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Printed circuit fuse assembly

  • US 4,394,639 A
  • Filed: 05/28/1981
  • Issued: 07/19/1983
  • Est. Priority Date: 12/18/1978
  • Status: Expired due to Fees
First Claim
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1. In an electrical device having a printed circuit board including a plurality of electrical components, such as a resistor, capacitor, integrated circuit, or the like, which are combined to form a printed circuit, an improved fuse assembly comprising:

  • a conventional fuse having a predetermined current rating electrically connected to said printed circuit;

    a thin printed fuse element having a predetermined fuse rating higher than said rating of said conventional fuse formed integral with said printed circuit and connected in series with said conventional fuse; and

    said thin fuse element, upon burn-out, providing a permanent record on said circuit board of consumer mis-use of said electrical device caused by the bypass or improper replacement of said conventional fuse.

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