Littelfuse, Inc.

David Arthur Burns

Derek Lasini

Ganesh Nagaraj Chennakesavelu

Scott Faust

Jon Richard

Engelbert Hetzmannseder

Ganesh Nagaraj Channakesavelu

An active/passive fuse module including a fuse having an electrically insulating fuse body, first and second endcaps disposed on opposing ends of the fuse body, a fusible element extending through the fuse body between the first endcap and the second endcap, and an arc quenching material disposed within the fuse body and surrounding the fusible element. The fuse module further includes a pyrotechnic interrupter (PI) coupled to the fuse body, the PI having a housing defining a shaft, a piston disposed within the shaft, a drive pin extending from the piston into the fuse body, the drive pin terminating in a cutter disposed adjacent the fusible element, and a pyrotechnic ignitor disposed within the shaft above the piston configured to detonate upon receiving an initiation signal from a controller, whereby the piston and the drive pin are forcibly driven through the shaft causing the cutter to separate the fusible element.

Active/passive fuse module

A novel fuse assembly design utilizes a fuse body, a single-piece terminal assembly and a two-piece endbell. The terminal assembly is disposed within the fuse body and includes first and second opposing surfaces with a fuse element extending between a first terminal and a second terminal. The endbell, to be connected to the fuse body, includes first and second endbell portions. Formed within the first endbell portion is a first receptacle and extending from the first endbell portion is a first protrusion. Formed within the second endbell portion is a second receptacle and extending from the second endbell portion is a second protrusion. When the two endbell portions are fastened to one another with the terminal assembly sandwiched between them, the first protrusion engages the second receptacle and the second protrusion engages the first receptacle.

Two-piece fuse endbell with pre-cast/pre-molded alignment slots and optional interface crush ribs

A novel fuse assembly design utilizes single-piece terminal assemblies and two-piece endbells. The two-piece endbells and terminal assembly feature mating elements that enable fastening of the endbell portions to the terminal assembly without use of adhesives. The mating elements also provide positioning guidance for ease of assembly. Slots in the endbells for receipt of insertion pins enable the endbells to be pre-cast/pre-molded without costly rework of molding tools.

Growing community of inventors

Chicago, IL, United States of America

David Arthur Burns