Patents by Inventor Luca Lienhard

Luca Lienhard 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).

  • Electrical medium or high voltage switching device
    Patent number: 9627153
    Abstract: An electrical switching device for medium or high voltage circuits having at least a nominal contact arrangement, wherein the nominal contact arrangement includes at least a first nominal contact including a plurality of contact fingers forming a finger cage concentric with respect to a longitudinal axis, wherein the contact fingers are separated from one another by empty slots extending up to a free end of the contact fingers. The empty slots include first and second empty slots, wherein the second empty slots are shorter than the first empty slots, and wherein the contact fingers are grouped in groups, with the contact fingers of each group being separated by second empty slots and the contact fingers of adjacent groups being separated by first empty slots.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: April 18, 2017
    Assignee: ABB Schweiz AG
    Inventors: Francesco Pisu, Helmut Heiermeier, Jadran Kostovic, Jakub Korbel, Luca Lienhard, Reto Karrer, Timothy Sutherland
  • Electrical Medium Or High Voltage Switching Device
    Publication number: 20140131183
    Abstract: An electrical switching device for medium or high voltage circuits having at least a nominal contact arrangement, wherein the nominal contact arrangement includes at least a first nominal contact including a plurality of contact fingers forming a finger cage concentric with respect to a longitudinal axis, wherein the contact fingers are separated from one another by empty slots extending up to a free end of the contact fingers. The empty slots include first and second empty slots, wherein the second empty slots are shorter than the first empty slots, and wherein the contact fingers are grouped in groups, with the contact fingers of each group being separated by second empty slots and the contact fingers of adjacent groups being separated by first empty slots.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 15, 2014
    Inventors: Francesco Pisu, Helmut Heiermeier, Jadran Kostovic, Jakub Korbel, Luca Lienhard, Reto Karrer, Timothy Sutherland