High current intensity fuse device

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;
• 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 activatable means being an actuatable medium disposed in said chamber, the actuatable medium being selectably actuated to generate a triggering pressure for acting on said isolating area;
• a driving member disposed in said housing and adapted to engage said insulating area and move to at least partially sever the isolating area in response to said triggering pressure generated by said actuatable medium, the driving member being cup-shaped and defining a cup-shaped interior space;
• and,
• the fuse device including a pyrotechnical material disposed in said interior space and in intimate thermal contact with said isolating area, the pyrotechnical material being selectively actuated by said heat of the isolating area to ignite and generate said triggering pressure.

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;
• 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 activatable means being an actuatable medium disposed in said chamber, the actuatable medium being selectably actuated to generate a triggering pressure for acting on said isolating area;
• the housing including a conduit extending into said chamber and leading from an external associated fuse device;
• and,
• the actuatable medium being responsive to hot gases flowing into the housing from the conduit to ignite and generate said triggering pressure.

A fuse device for isolating an electric circuit from high current intensities, the fuse device comprising:

• housing a defining chamber;
• at least one electric conductor element extending in the housing;
• 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 activatable means being an actuatable medium disposed in said chamber, the actuatable medium being selectably actuated to generate a triggering pressure for acting on said isolating area;
• the isolating area having a selected resistance for generating heat in response to current flow in the fuse device;
• and,
• the actuatable medium being in intimate thermal contact with said isolating area, the actuatable medium being selectively activated by said heat of the isolating area to ignite and generate said triggering pressure.