Patents by Inventor Ernst Bühler

Ernst Bühler 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).

  • Method and device for stretching and/or separating wires
    Patent number: 8129650
    Abstract: The methods and devices enable a reliable and rapid automatic threading process on spark-erosive wire-cutting machines with closed round guides without complicated entry of parameters. A heat-output control device with an optimized output characteristic curve is supplied from a DC voltage source of the erosion generator. Through an at least partial feedback loop of heating current and source voltage, the characteristic curve is modified in such a way that different wire types or different annealing lengths for the wire provide optimal results for stretching, straightening and separating the wire electrode without controlled intervention. With adaptive control it is possible to thread future wire types automatically without reprogramming.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: March 6, 2012
    Assignee: Agie Charmilles SA
    Inventors: Ernst Bühler, Dante Scricciolo
  • Circuit board unit and method for production thereof
    Patent number: 7948758
    Abstract: The invention relates to a circuit board unit and a method for production thereof. The circuit board unit comprises a circuit board topmost laminate with conductive tracks on the upper side for mounting surface-mountable devices. The circuit board topmost laminate features a thickness dimensioned such that the anticipated heat dissipated by the surface-mountable devices is transported from the upper side to the underside of the circuit board laminate to good effect. The circuit board unit further comprises an electrically insulating laminate arranged under the circuit board topmost laminate, inserts made of a material with good heat conductivity and electrical insulation embedded in the electrically insulating laminate at sites below surface-mountable devices with high heat dissipation, and a cooling plate arranged below the electrically insulating laminate and the inserts.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: May 24, 2011
    Assignees: Agie Charmilles SA, Charmilles Technologies SA
    Inventors: Ernst Bühler, Rino D'Amario, Reto Knaak
  • Devices and methods for detecting a processing electrode of a machine tool
    Patent number: 6707304
    Abstract: Devices and methods are disclosed for the contactless detection of a bar-shaped or wire-shaped processing electrode of a machine tool such as a spark erosion machine. The detection is based on measuring an impedance change in the measuring area, which is caused by the processing electrode moving through the measuring area. The impedance change is measured by one or more measuring electrodes disposed in the measuring area.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: March 16, 2004
    Assignee: Agie SA
    Inventors: Ernst Bühler, Juri Cugini, Karl Tobler, Walter Dal Bò