Patent ID: 6556119
Filing Date: 2003-04-29
Classification: B23D,H01H

Abstract:
A fuse device for isolating an electric circuit from high current intensities, the fuse device comprising:a housing defining a chamber; at least one electric conductor element extending in the housing; and, an isolating area connected to the at least one electric conductor and forming a severable electric circuit in such manner that a severable current path runs in series via the isolating area and through the at least one conductor element; activatable means, provided in the housing for generating a triggering pressure, which selectively acts upon the isolating area to sever at least a portion of the isolating area after selective activation of the activatable means, the isolating area being thereafter at least a one of totally broken out and a cross-section of the isolating area being reduced, the actuatable means being a memory material disposed in said chamber, the memory material being selectively activated to attain a memorized shape for movement toward said isolating area in response to a temperature greater than a selected threshold temperature and being supported relative to said housing in response to a temperature lower than said threshold temperature.