Hollow fuse body with notched ends

Patent metadata

Field	Value
Publication number	US-10325744-B2
Application number	US-201615169887-A
Country	US
Kind code	B2
Filing date	Jun 1, 2016
Priority date	Jun 1, 2016
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

Hollow bodies and hollow body fuses are disclosed. Furthermore, methods to provide hollow bodies and hollow body fuses are disclosed. In one implementation, a hollow body includes a center portion and an end portion. An endcap may be coupled to the end portion. A cavity is formed between an inside surface of the endcap and an outer periphery of the end portion. A fusible element may be disposed within the hollow body, the fusible element may be further disposed within the cavity formed between the inside surface of the endcap and the outer periphery of the end portion, the fusible element traveling a substantially diagonal path through a center of the cavity.

First claim

We claim:

1. A fuse, comprising:
a hollow body including a center portion and a first end portion, the first end portion narrower than the center portion;
a first endcap coupled to the first end portion, a cavity formed between an inside surface of the first endcap and an outer periphery of the first end portion, the outer periphery of the first end portion comprising:
a shoulder surface extending perpendicularly from an outer surface of the center portion of the hollow body;
an end portion outer surface extending perpendicularly from the shoulder surface, the end portion outer surface extending parallel to the outer surface of the center portion of the hollow body; and
an endmost surface extending perpendicularly from the end portion outer surface;

a fusible element disposed within the hollow body, the fusible element further disposed within the cavity formed between the inside surface of the first endcap and the outer periphery of the first end portion, wherein the fusible element extends diagonally between the outer surface of the center portion of the hollow body and the endmost surface of the first end portion so the fusible element is not in direct contact with the shoulder surface or the end portion outer surface of the first end portion; and
solder disposed in the cavity, the solder surrounding the fusible element disposed within the cavity with the solder disposed between the fusible element and the inside surface of the first endcap and between the fusible element and the end portion outer surface of the outer periphery of the first end portion such that the solder is sandwiched between the fusible element and the end portion outer surface of the outer periphery of the first end portion.

2. The fuse according to claim 1 , wherein the fusible element extends along a substantially diagonal path through a center of the cavity.

3. The fuse according to claim 1 , wherein the fusible element is sandwiched between a portion of the inside surface of the first endcap and a portion of an outer periphery of the center portion.

4. The fuse according to claim 1 , wherein the fusible element is offset from the outer periphery of the first end portion.

5. The fuse according to claim 4 , wherein the fusible element is offset from the inside surface of the first endcap.

6. The fuse according to claim 1 , wherein the fusible element is offset from the outer periphery of the first end portion and further offset from the inside surface of the first endcap.

7. The fuse according to claim 1 , wherein the hollow body includes a second end portion, the second end portion narrower than the center portion, and further comprising a second endcap coupled to the second end portion, another cavity formed between an inside surface of the second endcap and an outer periphery of the second end portion.

8. The fuse according to claim 7 , wherein the fusible element extends along a substantially diagonal path through a center of the another cavity.

9. The fuse according to claim 8 , further comprising solder disposed in the another cavity, the solder surrounding the fusible element disposed within the another cavity.

10. The fuse according to claim 7 , wherein the fusible element is offset from the outer periphery of the second end portion.

11. The fuse according to claim 7 , wherein the fusible element is offset from the inside surface of the second endcap.

12. The fuse according to claim 1 , further comprising metal disposed on the first end portion.

13. The fuse according to claim 1 , further comprising at least one notch formed on the first end portion.

14. The fuse according to claim 1 , further comprising a ledge formed on the first end portion.

15. A fuse, comprising:
a hollow body including a center portion and a first end portion;
a first endcap coupled to the first end portion, a cavity formed between an inside surface of the first endcap and an outer periphery of the first end portion, the outer periphery of the first end portion comprising:
a shoulder surface extending perpendicularly from an outer surface of the center portion of the hollow body;
an end portion outer surface extending perpendicularly from the shoulder surface, the end portion outer surface extending parallel to the outer surface of the center portion of the hollow body; and
an endmost surface extending perpendicularly from the end portion outer surface;

a fusible element disposed within the hollow body, the fusible element further disposed within the cavity formed between the inside surface of the first endcap and the outer periphery of the first end portion, the fusible element extending along a substantially diagonal path through a center of the cavity, wherein the fusible element extends diagonally between the outer surface of the center portion of the hollow body and the endmost surface of the first end portion so the fusible element is not in direct contact with the shoulder surface or the end portion outer surface of the first end portion; and
solder disposed in the cavity between the fusible element and the inside surface of the first endcap and between the fusible element and the end portion outer surface of the outer periphery of the first end portion such that the solder is sandwiched between the fusible element and the end portion outer surface of the outer periphery of the first end portion.

16. The fuse according to claim 15 , further comprising a second endcap coupled to a second end portion of the hollow body, and another cavity formed between an inside surface of the second endcap and an outer periphery of the second end portion.

17. The fuse according to claim 16 , wherein the fusible element is further disposed within the another cavity, the fusible element traveling substantially diagonal path through a center of the another cavity.

18. The fuse according to claim 17 , further comprising solder disposed within the another cavity.

19. The fuse according to claim 15 , further comprising at least one notch formed on the first end portion.

20. The fuse according to claim 15 , further comprising a ledge formed on the first end portion.

Assignees

• Littelfuse Inc

Inventors

• Bruan Ped Peterson
• Miranda Grace
• De Leon Conrado

Classifications

• H01H85/0458

  with ferrule type end contacts · CPC title

• H01H85/157

  Ferrule-end contacts · CPC title

• H01H85/175 Primary

  characterised by the casing shape or form · CPC title

• H01H85/143 Primary

  Electrical contacts; Fastening fusible members to such contacts · CPC title