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WORKING UNIT EQUIPPED WITH A DEVICE FOR CONTACTLESS ELECTRICITY TRANSFER AND METHOD FOR CONTACTLESS ELECTRICITY TRANSFER IN A WORKING UNIT

  • US 20170140869A1
  • Filed: 05/22/2015
  • Published: 05/18/2017
  • Est. Priority Date: 05/23/2014
  • Status: Abandoned Application
First Claim
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1. A working unit defining a stationary part and a part movable relative to the stationary part, and having a working device in the movable part and forming an electrical user device, an electricity supply, in the stationary part and configured for generating a high frequency variable electricity supply, and a contactless electricity transfer device comprising:

  • a stationary core made of ferromagnetic material, connected to the stationary part of the working unit;

    a first winding, wound on the stationary core and connected to the electricity supply;

    a movable core made of ferromagnetic material, connected to the movable part of the working unit;

    a second winding, wound on the movable core and connected to the working device for powering it,wherein the stationary and movable cores are coupled, in such a way that a first current circulating in the first winding generates by electromagnetic induction a second current in the second winding, so the contactless device for transferring electricity constitutes a contactless electricity supply line of the working device;

    a control element, movable as one with the working device and designed to vary a relative electrical property as a function of a parameter relative to the working device;

    the control element is connected to the electricity supply or a further electricity supply for being supplied in the absence of electricity supply dispensed to the working device.

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