Patents by Inventor Thoung Huy Phung

Thoung Huy Phung 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).

  • Publication number: 20020109570
    Abstract: An electromagnetic contactor that provides accurate contactor status indication regardless of the contact position. The primary contacts are secured within reversible contact modules. A contact carrier first end provides accurate local contact position indication. Auxiliary contacts toggled by the operator provide accurate control system status indication. The operator includes a stem with two sets of abutments that cooperatively engage the contact carrier. A catch located at the contact carrier second end and an abutment lip attach if the moveable contacts are welded shut. The operator status is prevented from changing thus insuring the accuracy of the contact position feedback. The contact modules can be installed in the electromagnetic contactor without the use of tools.
    Type: Application
    Filed: February 15, 2001
    Publication date: August 15, 2002
    Inventors: Madhu Sudan, M. Natarajan, A. Ramadevi, Anilkumar D. Pandit, K.V. Sridhar, Joseph P. Smith, Thoung Huy Phung