Patents Assigned to Marquardt GmbH
  • Patent number: 7764502
    Abstract: A control device, in particular an electrical switch for use for an electrical tool such as a rechargeable-battery and/or plug-powered electrical tool having an electric motor. The switch has a housing for holding at least one heat-generating component such as a power transistor, a MOSFET, a triac or the like, which is arranged in particular in an electrical circuit arrangement which, for example, is used for open-loop and/or closed-loop control of the electric motor by appropriate open-loop and/or closed-loop control of the electrical load current flowing through the component to the electric motor. A means for thermal conduction is connected on the one hand to the housing of the electrical switch, and/or to the heat-generating component, in particular to the power semiconductor which is located in the housing, and on the other hand to a cooled area which is associated with the switch.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: July 27, 2010
    Assignee: Marquardt GmbH
    Inventors: Tino Erb, Dirk Pfeiffer, Klaus Fiederer
  • Patent number: 7709781
    Abstract: A process and a device are provided for ascertaining the rotation of a liquid spray arm for a domestic appliance. Lighting means serves as a light transmitter and a photoreceiver serves as a light receiver. The lighting means and the photoreceiver are assigned a light-conducting element. At a first location of the light-conducting element, at least some light emitted from the lighting means is coupled to a path so that the light is guided in the light-conducting element by total reflection. At a second location of the light-conducting element that spaced apart from the first location in the direction of propagation of the light, the light guided in the light-conducting element is coupled out of the path so that the light is received by the photoreceiver. The intensity of the light received by the photoreceiver is evaluated by an evaluation circuit with respect to the rotation of the spray arm.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: May 4, 2010
    Assignee: Marquardt GmbH
    Inventors: Dietmar Weisser, Guido Schick, Heinrich Müller, Wolfgang Häussler, Michael Bessler
  • Patent number: 7667571
    Abstract: A locking system for providing authorization to access and drive a motor vehicle has a first control device for unlocking and locking the car doors, the ignition lock, the steering wheel lock, etc. Additionally, the locking system has a second device, which is an electronic key or an identifier. The two devices have transmission means and/or receiving means for electromagnetic signals with frequencies ? lying in a frequency band between two cut-off frequencies ?a, ?b. At least one of the signals, transmitted between the devices, is a coded operating signal for authenticating the second device. The actual frequency ?i with which the transmission means of the second device is operated is stored in a storage means of the first device.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: February 23, 2010
    Assignee: Marquardt GmbH
    Inventors: Karl Mueller, Johannes Mattes, Uwe Hipp, Dietmar Weisser, Michael Geber, Markus Ruther, Andreas Pohlmann, Matthias Reinhardt
  • Patent number: 7617708
    Abstract: An ignition lock for a motor vehicle includes a carrier element for holding an ignition key that is inserted in the ignition lock. The carrier element is movable along a longitudinal axis of the ignition lock. The carrier element pushes a slide bar from a blocking position to an unblocking position when the carrier element moves along the longitudinal axis. A latch bar, when in its latching position, restricts a movement of the carrier element along the longitudinal axis and, when in its unlatching position, allows the carrier element to move along the longitudinal axis. When the latch bar is in its unlatching position and the slide bar is in its blocking position, the slide bar prevents the latch bar from moving from the unlatching position to the latching position.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: November 17, 2009
    Assignees: Volkswagen AG, Marquardt GmbH
    Inventors: Hans-Joachim Frohne, Ralf Borngräber, Steffen Buhl, Dennis Meβmer, Thomas Schwarz
  • Publication number: 20090272637
    Abstract: The invention relates to an electrical switch, in particular in the form of a microswitch and/or snap-action switch, having a housing which comprises a base and a cover. The switch has a contact system, which comprises a movable switching contact and at least one stationary contact. Furthermore, the switch has a moving operating member for switching of the contact system. The cover is mounted on the base such that it can move, and the operating member is formed by the cover.
    Type: Application
    Filed: April 29, 2009
    Publication date: November 5, 2009
    Applicant: Marquardt GmbH
    Inventors: Immanuel Aichele, Thomas Kugler, Heinrich Muller
  • Publication number: 20090213545
    Abstract: A control device, in particular an electrical switch for use for an electrical tool such as a rechargeable-battery and/or plug-powered electrical tool having an electric motor. The switch has a housing for holding at least one heat-generating component such as a power transistor, a MOSFET, a triac or the like, which is arranged in particular in an electrical circuit arrangement which, for example, is used for open-loop and/or closed-loop control of the electric motor by appropriate open-loop and/or closed-loop control of the electrical load current flowing through the component to the electric motor. A means for thermal conduction is connected on the one hand to the housing of the electrical switch, and/or to the heat-generating component, in particular to the power semiconductor which is located in the housing, and on the other hand to a cooled area which is associated with the switch.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 27, 2009
    Applicant: Marquardt GmbH
    Inventors: Tino Erb, Dirk Pfeiffer, Klaus Fiederer
  • Patent number: 7579934
    Abstract: The invention relates to a power breaker for switching electrical loads having a parallelepipedal shape having four longitudinal sides lying in the longitudinal direction (LQ) of the parallelepiped, a first transverse side and an opposing second transverse side, an electromagnetic coil having a longitudinal axis (LS), an input connection, an output connection, and a moving contact path that is electrically connected to the input connection or the output connection. The invention also relates to power supply assembly arrangement for switching an electrical current between an external power supply line and at least one load where the moving contact path and the coil are arranged longitudinally parallel to one another in the longitudinal direction (LQ) of the parallelepipedal shape.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: August 25, 2009
    Assignee: Marquardt GmbH
    Inventor: Heinrich Müller
  • Publication number: 20090200961
    Abstract: An electric appliance having a main electric load, an auxiliary electric load, and a voltage supply for operating both electric loads. An auxiliary voltage is generated by the voltage supply and supplied to the auxiliary electric load at a constant level so that the power of the auxiliary electric load remains substantially the same irrespective of voltage fluctuations in the voltage supply.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 13, 2009
    Applicant: Marquardt GmbH
    Inventor: Christian STRAUB
  • Patent number: 7549685
    Abstract: A lock for a household appliance, such as a tumble drier, a washing machine, a dishwasher or the like, has a movable retaining element. The movable retaining element is configured in the style of a slider for interaction with a locking bar located on a door, a lid, a hinged opening or the like of the household appliance. The lock has a two-state locking mechanism for the retaining element, such that the locking mechanism in a first state blocks the movement of the retaining element and in a second state frees the movement of the retaining element. The locking mechanism can be electromagnetically controlled between the two states.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: June 23, 2009
    Assignee: Marquardt GmbH
    Inventors: Heinrich Mueller, Manfred Lonau
  • Publication number: 20090133453
    Abstract: An electric steering lock for a drive authorization system in a motor vehicle, including a movable locking element which, according to a first position, can be brought into locking engagement with a latched-in position on the steering shaft in the steering wheel column and, according to a second position, can be brought out of locking engagement with said position. The steering lock also has a drive for moving the locking element between the two positions, and electronics for controlling the drive. The system may have an associated second device in the form of an electronic key, an identification (ID) transmitter, a chip card or the like, with the result that, when the second device is authorized, the drive can be controlled into the respective position by the electronics. The electronics generate those signals which are used to trigger functions which can otherwise be effected by an electric ignition lock.
    Type: Application
    Filed: October 16, 2008
    Publication date: May 28, 2009
    Applicants: Marquardt GmbH, Volkswagen AG
    Inventors: Karl Mueller, Gerd Stauss, Ralf Maier, Andreas Titze, Ralf Borngraber, Dietmar Grave, Andreas Thiele, Klaus Revermann
  • Patent number: 7485824
    Abstract: An electrical switch, in the form of a short-stroke key is provided, including a housing having a base and a cover fixed to the base. A contact system is located in the housing, and an actuating member acts on the contact system in a switching manner. The base has a cutout in the underside that is positioned remote from the cover. The cover at least partially covers the base on the upper side and on the side face of the base, and an attachment on the cover engages the cutout in a flange manner such that the attachment is accommodated in the base and is at the most flush with the underside of the base.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: February 3, 2009
    Assignees: Marquardt GmbH, DaimlerChrysler AG
    Inventors: Axel Rastemborski, Bernd Hellbeck
  • Publication number: 20090026052
    Abstract: The invention relates to an electrical switch for an electrical appliance, in particular for an electrical tool, such as a drill, a grinder, a saw, a plane, an angle grinder or the like, and having a housing. The switch has a contact system which is located in the housing, and electrical connections, which lead into the housing and/or are located in the housing, for electrical supply lines to the contact system. Furthermore, the switch may have an operating member for switching action on the contact system, with the contact system being operatively connected to the operating member by means of an elastic element. The electrical connections have seals.
    Type: Application
    Filed: August 8, 2008
    Publication date: January 29, 2009
    Applicant: Marquardt GmbH
    Inventors: Alfons Steidle, Klaus Fiederer
  • Patent number: 7411144
    Abstract: 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: Grant
    Filed: January 10, 2007
    Date of Patent: August 12, 2008
    Assignee: Marquardt GmbH
    Inventor: Peter Broghammer
  • Publication number: 20080185849
    Abstract: The invention relates to a closing mechanism for a mobile closing element, especially for a door, a cover, a flap or the like on a household appliance, such as a dishwasher machine, a washing machine, a refrigerator or the like, said mechanism comprising a carriage that can be displaced between a locking position and an unlocking position and is loaded by means of a spring in the direction of the locking position. The carriage carries a closing hook that can be engaged with the closing element for the closing action and/or disengaged therefrom for the opening action. A rotary latch can co-operate with the closing element during the closing action. As a result of this co-operation, said rotary latch acts on the carriage in such a way that the carriage is displaced into the locking position during the closing of the closing element by the force of the spring.
    Type: Application
    Filed: October 16, 2007
    Publication date: August 7, 2008
    Applicant: Marquardt GmbH
    Inventors: Michael HARTMANN, Dieter Hotz, Cengiz Kuecuek, Heinrich Mueller, Axel Rastemborski, Bernd Schessl, Erich Schmid, Martin Stickel
  • Publication number: 20080173798
    Abstract: A process and a device are provided-for ascertaining the rotation of a liquid spray arm for a domestic appliance. Lighting means serves as a light transmitter and a photoreceiver serves as a light receiver. The lighting means and the photoreceiver are assigned a light-conducting element. At a first location of the light-conducting element, at least some light emitted from the lighting means is coupled to a path so that the light is guided in the light-conducting element by total reflection. At a second location of the light-conducting element that spaced apart from the first location in the direction of propagation of the light, the light guided in the light-conducting element is coupled out of the path so that the light is received by the photoreceiver. The intensity of the light received by the photoreceiver is evaluated by an evaluation circuit with respect to the rotation of the spray arm.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 24, 2008
    Applicant: Marquardt GmbH
    Inventors: Dietmar Weisser, Guido Schick, Heinrich Muller, Wolfgang Haussler, Michael Bessler
  • Publication number: 20080100066
    Abstract: The invention relates to a lock, in particular for a household appliance such as a tumble drier, a washing machine, a dishwasher or the like, having a movable retaining element, which is configured in particular in the manner of a slide. The retaining element interacts with a closure hook located on a closure element, such as a door, a cover, a flap or the like of the household appliance, which can be moved between an open and a closed state. The closure hook, in the closed state of the closure element, engages into the retaining element. Here, the closure hook is held by the retaining element in contact against a blocking face in such a way that a movement of the closure element into the open state is blocked. The blocking face is designed so as to be pivotable in the manner of a positive opener.
    Type: Application
    Filed: October 24, 2007
    Publication date: May 1, 2008
    Applicant: Marquardt GmbH
    Inventors: Heinrich Mueller, Axel Rastemborski, Tobias Fischinger, Frank Rottler
  • Patent number: 7359628
    Abstract: 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: Grant
    Filed: March 22, 2002
    Date of Patent: April 15, 2008
    Assignee: Marquardt GmbH
    Inventors: Peter Broghammer, Daniel Hafen
  • Patent number: 7313001
    Abstract: 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: Grant
    Filed: March 22, 2002
    Date of Patent: December 25, 2007
    Assignee: Marquardt GmbH
    Inventors: Peter Broghammer, Peter Wahl
  • Patent number: 7242390
    Abstract: An electrical switch having a form of one of a joystick and a cursor switch is provided, including an operating element. The operating element interacts with at least one of rotation means such that the operating element can be rotated, and with movement means such that the operating element can be moved in at least one linear direction on a movement plane. The operating element has a switching effect on a switching element during rotation and/or during movement.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: July 10, 2007
    Assignee: Marquardt GmbH
    Inventors: Michael Bader, Markus Kramer
  • Publication number: 20070108035
    Abstract: 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: Application
    Filed: January 10, 2007
    Publication date: May 17, 2007
    Applicant: Marquardt GmbH
    Inventor: Peter BROGHAMMER