Patents Represented by Attorney Burns, Doane, Swecker & Mathis, PC

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  • Method of producing a PTC-resistor device
    Patent number: 6932928
    Abstract: The invention relates to a novel method of producing a resistor device comprising a PTC-polymer element 2 and a varistor element 4. Both elements are molded in a common molding process using one common mold. Preferred is co-injection molding. The invention further relates to the resistor device thus produced and a current limit means including the resistor device and a switch (FIG. 4).
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: August 23, 2005
    Assignee: ABB Research Ltd.
    Inventors: Ralf Strümpler, Ruzica Loitzl-Jelenic, Joachim Glatz-Reichenbach