Patents Assigned to Ferraz S.A.
  • Patent number: 6430019
    Abstract: A voltage suppression device for suppressing voltage surges in an electrical circuit, comprised of a voltage sensitive element having a predetermined voltage rating, the voltage sensitive element increasing in temperature as voltage applied across the voltage sensitive element exceeds the voltage rating. Terminals are provided for electrically connecting the voltage sensitive element between a power line of an electrical circuit and a ground or neutral line of the electrical circuit. A normally closed, thermal switch is electrically connected in series with the voltage sensitive element between the power line and the voltage sensitive element, the thermal switch being thermally coupled to the voltage sensitive element wherein the thermal switch moves from a normally closed position to an open position to form a gap between the thermal switch and the voltage sensitive element when the temperature of the voltage sensitive element reaches a level indicating an over-voltage condition.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: August 6, 2002
    Assignee: Ferraz S.A.
    Inventors: Kenneth R. Martenson, Jerry L. Mosesian
  • Patent number: 6075434
    Abstract: A fusible element for an electrical fuse comprising a generally flat, strip-shaped body having a generally uniform cross-section; a constricted area formed in the body has a cross-section less than the cross-section of the body; an indentation formed in the body at least bordering on the constricted area; a solder coating disposed within the indentation; and a first solder stop coating on a first surface of the body that is disposed adjacent the solder coating to prevent migration of the coating along the surface.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: June 13, 2000
    Assignee: Ferraz S.A.
    Inventor: Hans-Werner Rueckling