Electric fuse having terminal caps and blades projecting...

H - Electricity – 01 – H

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H01H 85/12 (2006.01) H01H 85/153 (2006.01) H01H 85/38 (2006.01)

Patent

CA 1152134

ELECTRIC FUSE HAVING TERMINAL CAPS AND BLADES PROJECTING THROUGH SAID CAPS ABSTRACT A blade type fuse whose blades project through the end surfaces of the caps which close the tubular casing. Thus the blade contacts project from the outside of the casing into the inside thereof. There are a plurality of fusible elements inside the casing, all having sub- stantially the same resistance. Some of the fusible elements inside the casing that interconnect the afore- mentioned blade contacts have a relatively small spacing from the plane defined by the pair of blade contacts. Others of the fusible elements that interconnect the aforementioned blade contacts have a relatively large spacing from the plane defined by the pair of blade contacts. All fusible elements are approximately equally distributed across the cross-section of the casing. This involves for some of the fusible elements a rela- tively large, and for others of the fusible elements a relatively small, spacing from the plane of the blade contacts to which their ends are attached. To compen- sate for this difference in spacing the resistance of the connector means is approximately inversely propor- tional to the spacing of the fusible elements from the plane defined by the pair of blade contacts. Thus the resistance of all fusible elements is equalized, irres- pective of their position across the cross-section of the casing of the fuse.

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