Patents Assigned to Rohwedder Microtech GmbH & Co. KG
  • Patent number: 7100515
    Abstract: In a device for positioning a tool in a working area wherein two spaced parallel horizontal guide tracks are provided and a guide slide is movably supported by each guide track, a coupler link is supported on each guide slide so as to be pivotable about a vertical pivot joint axis and the coupler links are joined to each other pivotably about another joint having an axis parallel to the vertical pivot joints of the coupler links, and a spindle extends from the other joint of the coupler links in alignment with the axis thereof so as to be linearly adjustable and is provided with a tool. The spindle with the tool is position-adjustable by linear movement of the guide slides along the tracks whereby the tool supported by the coupler links which are longer than the distance between the two guide tracks can cover also areas at opposite sides of the two parallel guide tracks.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: September 5, 2006
    Assignee: Rohwedder Microtech GmbH & Co. KG
    Inventors: Manfred Burkhard Helm, Jurgen Hesselbach, Lothar Mueller, Holger Schulz, Sven Soetebier, Uwe Waeckerle
  • Patent number: 6872596
    Abstract: In a method of transferring semiconductor chips from a substantially flat wafer having an active side with a plurality of individual semiconductor chips formed thereon and a support side opposite the active side to a receiver, and the wafer is attached with its support side by way of an adhesive sheet to a support structure and is cut into segments corresponding to the individual semiconductor chips so that the semiconductor chips are individually supported on the adhesive sheet with their active sides exposed and facing away from the adhesive sheet, the support structure is moved with the individual semiconductor chips into a position wherein a particular semiconductor chip to be removed is positioned in a removal location above a receiver and the adhesive sheet is pushed downwardly at the particular semiconductor chip location so as to release the particular semiconductor chip and transfer it with the active side thereof onto the receiver.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: March 29, 2005
    Assignee: Rohwedder Microtech GmbH & Co. KG
    Inventor: Uwe Waeckerle
  • Patent number: 6823712
    Abstract: An adjusting apparatus and method for automatic setting of injectors are disclosed. The setting is carried out via accurate adjustment of the distance between an actuator and a lever element. In the process, an injector to be set is provided in the correct position in a measurement and setting station and is coupled to a pressure generating device. The setting element of the injector is then rotated in such a way that the injector switches through at a specific setting of the setting element. At the same time, the current values for the torque applied to the setting element, for the angular position of the setting element, for the exciter voltage applied to the actuator and for the pressure drop caused by the switching-through action are registered and compared with predefined parameters. If all the measured values agree with the predefined parameters, then the injector has been set correctly.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: November 30, 2004
    Assignee: Rohwedder Microtech GmbH & Co. KG.
    Inventors: Manfred Bodenmueller, Lothar Mueller, Gerhard Freiseis
  • Patent number: 6668615
    Abstract: An adjusting apparatus and method for automatic setting of injectors are disclosed. The setting is carried out via accurate adjustment of the distance between an actuator and a lever element. In the process, an injector to be set is provided in the correct position in a measurement and setting station and is coupled to a pressure generating device. The setting element of the injector is then rotated in such a way that the injector switches through at a specific setting of the setting element. At the same time, the current values for the torque applied to the setting element, for the angular position of the setting element, for the exciter voltage applied to the actuator and for the pressure drop caused by the switching-through action are registered and compared with predefined parameters. If all the measured values agree with the predefined parameters, then the injector has been set correctly.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: December 30, 2003
    Assignee: Rohwedder Microtech GmbH & Co. KG
    Inventors: Manfred Bodenmueller, Lothar Mueller, Gerhard Freiseis