Patents by Inventor Kishor S. Daya

Kishor S. Daya 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).

  • Patent number: 5506556
    Abstract: A circuit breaker actuating mechanism has a magnetic frame and a load coil, with a magnetic pole piece which is aligned with the axis of the coil. An elongate L-shaped armature pivots on the magnetic frame and has a head which moves transversely relative to the axis of the coil towards the pole piece. The pole piece is typically circular in section, and the head of the armature has a circular recess which matches the shape of the pole piece. The head of the armature has a pair of projections which extend relatively close to the pole piece when the armature is in a retracted position, increasing the initial attractive force between the pole piece and the armature. The mechanism is relatively simple and economical to manufacture, and offers an improved pull-in force.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: April 9, 1996
    Assignee: Circuit Breaker Industries Limited
    Inventors: Walter A. Baumgartl, Jacobus L. J. Sosef, Kishor S. Daya