Patents by Inventor Kuikui Zhu

Kuikui Zhu 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).

  • Tulip contact and electrical contact system for switching device
    Patent number: 8641437
    Abstract: A tulip contact comprises a plurality of outer contact fingers and inner contact fingers. The outer contact fingers forming a shape of the outer surface of fixed contact in order to make the contact surface of each of these fingers contact with the outer surface of fixed contact. The inner contact fingers forming a shape of the inner surface of fixed contact in order to make the contact surface of each of these fingers contact with the inner surface of fixed contact. Each said contact finger comprises a first contact bulge for contacting with the surfaces of the fixed contact, and a second contact bulge for contacting with the bushing. And each said contact bulge comprises a contact slot on its surface. The first contact bulges of the outer contact fingers are not at the same cross section with the first contact bulges of the inner contact fingers.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: February 4, 2014
    Assignee: ABB Technology Ltd.
    Inventors: Zhanwei Tu, Kuikui Zhu, Yurong Lv
  • TULIP CONTACT AND ELECTRICAL CONTACT SYSTEM FOR SWITCHING DEVICE
    Publication number: 20120129374
    Abstract: A tulip contact comprises a plurality of outer contact fingers and inner contact fingers. The outer contact fingers forming a shape of the outer surface of fixed contact in order to make the contact surface of each of these fingers contact with the outer surface of fixed contact. The inner contact fingers forming a shape of the inner surface of fixed contact in order to make the contact surface of each of these fingers contact with the inner surface of fixed contact. Each said contact finger comprises a first contact bulge for contacting with the surfaces of the fixed contact, and a second contact bulge for contacting with the bushing. And each said contact bulge comprises a contact slot on its surface. The first contact bulges of the outer contact fingers are not at the same cross section with the first contact bulges of the inner contact fingers.
    Type: Application
    Filed: August 12, 2009
    Publication date: May 24, 2012
    Applicant: ABB TECHNOLOGY LTD.
    Inventors: Zhanwei Tu, Kuikui Zhu, Yurong Lv