Thomson coil driven switch assembly with lightweight plunger

    公开(公告)号:US11004641B2

    公开(公告)日:2021-05-11

    申请号:US16404050

    申请日:2019-05-06

    Applicant: ABB Schweiz AG

    Abstract: An electrical switch assembly includes a contact element to be moved towards a further contact element for generating an electrical connection; and a drive for moving the contact element; wherein the drive includes a plunger with a connection member interconnected with the contact element; wherein the plunger includes a mechanical structure with a top side to which the connection member is connection, and a bottom side opposite to the top side; wherein the drive includes a Thomas coil for moving the plunger via an electrically conducting top face, which is provided on the top side and an electrically conducting bottom face, which is provided on the bottom side. The mechanical structure includes at least one channel between the top side and the bottom side, the at least one channel extending transverse to a movement direction of the plunger. Furthermore, the mechanical structure fills less than 50% of a volume between the top side and the bottom side.

    METHOD FOR PRODUCING A MAGNETIC POWDER

    公开(公告)号:US20210316365A1

    公开(公告)日:2021-10-14

    申请号:US17126230

    申请日:2020-12-18

    Applicant: ABB Schweiz AG

    Abstract: The present disclosure provides a method for producing a magnetic powder and the use of a waste magnetic material for producing isotropic or anisotropic magnets. The method comprises providing a waste magnetic material comprising a waste magnetic chemical composition, analyzing the waste magnetic material to obtain information about the waste magnetic chemical composition thereof, adjusting the waste magnetic chemical composition to a target magnetic chemical composition to obtain an adjusted waste magnetic material, and atomizing the adjusted waste magnetic material to obtain the magnetic powder.

Patent Agency Ranking