Patents Assigned to Brush Fuses, Inc.
  • Electrical fuses having improved short-circuit interruptions characteristics
    Patent number: 5148140
    Abstract: The disclosed electrical fuse has a fuse link in a filling of sand and a binder that imparts high thermal conductivity to the filler. The binder is a shiny coating on the grains of sand extending from grain to grain. It is an amorphous coating. The exemplary binder is boric oxide, B.sub.2 O.sub.3.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: September 15, 1992
    Assignee: Brush Fuses, Inc.
    Inventor: Michel Goldstein
  • Electrical fuses
    Patent number: 4893106
    Abstract: The disclosed full-range fuse provides excellent short-circuit and overload protection using various forms of fuse links, made of copper or copper alloys, or silver, including curtain fuse links, the short-circuit performance being enhanced by solidifying the sand or other granular fill with a binder, notably a silicate or boric acid, the overload interruption being enhanced by boric acid that is distributed throughout the fill.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: January 9, 1990
    Assignee: Brush Fuses Inc.
    Inventors: Michel Goldstein, Kenneth D. Howton, Larry L. Jones
  • Fuses and their manufacture
    Patent number: 4841356
    Abstract: The disclosed fuse has a tube of insulation, terminals at the ends of the tube, a link connecting the terminals, and a granular filler. At least one end cap is made of sheet metal which has one or more integrally extending tabs and a respective hole for each tab, each tab and its hole having the same size and shape. Granular fill is introduced via said hole(s) while the tab(s) are raised to provide wide openings. The end cap is sealed by driving the tab(s) into the hole(s). After the fuse contains granular filler but before driving the tab(s) into the hole(s), the fuse may be impregnated with a fluid, first adjusting the tab(s) to be narrowly open to retain the granular filler while admitting the impregnant.
    Type: Grant
    Filed: April 5, 1988
    Date of Patent: June 20, 1989
    Assignee: Brush Fuses, Inc.
    Inventors: Kenneth D. Howton, Robert G. Stewart, Herman R. Zeitler
  • Time delay electrical fuse and method of making same
    Patent number: 4727347
    Abstract: The present invention relates generally to a three chamber ferrule type fuse comprising a tube of dielectric material having a tube wall and a bore, providing a unitary sub-assembly comprising a plunger and plunger guide, and two short circuit elements, a coil spring and a ring, having the tube wall staked forming a support for the ring inserting the sub-assembly into said bore of the tube so that one end thereof rests on said ring, having the coil spring under compression, and staking the sub-assembly in place. The construction facilitates assembly by automatic machinery.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: February 23, 1988
    Assignee: Reliance Fuse, Brush Fuses Inc.
    Inventors: Dominic Cambio, Michael E. Ross, Richard Sperry