing.Type: GrantFiled: June 16, 1998Date of Patent: April 22, 2003Assignee: Marquardt GmbHInventors: Alois Schaeffeler, Peter Broghammer
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Patent number: 5289047Abstract: A switch, especially for use in a hand-operated storage-battery electric tool with a DC motor is proposed, in which control electronics are provided for changing the speed of the DC motor. In order to produce the switch as compactly as possible and without additional connecting lines to the power transistor and in order furthermore to influence positively the heat budget inside the switch, a contact system (5) and a freewheeling diode (8) are pivoted to a common bearing plate (11) which is connected in current-carrying and heat-conducting fashion via a connecting bolt (12) to a power transistor (7) on the housing. In this arrangement, the power transistor is cooled by a heat sink provided on the switch housing.Type: GrantFiled: May 7, 1992Date of Patent: February 22, 1994Assignee: Marquart GmbHInventor: Peter Broghammer