Low resistance polymer matrix fuse apparatus and method

• US 7,436,284 B2
• Filed: 01/29/2004
• Issued: 10/14/2008
• Est. Priority Date: 01/10/2002
• Status: Expired due to Fees

• Current Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Bender, Joan Leslie Winnett, Manoukian, Daniel Minas
• Primary Examiner(s): Vortman; Anatoly
• Application Number:
  US10/767,027
• Publication Number:
  US 20040184211A1
• Time in Patent Office: 1,720 Days
• Field of Search: 337/297, 337/232, 337/227, 337/228, 337/296, 296/23
• US Class Current: 337/297
• CPC Class Codes: H01H 2085/0414 Surface mounted fuses
• CPC Class Codes: H01H 69/022 of printed circuit fuses
• CPC Class Codes: H01H 85/0047 Heating means
• CPC Class Codes: H01H 85/006 Heat reflective or insulating layer on the casing or on the fuse support
• CPC Class Codes: H01H 85/046 Fuses formed as printed circuits

Abstract

A low resistance fuse includes a polymer membrane, a fuse element layer formed on the polymer membrane, and first and second intermediate insulation layers extending on opposite sides of the fuse element layer and coupled thereto. At least one of the first and second intermediate insulation layers comprises an opening therethrough, and the polymer membrane supports the fuse element layer in the opening. A heat sink, heater elements, and arc quenching media may be used in combination with the fuse, and the fuse may be fabricated with an adhesive lamination process.

Claims

1. A low resistance fuse comprising:

a polymer membrane;

a fuse element layer formed on said polymer membrane to form a fuse-polymer layer; and

first and second intermediate insulation layers extending on opposite sides of said fuse-polymer layer and coupled thereto, at least one of said first and second intermediate insulation layers comprising an opening therethrough, said polymer membrane supporting said fuse element layer in said opening, the first intermediate insulation layer comprising at least one first slot formed into a lateral end thereof, the second intermediate insulation layer comprising at least one second slot formed into a lateral end thereof corresponding to the at least one first slot, wherein the at least one first and second slots are metallized on a vertical face thereof.

2. A low resistance fuse in accordance with claim 1 wherein said polymer membrane comprises a polyimide film.

3. A low resistance fuse in accordance with claim 1 wherein said polymer membrane comprises a liquid crystal polymer.

4. A low resistance fuse in accordance with claim 1 wherein said polymer membrane has a thickness of about 0.0005 inches or less.

5. A low resistance fuse in accordance with claim 1 further comprising an arc quenching media in said opening, said arc quenching media surrounding a portion of said fuse element layer within said opening.

6. A low resistance fuse in accordance with claim 1 wherein said fuse element layer comprises a thin film foil.

7. A low resistance fuse in accordance with claim 6 wherein said fuse element layer has a thickness between about 1 to about 20 microns.

8. A low resistance fuse in accordance with claim 6 wherein said fuse element layer has a thickness between about 3 to about 9 microns.

9. A low resistance fuse in accordance with claim 1 wherein said fuse element layer comprises first and second contact pads and at least one fusible link extending therebetween.

10. A low resistance fuse in accordance with claim 1 further comprising first and second outer insulation layers laminated to respective said first and second intermediate insulating layers.

11. A low resistance fuse in accordance with claim 10 wherein at least one of said first and second outer insulating layers and at least one of said first and second intermediate insulating layers comprise a liquid crystal polymer.

12. A low resistance fuse in accordance with claim 10 wherein at least one of said first and second outer insulating lowers and at least one of said first and second intermediate insulating layers comprise a polyimide material.

13. A low resistance fuse comprising:

a polymer membrane;

a thin foil fuse element layer formed on said polymer membrane to form a fuse-polymer layer;

first and second intermediate insulation layers extending on opposite sides of said fuse-polymer layer and coupled thereto, wherein at least one of said first and second intermediate insulation layers comprises an opening therethrough, the first intermediate insulation layer comprising at least one first slot formed into a lateral end thereof, the second intermediate insulation layer comprising at least one second slot formed into a lateral end thereof corresponding to the at least one first slot, wherein the at least one first and second slots are metallized on a vertical face thereof; and

an arc quenching media located within said opening and surrounding said fuse-polymer layer within said opening.

14. A low resistance fuse in accordance with claim 13 wherein said fuse element layer has a thickness between about 1 to about 20 microns.

15. A low resistance fuse in accordance with claim 13 wherein at least one of said first and second intermediate insulation layers comprises a polyimide material.

16. A low resistance fuse in accordance with claim 13 wherein at least one of said first and second intermediate insulation layers comprises a liquid crystal polymer.

17. A low resistance fuse comprising:

a polymer membrane;

a thin foil fuse element layer formed on said polymer membrane to form a fuse-polymer layer;

first and second intermediate insulation layers extending on opposite sides of said fuse-polymer layer and coupled thereto, wherein at least one of said first and second intermediate insulation layers comprises an opening therethrough, the first intermediate insulation layer comprising at least one first slot formed into a lateral end thereof, the second intermediate insulation layer comprising at least one second slot formed into a lateral end thereof corresponding to the at least one first slot, wherein the at least one first and second slots are metallized on a vertical face thereof;

first and second outer insulation layers laminated to said first and second intermediate insulation layers, wherein said fuse-polymer layer and said opening are configured to model an adiabatic envelope around a portion of said fuse-polymer layer in a vicinity of said opening.

18. A low resistance fuse in accordance with claim 17 wherein said thin foil fuse element layer has a thickness between about 1 to about 20 microns.

19. A low resistance fuse in accordance with claim 17 wherein the first outer insulation layer comprises at least one third slot formed into a lateral end thereof corresponding to the at least one first slot, the second outer insulation layer comprises at least one fourth slot formed into a lateral end thereof corresponding to the at least one second slot, and wherein the at least one third and fourth slots are metallized on a vertical face thereof.