Patents by Inventor Robert Kulka

Robert Kulka 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).

  • Thermal protector/resistor combination
    Patent number: 4963797
    Abstract: A ballast assembly has a thermal circuit protector with a resistor mounted in close proximity, for protecting multiple coils in a ballast assembly. The thermal circuit protector is included in the assembly, connected in series with a first coil. The resistor is connected in series with a second coil, with the resistor sized to produce sufficient heat during a high current draw condition to actuate a bimetallic switch within the adjacent protector, thereby interrupting power to the ballast assembly and preventing damage without requiring a second thermal circuit protector.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: October 16, 1990
    Assignee: Magnetek Unicersal Mfg. Corp.
    Inventors: Robert Kulka, Dinesh Chandra